СИСТЕМЫ И СПОСОБЫ ДЛЯ КАЛИБРОВКИ ОПТИЧЕСКОГО ДАТЧИКА РАССТОЯНИЯ

Группа изобретений относится к оптическим датчикам расстояния. Оптическая система для выполнения измерений расстояния содержит приемный модуль, содержащий объемную принимающую линзу, апертурный слой, включающий в себя множество воспринимающих апертур, линзовый слой, включающий в себя множество воспринимающих линз, и пиксельный слой, включающий в себя множество воспринимающих пикселов. Причем апертурный слой, линзовый слой и пиксельный слой выполнены с возможностью образования множества воспринимающих схем. Каждая воспринимающая схема в множестве воспринимающих схем определяет дискретное, неперекрывающееся поле зрения за пределами порогового расстояния в области, внешней по отношению к упомянутой оптической системе, и включает в себя воспринимающую апертуру из множества воспринимающих апертур, воспринимающую линзу из множества воспринимающих линз и воспринимающий пиксел из множества воспринимающих пикселов. Технический результат заключается в обеспечении возможности повышения отношения выходного ...

АППАРАТУРА ДЛЯ ИЗМЕРЕНИЯ РАСПРЕДЕЛЕНИЯ РАЗМЕРОВ ЧАСТИЦ И СПОСОБ ИЗМЕРЕНИЯ РАСПРЕДЕЛЕНИЯ РАЗМЕРОВ ЧАСТИЦ

Изобретение относится к аппаратуре для измерения распределения размеров частиц и способу измерения распределения размеров частиц исходного материала для доменной печи или другого аналогичного устройства. Аппаратура для измерения распределения размеров частиц исходного материала, содержащего крупные частицы и липкий порошок, налипший на крупные частицы, содержит устройство для измерения крупных частиц, выполненное с возможностью получения информации, указывающей распределение размеров крупных частиц; устройство для измерения липкого порошка, выполненное с возможностью получения информации, указывающей распределение размеров частиц липкого порошка; и вычислительное устройство, выполненное с возможностью вычисления распределения размеров частиц исходного материала, при этом вычислительное устройство содержит модуль вычисления распределения размеров крупных частиц, выполненный с возможностью вычисления распределения размеров крупных частиц на основе информации, указывающей распределение размеров ...

УСТРОЙСТВО И СПОСОБ ОПРЕДЕЛЕНИЯ ДЛИНЫ ПРОВОДА

Изобретение относится к способу определения длины по меньшей мере одного электрического провода, к устройству определения длины по меньшей мере одного электрического провода и к электрическому проводу с маркировкой. Разработан способ определения длины провода, содержащий следующие этапы: определение (S3) длины (l1) первого электрического провода (L1), определение (S4) идентификатора первого электрического провода (L1), определение (S5) длины (l2) второго электрического провода, предназначенного для установки в электрическом монтажном устройстве, на основе длины (l1) первого электрического провода (L1) и исходной длины (l0), определенной посредством идентификатора, причем исходная длина (I0) соответствует проводу L0, причем первый электрический провод (L1) и второй электрический провод (L2) образованы путем нарезания провода (L0) по длине, причем второй электрический провод (L2) сформирован частично предварительно конфигурированным. Техническим результатом является облегчение конфигурирования ...

СИСТЕМЫ ИЗМЕРЕНИЯ РАССТОЯНИЯ ДО ПРЕПЯТСТВИЯ ПРИ ПОМОЩИ ОПТИЧЕСКОГО ПОТОКА

Verfahren zum Ermitteln der Position eines Objekts

Die Erfindung betrifft ein Verfahren zum Ermitteln der Position oder der Lage eines Objekts (11) mittels eines Lichtschnitt-Sensors (8), welcher ein Licht (16) aussendet, welches eine Lichtlinie (15) auf einer Oberfläche erzeugt. Es wird eine Suchfahrt durch automatisches Bewegen des Lichtschnitt-Sensors (8) mit einer Bewegungskomponente rechtwinklig zur Lichtlinie (15) und rechtwinklig zur Austrittsrichtung des Lichts (16) mittels einer Bewegungsvorrichtung durchgeführt. Während der Suchfahrt werden Bilddaten mittels des Lichtschnitt-Sensors (8) aufgenommen. Die Bilddaten werden ausgewertet und aufgrund der ausgewerteten Bilddaten wird eine markante Stelle, insbesondere eine Außenkante (17) des Objekts (11) erkannt. Die Position oder die Lage des Objekts (8) wird aufgrund der Position des Lichtschnitt-Sensors (8), die der markanten Stelle des Objekts (8) zugeordnet ist, und aufgrund eines Auswertens der der markanten Stelle des Objekts (8) zugeordneten Bilddaten ermittelt.

Optisches Messverfahren und optische Messvorrichtung zum Erfassen einer Oberflächentopographie

Optisches Messverfahren zum Erfassen einer Oberflächentopographie (1) eines Messobjektes (2), das folgende Verfahrensschritte aufweist; Bereitstellen einer Messvorrichtung (3) mit einem Messkopf (4) in einer Messkopfführungsvorrichtung (5) für eine chromatisch-konfokale Erfassung der Oberflächentopographie (1); Aufbringen von spektral breitbandigem Licht einer Lichtquelle (6) aus einem Faserarray (7) mit i Fasern (8) von i Messkanälen (9) über eine gemeinsame Messkopfoptik (10) unter Ausbilden eines Spotarrays (11) aus i Messspots (12 bis 15) auf dem Messobjekt (2); Erfassen und Digitalisieren von i Reflektionsspektren der i Messkanäle (9) und Auswerten der digitalisierten Reflektionsspektren unter Herausrechnen von systematischen Messfehlern und von Abweichungsbewegungen der Messkopfführungsvorrichtung (5), wobei weiterhin folgende Auswerteschritte zum Herausrechnen von systematischen Messfehlern und von Abweichungsbewegungen der Messkopfführungsvorrichtung (5) durchgeführt werden: Erfassen ...

Chromatischer Bereichssensor, der eine dynamische Intensitätskompensationsfunktion beinhaltet

Ein chromatisches Punktsensorsystem (CPS-System) wird bereitgestellt, das potentielle Fehler aufgrund von Intensitätsunstimmigkeiten von Eingabespektralprofilen, die auftreten, wenn eine CPS-Beleuchtungsquelle unter Verwendung unterschiedlicher Leistungspegel angetrieben wird, kompensiert. Das CPS-System beinhaltet einen optischen Stift, der einen konfokalen optischen Weg umfasst, der ein chromatisch-dispersives Element beinhaltet und dazu konfiguriert ist, unterschiedliche Wellenlängen in unterschiedlichen Abständen nahe einer zu messenden Werkstückoberfläche zu fokussieren, eine Beleuchtungsquelle und eine CPS-Elektronik. Die CPS-Elektronik beinhaltet Folgendes: einen Beleuchtungsquellensteuerteil, der dazu konfiguriert ist, die Beleuchtungsquelle unter Verwendung unterschiedlicher Leistungspegel anzutreiben; einen CPS-Wellenlängendetektor, der mehrere Pixel umfasst, die entlang einer Messachse des CPS-Wellenlängendetektors verteilt sind, um Ausgabespektralprofildaten bereitzustellen; ...

Optische Abstandsmessmethode und Vorrichtung

Sonde für eine Sublanze mit Entfernungsmesser

Sonde für eine eine Lanzenachse (5) aufweisende Sublanze (2) eines Konvertergefäßes (3), wobei die Sonde mit der Sublanze (2) verbindbar ist, insbesondere auf die Sublanze (2) aufsteckbar ist, dadurch gekennzeichnet, dass die Sonde einen Entfernungsmesser (8) aufweist, mittels dessen bei mit der Sublanze (2) verbundener Sonde zumindest die Entfernung (S, S') zu einem Ort (P, P') erfassbar ist, der sich in Richtung der Lanzenachse (5) gesehen vor der Sublanze (2) befindet.

Optischer Sensor

Optischer Sensor (1) zur Erfassung von Objekten in einem Überwachungsbereich, mit wenigstens einem Lichtstrahlen (4) empfangenden und/oder emittierenden optoelektronischen Bauelement, welchem wenigstens ein optisches Element in Form einer Klebstoff-Linse (10, 11, 12) zugeordnet ist, welche aus einem in einem Dispens-Prozess hergestellten, einkomponentigen, transparenten Klebstoff besteht, welcher mittels UV-Licht oder sichtbarem Licht ausgehärtet ist.

Messverfahren und Messanordnung zur Ermittlung der Position und/oder der Orientierung eines optischen Elements sowie Projektionsbelichtungsanlage

Die Erfindung betrifft ein Messverfahren zur Ermittlung der Position und/oder Orientierung eines optischen Elements (2) mit wenigstens einer Sensoreinrichtung (9), aufweisend einen von dem optischen Element (2) beabstandet angeordneten Sensor (12) und ein dem Sensor (12) zugeordnetes, mittels einer stoffschlüssigen Verbindung (8) an dem optischen Element (2) befestigtes Messtarget (7), wobei der Sensor (12) und das Messtarget (7) derart aufeinander ausgerichtet sind, dass zur Erfassung einer Ist-Distanz (LIST) zwischen dem Sensor (12) und dem Messtarget (7) eine Funktionsfläche des Messtargets (7) einen Messstrahl des Sensors (12) optisch reflektiert, wobei:a) die wenigstens eine Sensoreinrichtung (9), ein die Ist-Distanz (LIST) zwischen dem Sensor (12) und dem Messtarget (7) charakterisierendes Messsignal ausgibt, wobeib) die Position und/oder Orientierung des optischen Elements (2) anhand des Messsignals bestimmt wird, wobeic) ein Maß (T) für eine Ist-Temperatur des Messtargets (7) und ...

Handgehaltenes Laserentfernungsmessgerät

Handgehaltenes Laserentfernungsmessgerät (10) mit einer Laserentfernungsmesseinheit zum berührungslosen Messen einer Entfernung zu einem Zielobjekt (18) unter Aussendung eines Laserstrahls (18) entlang einer Entfernungsmessrichtung (24), gekennzeichnet durch einen in Entfernungsmessrichtung (24) ausziehbaren und/oder ausklappbaren Stab (28, 28a), wobei der ausziehbare oder ausklappbare Stab (28, 28a) an einem ersten, dem Laserentfernungsmessgerät (10) abgewandten, Ende eine Zieltafel (30) aufweist, auf die der Laserstrahl (18) auftrifft.

Medicine pack accompanying leaflet checking device

The checking device verifies the presence of a leaflet (30) in each medicine pack (16) using an IR beam directed onto the latter and detection of the reflected IR radiation by a sensor (26), to provide an IR distance measurement. The output signal pulses are fed to an evaluation circuit (38) in conjunction with interrogation pulses (48) from a clock source (46).Pref. the interrogation pulses are provided by a mechanical or an electronic clock source. The checked pack is only passed when the output signal pulse and the interrogation pulse have the same polarity.

Optisches Verschiebungsmessgerät, optisches Verschiebungsmessgerät-Einstellverfahren, optisches Verschiebungsmessverfahren und entsprechendes Computerprogrammprodukt

Bereitgestellt werden ein optisches Verschiebungsmessgerät, das in der Lage ist, einen Ausgangssignalbereich in Bezug auf einen Bereich zu vergrößern, in dem eine Lichtempfangsmenge gemessen werden muss, ein Verfahren zum Einstellen eines optischen Verschiebungsmessgeräts und ein optisches Verschiebungsmessverfahren.Das optische Verschiebungsmessgerät enthält ein Lichtempfangselement, bei dem ein Maximalwert Vx eines Ausgangssignals in Bezug auf einen Grenzwert Ua festgelegt ist, der ein Maximalwert eines Bereichs ist, in dem die Lichtempfangsmenge gemessen werden muss. Der gesamte Bereich des Ausgangssignals V des Lichtempfangselements kann dem gültigen Bereich Aa zugwiesen sein, welcher der Bereich ist, in dem die Lichtempfangsmenge mit einem optischen Verschiebungsmessgerät gemessen werden muss, und das optische Verschiebungsmessgerät kann einen vergrößerten Ausgangssignalbereich in Bezug auf den Bereich aufweisen, in dem die Lichtempfangsmenge gemessen werden muss.

Optischer Abstandssensor

Optischer Abstandssensor, bestehend aus einer Lichtquelle (1), einem einzigen Projektionsgitter (2; 12; 22) mit einer definierten Gitterperiode (T1), einer periodischen Detektoranordnung (3; 13; 23) sowie einer Auswerteeinheit (4), wobei- die Lichtquelle (1) das Projektionsgitter (2; 12; 22) divergent bestrahlt und- in der Ebene der Detektoranordnung (3; 13; 23) ohne Zwischenschaltung einer Abbildungsoptik ein periodisches Streifenmuster mit einer definierten Streifenmusterperiode (VP) resultiert und- die Auswerteeinheit (4) dazu ausgebildet ist, aus der ermittelten Streifenmusterperiode (VP) und weiteren bekannten Geometrie-Parametern (v, T1) der Messanordnung den Abstand (u) zwischen der Lichtquelle (1) und dem Projektionsgitter (2; 12; 22) zu bestimmen.

Verfahren zur berührungslosen Detektion einer Kante

Ein Verfahren zur berührungslosen Detektion einer Kante, die eine Teilfläche einer Oberfläche eines Messobjekts begrenzt, umfasst die folgenden Schritte:- Beleuchten eines Beleuchtungsbereichs mit einem elektromagnetischen Beleuchtungssignal aus einer Beleuchtungsrichtung, die mit einer Referenzrichtung einen stumpfen Beleuchtungswinkel einschließt,- Erfassen eines aus einem Erfassungsbereich in eine Erfassungsrichtung remittierten Anteils des Beleuchtungssignals als ein Messsignal, wobei die Erfassungsrichtung mit der Referenzrichtung einen Erfassungswinkel kleiner oder gleich 90° einschließt,wobei ein Schnittbereich des Erfassungsbereichs mit dem Beleuchtungsbereich einen Messbereich bildet,wobei die Referenzrichtung eine Tangente an eine durch den Messbereich verlaufenden Tastfläche ist,- Bewegen der Teilfläche des Messobjekts entlang der Tastfläche und dabei Detektieren der Kante durch Erkennen eines Abfallens des Messsignals, wenn das Beleuchtungssignal auf der Oberfläche des Messobjekts ...

Vorrichtung und Verfahren zum Bestimmen und Einstellen der Neigungslage eines Suszeptors

Die Erfindung betrifft ein Verfahren zum Ausgleichen eines Höhenschlages eines bei seiner Verwendung in einer Prozesskammer (2) eines Substratbehandlungsreaktors unter Substratbehandlungsbedingungen bei einer durch Beheizen des Suszeptors (3) mit einer Heizeinrichtung (4) erreichten erhöhten Temperatur um eine Drehachse (5) drehangetriebenen Suszeptors (3), mit einen ortsfest in einem Gehäuse (1) des Substratbehandlungsreaktors angeordneten Sensoranordnung zur Ermittlung zumindest einer zur Drehachse (5) parallelen Komponente des Abstandes zum Suszeptor (3), wobei Verstellorgane (6, 7) vorgesehen sind, um einen Neigungslage (11) einer Breitseitenfläche (3'') des Suszeptors (3) zur Drehachse zu verstellen. Erfindungsgemäß wird vorgeschlagen, dass der Abstand unter den Prozessbehandlungsbedingungen, also insbesondere bei Temperaturen über 500 °C ermittelt wird. Bei der hierzu verwendeten Vorrichtung verläuft die Messstrecke 13 der Sensoranordnung 8, 9 durch eine Heizeinrichtung 4.

Verfahren zur Identifikation und Bestimmung der Position insbesondere eines metallurgischen Gefäßes

According to the inventive method for identifying and determining the position of a metallurgical vessel for measuring its fireproof lining using electromagnetic radiation, an operator is defined in relation to a two or three dimensional structure with a known shape and size. Distance values (Rad(m,n)) and corresponding measuring angles ( DOLLAR G(f)(n)), theta (m)) are determined in the area of the structure and the measured distance value (Rad(m,n)) and corresponding measuring angles ( phi (n)), theta (m)) are used to scale the operator. The dimension and resolution of the operator (i:[-imax, imax, DELTA i];: [-jmax, jmax, DELTA i]) in the image co-ordinates system and the anticipated values of the operator (R(m+j,n+j)) are adapted to the measured polar co-ordinates (Rad(m,n), phi (m), theta (n)). A result value (S(m,n)) is then formed from the differences between the anticipated values of the operator (R(m+i,n+j)) and the measured values (Rad(m+i,n+j)) and the location of the structure ...

Device for measuring the wall thickness of a pipe in a rolling mill has lamp emitting a bundled light and fixed to different sites on a measuring head

Device for measuring the wall thickness (D) of a pipe (1) in a rolling mill comprises a laser ultrasound measuring unit having a measuring head (2) containing an exciting laser, an illuminating laser and a collecting lens for collecting light scattered from the pipe surface into the head. Lamps (6, 7, 8) emitting a bundled light and fixed to different sites on the head are also included.

Method for measuring distance of light reflective surface involves formation of derivative in addition to measuring signal, which is evaluated for determination of distance together with measuring signal

The method involves the formation of a derivative in addition to a measuring signal, which is evaluated for the determination of a distance together with the measuring signal. The distance between the surface and the sensor is changed during the known measurement particularly constant relative speed and derivative is formed after time by the measuring signal. Independent claims are also included for the following: (A) Application of the method; and (B) Optical distance sensor with an emitter.

Verfahren zur berührungslosen, schnellen und genauen Erfassung der Oberflächengestalt von Objekten

Optischer Sensor und Verfahren zur optischen Abstands- und/oder Farbmessung

Optischer Sensor zur Abstandsmessung mit einer Beleuchtungseinheit (12), mit der Licht emittierbar ist, das unterschiedliche Wellenlängen enthält, mit einer ersten Optik (17), mit der das Licht wellenlängenabhängig in Brennpunkte in unterschiedlichem Abstand von der Optik fokussierbar und von einem Messobjekt remittiertes Licht erfassbar ist, mit Mitteln, um von der ersten Optik (17) erfasstes Licht aufzuteilen in zumindest einen ersten optischen Messstrahlengang, der das Licht so über eine Detektionsblende (28) auf einen ersten Empfänger (31) lenkt, dass mit diesem ein objektabstandsabhängiges Wellenlängenspektrum erfassbar wird, und in zumindest einen zweiten optischen Messstrahlengang, der das Licht auf einen zweiten Empfänger (35) zur Erfassung einer spektralen Reflexion lenkt, mit einer Berechnungseinheit, um Messwerte des objektabstandsabhängigen Wellenlängenspektrums mit korrespondierenden Messwerten der spektralen Reflexion zu korrigieren und aus den korrigierten Werten einen Abstandswert ...

Optical reflection sensor has display control unit that causes repeatability of measured values obtained by multiple measurements to be displayed on display device

A signal processor (3) carries out specified measurements on light reflected from a target object and received by a light receiver (6). A CPU (33) calculates repeatability of measured values obtained by multiple measurements. A display control unit causes the calculated result of repeatability to be displayed on a display device (35).

Measurement of the separation between a laser-machining tool and the surface of a workpiece being worked, using an optical measurement method that is insensitive to alignment of the laser processing head

Method in which a measurement object (25) is imaged on the surface (16) of a workpiece (17). The image (26) of the measurement object is imaged with a receiver arrangement in which the incident image of the measurement object is subjected to spatial filtering. The spatially filtered light beam is measured with at least two wavelength ranges to produce two corresponding measurement signals. The measurement signals are compared with theoretical values for the set machining head (10) to workpiece surface separation and a corresponding output signal generated. Independent claims are included for the following; (1) a distance or separation sensor; (2) a laser machining tool.

Gerät zum Lichthärten eines Dentalobjekts

Die Erfindung betrifft ein Gerät zum Bestrahlen eines Objektes, insbesondere zum Lichthärten eines Dentalobjekts, mittels einer ersten Strahlung mit mindestens einer Strahlenquelle zum Aussenden der ersten Strahlung, und mit mindestens einem Strahlensensor zum Messen einer zweiten Strahlung. Die zweite Strahlung ist die erste Strahlung, die vom Objekt reflektiert wird.

Improvements in or relating to optical scopes with measuring systems

Retroreflector probe adaptor for traking hidden points

Evaluating an input relative to a display

Turbomachine having an apparatus to measure the clearance between a rotor blade tip and a stator liner of a stator casing

Non-contact measuring apparatus

AN OPTICAL SENSOR

Sliver Thickness Sensor Associated with Roll Housing

A spinning room preparation machine has a pair of rolls 15a, 16a pressed against one another, one of which 15a rotates about an immovable axis and one of which 16a rotates about a movable axis, a non-contact spacing sensor 57 for measuring the spacing between the rolls being associated with the holding element 52, 53 of one of the holding elements, preferably the immovable roll 15a, the sensed or counterpart surface being associated with the other holding element. The holding element 52, 53 may be a rotary bearing which may be Aluminium (Al) and may be a spring loaded movable bearing. The sensor 57 may be an inductive proximity or displacement sensor, acoustic e.g. ultrasound sensor, a plunger coil and core, a laser sensor or an optical sensor using visible or infra-red (IR) light. The sensor may sense a surface of the other housing 53, or a counterpart element integrated in the other housing (figure 6). The machine may be a carding machine, draw frame, combing machine or flyer. The spacing ...

Optical displacement transducer

Apparatus and method for body characterisation

A body characterising system comprises a computing device 10, an optical imaging device 756 to capture one or more images, and a scale estimation means; the computing device comprises image processing means to identify the image of the user within the background of the one or more captured images, and the computing device is operable to estimate the scale of the image of the user from the scale estimation means, and to generate data descriptive of the user's body dependent upon to the identified image of the user and the estimated scale of the identified image of the user. The body data may be used with a networked server for selecting goods such as clothes and furniture suitable for the body data.

Coordinate measurement machines with removable accessories

A portable articulated arm coordinate measuring machine for measuring the coordinates of an object in space is provided. The AACMM includes a base and an arm having an opposed first and second ends. The arm including a plurality of connected arm segments that each includes at least one position transducer for producing a position signal. An electronic circuit receives the position signal from the at least one position transducer and provides data corresponding to a position of the measurement device. A noncontact measuring device is coupled to the first end, the device having an electromagnetic radiation transmitter and is configured to determine a distance to an object based at least in part on the speed of light in air. A processor is configured to determine the three-dimensional coordinates of a point on the object in response to receiving the position signals and the distance to the object.

Optical surface measuring apparatus and method

Cargo measurement

IMPROVEMENTS RELATING TO DETERMINATION OR MONITORING OF THE DISTANCES OF SURFACES FROM REFERENCE POSITIONS

... 1285028 Measuring the distance of a surface from a reference position FLEET ELECTRONICS Ltd 25 Sept 1969 [25 Sept 1968] 45594/68 Heading G1A [Also in Division G4] Apparatus for monitoring the distance of a surface from a reference position comprising a light source providing a light beam and a photo-electric detector having a viewing axis, the light beam being directed at the surface to form a spot of light and either the beam or the viewing axis is moved so that, at least periodically, the viewing axis of the detector passes through the spot and is detected at a point in the movement that varies according to the distance of the surface from said reference position. In an embodiment, Fig.2, the surface 11 of the contents of a package 12 is scanned by a light beam 32 produced from a fixed lamp 28 and reflected by prisms or mirrors 22, 24, mounted on a transparent disc 26 which is rotated by a synchronous electric motor 25. Two photo-cells 17, 17a observe the surface and detect the beginning ...

DETERMINING DISTANCE BETWEEN MEASURING SURFACE & REFERENCE SURFACE

Measurement carriages and systems including measurment carriages

The measurement carriage 40 is configured to run on a track comprising a pair of c-beams, for example an overhead production line conveyor. The carriage comprises a main body 42 and at least one running wheel 44 to run on an interior surface of the c-beams. At least one running wheel is a measurement wheel 48 moveably mounted to the main body. A moveable mount 62 biases the measurement wheel away from the interior surface of the c-beam with respect to the main body such that its movement on the moveable mount follows variation in distance between the opposed interior surfaces as the carriage moves along the track. The carriage further comprises a strain or load sensor to monitor movement of the measurement wheel on the biased moveable mount, and to output a signal indicative of distance between the respective opposed interior surfaces. The carriage may be coupled to laser apparatus comprising a laser emitter and receiver. The laser emitter scans a separation between the C-beams and the ...

MICROMEASURING DEVICE

SURFACE GAUGING BY REMOTE IMAGE TRACKING

... 1492694 Measuring contours photo-electrically UNITED AIRCRAFT CORP 20 Jan 1975 [12 Feb 1974] 2454/75 Heading G1A Contour gauging apparatus comprises: means for providing an intensity-modulated beam of radiation along an incident axis to form a spot on the surface of a specimen; detection means having a radiation-sensitive surface provided with a plurality of reference positions; means for directing reflected light from the spot along a collecting axis to form an image on the detection means; means responsive to the passage of the image over the reference positions to provide null signals; means for causing relative motion between the detection means and the specimen whereby the image is displaced to pass over the reference positions; and means for measuring the relative motion at successive null signals. A collimated light beam 32 intensity-modulated at 10kHz and focused along an incident axis in an X-direction, forms a spot on the surface of a specimen 30. Light reflected along a collecting ...

SPACER REGULATION

PROCEDURE AND SYSTEM FOR THE CALIBRATION OF A DEVICE FOR THE FORM MEASUREMENT OF A REFLECTING SURFACE

MEASURING DEVICE

OPTICAL SENSOR FOR THE MEASUREMENT OF THE DISTANCE AND THE INCLINATION OF A SURFACE

MESSANORDNUNG ZUM KONTINUIERLICHEN MESSEN VON WELLENFÖRMIGEN UNEBENHEITEN EINER SCHIENE

MESSANORDNUNG ZUM KONTINUIERLICHEN MESSEN VON WELLENFÖRMIGEN UNEBENHEITEN EINER SCHIENE

Method and apparatus for determining for a Timed stand-up and go test time required

Die Erfindung betrifft ein Verfahren zur Bestimmung der für einen Timed-Up-and-Go-Test benötigten Zeit sowie zur Verifikation des ermittelten Ergebnisses, - wobei ein Entfernungsmessgerät (6) vorgesehen ist, das den Abstand eines Probanden (1) laufend misst, - wobei der Proband (1) angewiesen wird, vom Stuhl (4) aufzustehen, vorwärts, insbesondere zur Wand (2), zum Hindernis oder zur Markierung zu gehen, anschließend umzukehren und sich wieder auf dem Stuhl (4) hinzusetzen und der Proband (1) diese Anweisung nach seinen Möglichkeiten ausführt, - wobei überprüft wird, ob der Proband (1) auf dem Stuhl (4) sitzt und eine Zeitnehmung gestartet wird, - wobei die Zeitnehmung gestoppt wird, wenn sich der Proband (1) wieder auf den Stuhl (4) setzt, - wobei aus den Entfernungsmesswerten ein Signal (d(t)) erstellt wird, das daraufhin untersucht wird, ob es a) in einem ersten Zeitbereich kontinuierlich ansteigt, und b) nach dem Übersteigen eines vorgegebenen Umkehrschwellenwerts (dth,u) wieder kontinuierlich ...

PROBE FOR A SUBLANCE WITH RANGEFINDER

Eine Sonde (1) für eine eine Lanzenachse (5) aufweisende Sublanze (2) eines Konvertergefäßes (3) ist in Richtung der Lanzenachse (5) auf die Sublanze (2) aufgesteckt. Die Sonde (1) weist einen Entfernungsmesser (8) auf, mittels dessen bei mit der Sublanze (2) verbundener Sonde zumindest die Entfernung (S, S’) zu einem Ort (P, P’) erfassbar ist, der sich in Richtung der Lanzenachse (5) gesehen vor der Sublanze (2) befindet. Ein Auswertesystem wird dazu verwendet, dass die Sublanze dafür herangezogen werden kann, je nach aufgesteckter Sonde, die Temperatur oder die Entfernung zu ermitteln oder aus zuwerten. Beim Aufstecken der Sonde (1) auf die Sublanze (2) erfolgt zusätzlich zur mechanischen Verbindung mit der Sublanze (2) auch eine elektrische Kontaktierung der Sonde (1) mit der Sublanze (2).

Biegewinkelmessvorrichtung für eine Biegepresse

Die Erfindung betrifft eine Biegewinkel-Messvorrichtung (1) für eine Biegepresse, wobei ein zu biegendes Blechteil (2) zwischen einem Unter- (3) und einem Oberwerkzeug (4) eines Biegewerkzeugs der Biegepresse angeordnet ist. Die Biegewinkel- Messvorrichtung (1) weist eine Beleuchtungs- (7) und Detektionsvorrichtung (8) auf, welche an einer Verschwenkvorrichtung (6) angeordnet sind, so dass die Beleuchtungs- (7) und Detektionsvorrichtung (8) in einem Normalabstand (18) zu einer Oberfläche des Blechteils (2) angeordnet ist. Die Beleuchtungsvorrichtung (7) gibt einen ersten Lichtstrahl (13) auf einen Oberflächenabschnitt (14) des Blechteils (2) ab, welcher erste Lichtstrahl (13) unter einem spitzen Einfallswinkel (15) auf die Blechoberfläche trifft. Die Detektionsvorrichtung (8) erfasst einen vom Oberflächenabschnitt (14) reflektierten Lichtstrahl (16) fasst, ferner ist die Detektionsvorrichtung (8) über ein Auswertemodul mit einer Maschinensteuerung (5) verbunden. Die Verschwenkvorrichtung ...

DEVICE FOR THE ABRASION MEASUREMENT OF THE LINING OF FIREPROOF OPEN.

MEASURING SYSTEM FOR THE CONTACTLESS MEASUREMENT OF THE VERTICAL AND HORIZONTAL DISTANCE BETWEEN VEHICLE AND RAIL

OBJECT ILLUSTRATION WITH SPACER COMPENSATION (SIZE OF, COLOR)

ABRASION MEASURING OF THE FIREPROOF CASING OF A METALLURGICAL CONTAINER

SPACER REGULATION

SPACER REGULATION

SPACER REGULATION

SPACER REGULATION

SPACER REGULATION

SPACER REGULATION

Infusion system with peristaltic pump

A peristaltic pump, and related system method are provided. The peristaltic pump includes a cam shaft, first and second pinch-valve cams, first and second pinch-valve cam followers, a plunger cam, a plunger-cam follower, a tube receiver, and a spring-biased plunger. The first and second pinch-valve cams are coupled to the cam shaft. The first and second pinch-valve cam followers each engage the first and second pinch-valve cams, respectively. The plunger cam is coupled to the cam shaft. The plunger-cam follower engages the plunger cam. The tube receiver is configured to receive a tube. The spring biased plunger is coupled to the plunger-cam follower such that the expansion of the plunger cam along a radial angle intersecting the plunger-cam follower as the cam shaft rotates pushes the plunger cam follower towards the plunger and thereby disengages the spring-biased plunger from the tube. A spring coupled to the spring-biased plunger biases the spring-biased plunger to apply the crushing ...

Devices and methods for measuring using augmented reality

An electronic device: displays a field of view of a camera at a first magnification and updates the displayed field of view over time based on changes detected by the camera. The field of view includes a view of a three-dimensional space. In response to a first touch input, the device adds a measurement point at a first location in the displayed field of view that corresponds to a first location in the three-dimensional space. As the camera moves, the device displays the measurement point at a location in the displayed field of view that corresponds to the first location in the three-dimensional space. In response to a second touch input corresponding to a current location of the measurement point in the displayed field of view, the device enlarges display of the displayed field of view around the measurement point from the first magnification to a second, greater magnification.

DISTANCE MEASURING DEVICE

METHOD FOR IMPROVING THE SIGNAL-TO-NOISE RATIO IN CONFOCAL MICROSCOPES WITH MULTI-PINHOLE FILTERING

Systems and methods for evaluating range sensor calibration data

In one embodiment, a method for evaluating calibration data collected by a range sensor (102) of a mobile machine (100) on a site (100) includes collecting a calibration data set (400) using the range sensor (102). The calibration data set (400) includes information indicating the locations of a plurality of points (402) on a surface of the site (104) relative to the range sensor (102). The method further includes determining an expected error score of the calibration data set (400). Finally, the method includes determining whether to use the calibration data set (400) to calibrate the range sensor based on the expected error score.

Distance measuring apparatus and shape measuring apparatus

Method and apparatus for making absolute range measurements

DISTANCE MEASURING DEVICE

Disclosed is a distance measuring apparatus, comprising a housing (1) and a laser distance measuring device (2), the laser distance measuring device (2) being arranged inside the housing (1) or on an outer surface of same. The distance measuring device combines a measuring tape with a laser rangefinder, also has the functions of short distance measurement and long distance measurement, has the characteristics of simple operation, convenient carrying, low cost, high measurement precision, etc., and is suitable for large-scale popularization and application in the fields of building construction, interior decoration, danger zone measurement, etc.

DEVICE AND METHOD FOR MEASURING DEFORMATION IN METALLIC BARS

A device (20; 30; 40) for measuring strain in an elongated metallic bar (10), the device (20; 30; 40) comprising a housing (25; 35; 45) arranged to be secured to the metallic bar (10), at least one optical sensor (15), at least one light source (16) arranged to emit light across an interior space of the housing (25; 35; 45), and a thread (17) arranged freely movable within a sheath (11) and having a proximal end (18) extending to a distal end (29; 39) of the housing (25; 35; 45) and a distal free end arranged to be attached to the metallic bar (10) at a distance from the housing (25; 35; 45) such that longitudinal deformation of the metallic bar (10) causes displacement of the proximal end (18) of the thread (17) in relation to the housing (25; 35; 45), and wherein the at least one optical sensor (15) is configured to measure the displacement of the proximal end (18) of the thread (17) by measuring light emitted from the at least one light source (16).

POWER TOOL WITH OPTICAL MEASUREMENT DEVICE AND ASSOCIATED METHODS

Various embodiments of tools with associated optical measurement devices are described. An apparatus may include a tool to be applied to a workpiece, an optical measurement device in a feed path of the tool, and a controller. The optical measurement device may generate displacement measurements indicative of displacement of the workpiece as the workpiece traverses the feed path toward the tool. The controller may generate a measurement of the workpiece based on the plurality of displacement measurements.

DISTANCE MEASUREMENT SYSTEM AND DISTANCE MEASUREMENT METHOD

The distance measurement system according to the present invention is provided with a reference member as a reference for distance measurement provided on a surface of a metal first pipe, an attachment member provided on a surface of a metal second pipe connected to the first pipe via a weld, a distance sensor attached to the attachment member for measuring the distance to the reference member, and a measurement unit for measuring the distance on the basis of an output from the distance sensor.

TRACKING METHOD AND TRACKING SYSTEM

A tracking method determines the position 53 of a location 2 marked on a wall 3 using the following steps. The marked location 2 is recorded in a first image 9 using a camera 17 of a mobile measuring station 6, which camera is oriented in a line of vision 18. The image coordinates xO, yO of a first image point (S) onto which the marked location 2 is mapped in the first image 9 are determined. A beam having at least one ray of light 40 is rotated or swivelled through at least one axis 29 of the base station 5, in emission directions 41 that change according to a prescribed procedure, to produce a migrating pattern of points of light 8 on a wall 3 of the interior. A series of images 9 of the wall 3 is recorded in the line of vision 18, with one of the migrating points of light 8 being mapped in the series onto at least one second image point P1, P2. The image coordinates x1, y1; x2, y2 of the at least one second image point P1, P2 are determined. The emission directions 41 of the rays of ...

TRACKING METHOD AND TRACKING SYSTEM

A tracking method determines the position 53 of a location 2 marked on a wall 3 using the following steps. The marked location 2 is recorded in a first image 9 using a camera 17 of a mobile measuring station 6, which camera is oriented in a line of vision 18. The image coordinates xO, yO of a first image point (S) onto which the marked location 2 is mapped in the first image 9 are determined. A beam having at least one ray of light 40 is rotated or swivelled through at least one axis 29 of the base station 5, in emission directions 41 that change according to a prescribed procedure, to produce a migrating pattern of points of light 8 on a wall 3 of the interior. A series of images 9 of the wall 3 is recorded in the line of vision 18, with one of the migrating points of light 8 being mapped in the series onto at least one second image point P1, P2. The image coordinates x1, y1; x2, y2 of the at least one second image point P1, P2 are determined. The emission directions 41 of the rays of ...

CHARACTERIZATION OF REFRACTORY LINING OF METALLURGICAL VESSELS USING AUTONOMOUS SCANNERS

Apparatuses, methods, and systems are disclosed for autonomously characterizing the refractory lining in a container using a scanner that includes a scanning laser range finding system, a control system being communicatively connected to the laser scanning system to control the scanner; and a robotic vehicle having a controller communicatively connected to the control system and a drive system to propel the scanner autonomously in an area adjacent to the container, wherein characterization of the refractory lining is performed by comparing refractory thickness values determined from the distances measured from the laser scanning system to the surface of the refractory lining and the relative position of the scanner and the container, and comparing the same to a reference measurement of the refractory lining.

METHOD TO DETERMINE LENGTH AND AREA MEASUREMENTS WITHIN A SMARTPHONE CAMERA IMAGE

A mobile communication device includes a processor operably coupled to a memory and to a wireless communication subsystem operable to send and receive data, a camera operably coupled to the processor, a sensor operably connected to provide to the processor a distance between the camera and an element viewable by the camera. Instructions are stored in the memory; when these instructions are executed by the processor, the mobile communication device takes an image with the camera, uses the sensor to determine a distance between the camera and at least one object recorded in the image, receives a request for a desired measurement comprising one of a desired length measurement and a desired area measurement of an element in the image, calculates the desired measurement, and provides the desired measurement to the user.

DETERMINING THE DISTANCE OF AN OBJECT TO AN ELECTRONIC DEVICE

Described is a method of determining a proximity of an object to an electronic device, the method comprising: determining the proximity of the object to the electronic device using a non- camera proximity sensor; and in response to the occurrence of the trigger event, determining the proximity of the object to the electronic device using a second proximity sensor.

SHAPE MEASUREMENT APPARATUS AND SHAPE MEASUREMENT METHOD

To provide a shape measurement apparatus that, in measuring the unevenness shape of a measurement object by a light-section method, enables the shape of the measurement object to be measured precisely even when the distance between the measurement object and an image capturing apparatus fluctuates. [Solution] Provided is a shape measurement apparatus including: a linear light position detection unit that detects, from a captured image of linear light applied to a measurement object by a linear light irradiation apparatus that is captured by an image capturing apparatus, a linear light position of the linear light; a distance computation unit that computes a distance from the image capturing apparatus to the measurement object, on the basis of a distance difference between a reference linear light position detected by the linear light position detection unit when the measurement object is positioned at a position of a predetermined reference distance from the image capturing apparatus and ...

METHOD AND APPARATUS FOR OBTAINING THE DISTANCE FROM AN OPTICAL MEASUREMENT INSTRUMENT TO AN OBJECT UNDER TEST

Systems and methods for measuring a distance from a reference plane of an optical measurement instrument to a reference plane of an optical device under test are disclose. In one embodiment, a system for measuring this distance includes an illumination system, an optical system, and optical sensor and a processor. The illumination system is configured or adapted to illuminate the object under test. The optical system is configured or adapted to receive light from the object under test and to produce an aberrated image. The optical sensor is configured or adapted to receive and sense the aberrated image. The processor determines the distance from the reference plane of the optical measurement instrument to the reference plane of the optical device based on an aspect of the aberrated image sensed by the optical sensor.

METHOD AND ARRANGEMENT TO MEASURE THE DEFLECTION OF A WIND-TURBINE BLADE

The invention relates to a method and arrangement to measure the deflection of a blade of a wind-turbine. The blade comprises a cavity inside the blade. A reflector, which is located inside the cavity of the blade, is coupled by a wire-less signal with a distance-measurement-device. The distance--measurement-device uses the wireless signal to measure the distance between the distance-measurement-device and the reflector. A line of sight is established and maintained between the distance-measurement-device and the reflector even when the blade is deflected. The reflector is inclined relative to the line of sight in a way, that a lateral movement of the reflector relative to the line of sight results in a change of the distance between the distance-measurement--device and the reflector, while the lateral movement is caused by an deflection of the blade. The distance--measurement-device is designed to measure the change of the distance, which is used to determine the deflection of the blade ...

PROXIMITY SENSING ON MOBILE ROBOTS

A proximity sensor (520) includes first and second components (522, 523) disposed on a sensor body (514) adjacent to one another. The first component (522, 524) is one of an emitter (522) and a receiver (524), and the second component (522a, 524a) is the other one of an emitter and a receiver, A third component (522b, 524b) is disposed adjacent the second sensor opposite the first sensor. The third component is an emitter if the first sensor is an emitter or a receiver if the first sensor is a receiver. Each component has a respective field of view (523, 525). First and second fields of view intersect, defining a first volume (VI) that detects a floor surface (10) within a first threshold distance (¾). The second and third fields of view intersect, defining a second volume (V2) that detects a floor surface within a second threshold distance (DAC).

SYSTEM AND METHOD FOR MEASURING PIPE

A system and method for measuring a pipe is provided. The system includes a frame rotatably receiving the pipe, a carriage movably positionable along the frame, a guide floatingly positionable about the carriage, at least one sensor for measuring a position of the pipe, and a measurement unit operatively linked to the sensor for collecting measurements therefrom. The guide has a mouth that receivingly engages the pipe and axially aligns therewith. The pipe is measured with the sensor(s) while moving at least one of the pipe, the carriage and the guide.

METHOD FOR FINDING DISTANCE INFORMATION FROM A LINEAR SENSOR ARRAY

A method for determining a position using digital pixel data includes receiving pixel data from a position sensor device at a controller, sorting the received pixel data into pixel banks using the controller, identifying a maximum bank, a close bank, and a far bank using the controller, calculating a close to max ratio using a first equation and a max to far ratio using a second equation using the controller, and determining a position based on said close to max ratio and said far to max ratio.

CRUSHER ROLL WEAR MONITORING APPARATUS AND METHOD

The method is used to monitor the wear undergone by a round cylindrical surface (12) of a crusher or grinder roll (14). In the method, the circumference of the roll (14) is scanned, typically by a laser beam, at various positions along the length of the roll (14) to obtain actual values for the distance of the roll surface (12) from a datum. These actual values are compared with corresponding, predetermined distance values to determine any variance between the actual distance values and the predetermined distance values.

CALIBRATABLE OPTICAL DISTANCE SENSING SYSTEM AND METHOD

A calibratable optical distance measuring system (100) and method of calibrating the same utilizes a plurality of electronic calibration constants stored in memory (118) to compensate the measurement output of a position sensitive detector element (18) for variations in physical design and circuit performance parameters. The method of calibrating includes generating the plurality of electronic calibration constants by placing the optical distance measuring system (100) into a calibration fixture (200 or 208) where at least one target object is moved into known distances, and the calibration constants are determined based on the system's measurements of the known distances.

Dispositif de contrôle des dimensions géométriques de pièces usinées, utilisées dans l'industrie horlogère

Vorrichtung zum Messen kleiner Abstände

LASER RANGE FINDER ACCORDING TO THE METHOD OF THE LAUFZEITMESSUNG.

METHOD AND DEVICE FOR DETERMINING THE POSITION OF AN OBJECT RELATIVE TO A REFERENCE.

ASTIGMATIC OPTICAL NON-CONTACT PROBE.

OPTICAL MEASURING INSTRUMENT FOR CONTACTLESS DISTANCE MEASUREMENT.

Measuring instrument for continuous measuring of wavy unevenness of a rail.

PROCEDURE FOR THE RANGING, AS WELL AS MECHANISM FOR THE EXECUTION OF THE PROCEDURE.

A method and apparatus for determining range (13) by correlating the relationship between the distance of a diffraction grating (7) from a monochromatically illuminated target surface (5) with the respective relative displacements of higher order diffraction images (12) from the position of the zero order image (11) as observed through the diffraction grating.

METHOD FOR IMAGING THE PROFILE OF A SURFACE ROUGHENED REFLECTIVE AND DEVICE FOR IMPLEMENTING SAID METHOD.

Measuring system for shaft or drainage channel condition - uses computer-controlled measuring head to scan inside surface of shaft or channel with monitor display

The measuring system uses a measuring head displaced along the shaft or drainage channel, with measurement of the relative position of points along its surface, the measuring head positioned relative to a fixed reference system via a computer-controlled device. The measuring head allows required areas of the inside surface to be displayed on a monitor screen (16) with a given magnification. The computer uses software for controlling the measuring head, for determining the measured valves, for data and image storage and for access by the uses to auxiliary functions. USE - For detecting surface deterioration of shaft or drainage channel.

Optical contactless edge detection of paper

A primary light beam is directed towards a main operating plane (H) contg. objects. Two or more detectors (D1,D2) are used to evaluate the light scattered forwards and rearwards by an illuminated surface. The angle between the rearward scattered light detected by one detector and the main operating plane is equal to or smaller than the angle between the plane and the main emitted light axis. The rearward and forward scattered light detection signals are processed to form signals which can be correlated with the edges of the objects.

Device for one or at a spinning mill preparation machine, which exhibits a drafting equipment for drawing strangförmigem synthetic material.

Bei einer Vorrichtung für eine oder an einer Spinnereivorbereitungsmaschine, die ein Streckwerk zum Verstrecken von strangförmigem Fasermaterial aufweist, insbesondere Karde, Strecke, Kämmmaschine oder Flyer, zum kontinuierlichen Ermitteln des Querschnittes resp. der Masse mindestens eines Faserbandes, mit einem Paar gegeneinander pressbarer Messwalzen (15, 16), ist eine der Walzen ortsfest und die andere davon wegbewegbar angeordnet, sowie mit einem berührungslosen Abstandssensor (57 1 ) zum Messen des Abstandes von einer Gegenfläche (Abtastfläche). Um eine einfache Anordnung des Abstandssensors, namentlich bei räumlicher Enge, zu ermöglichen und eine verbesserte Zuordnung des Abstandssensors zur Abtastfläche zu erlauben, ist der Abstandssensor (57 1 ) in das Halteelement für eine Walze (15, 16) integriert.

Device for a spinning mill preparation machine to continuous determining of the cross section respectively the mass of the fiber federation.

Eine Vorrichtung für eine Spinnereivorbereitungsmaschine, welche Spinnereivorbereitungsmaschine ein Streckwerk zum Verstrecken eines Faserverbandes aus mehreren Faserbändern aufweist, zum kontinuierlichen Ermitteln des Querschnittes respektive der Masse des Faserverbandes, umfasst ein Paar gegeneinander pressbarer Messwalzen (15, 16). Eine der Messwalzen (15) des Paars von Messwalzen ist ortsfest angeordnet und die andere Messwalze (16) des Paars von Messwalzen ist von der ortsfest angeordneten Messwalze wegbewegbar angeordnet. Die Vorrichtung umfasst ferner einen berührungslosen Abstandssensor (57 1 ) zum Messen des Abstandes einer Sensorfläche (57a) des Abstandssensors (57 1 ) von einer Gegenfläche. Der Abstandssensor (57 1 ) ist in ein Halteelement (52) für die ortsfest angeordnete Messwalze (15) oder in ein weiteres Halteelement (53) für die wegbewegbare Messwalze (16) integriert.

Device for one or at a spinning mill preparation machine, which exhibits a drafting equipment for drawing strangförmigem synthetic material.

Bei einer Vorrichtung für eine oder an einer Spinnereivorbereitungsmaschine, die ein Streckwerk zum Verstrecken von strangförmigem Fasermaterial aufweist, insbesondere Karde, Strecke, Kämmmaschine oder Flyer, zum kontinuierlichen Ermitteln des Querschnittes resp. der Masse mindestens eines Faserbandes, mit einem Paar gegeneinander pressbarer Messwalzen, ist eine der Walzen ortsfest und die andere davon wegbewegbar angeordnet, sowie mit einem berührungslosen Abstandssensor zum Messen des Abstandes von einer Gegenfläche (Abtastfläche), die dem Halteelement für die eine Walze zugeordnet ist. Um eine einfache Anordnung des Abstandssensors, namentlich bei räumlicher Enge, zu ermöglichen und eine verbesserte Zuordnung des Abstandssensors zur Abtastfläche zu erlauben, ist der Abstandssensor und die Gegenfläche auf der jeweils einander zugewandten Seite der Halteelemente angeordnet.

Distance measurement system and method

A distance measurement method comprising: projecting a light beam having a speckle pattern to at least one reference plane to show a plurality of images with the speckle pattern on the at least one reference plane. The speckle pattern has a plurality of speckles, so as to capture the image with the speckle pattern on the reference plane to obtain a plurality of reference image information. When the object enters the area illuminated by a light source module, an image with the speckle pattern on a surface of an object is captured to obtain an object image information. Then, a plurality of brightness relationships among each of the speckles with adjacent speckles rounding each speckle are computed according to the reference image and the object image information to obtain relative brightness information of each speckle, which is used to compute position of the object.

Depth sensing apparatus and method

A depth sensing apparatus is provided. The depth sensing apparatus may reset, to a reference voltage value, a voltage of each of a first floating diffusion node and a second floating diffusion node of a sensor pixel for a first time period. For a second time period, the depth sensing apparatus may control the first floating diffusion node to store a voltage of a photodiode in a first phase interval, and may control the second floating diffusion node to store the voltage of the photodiode in a second phase interval. The depth sensing apparatus may calculate a difference between the voltage of the first floating diffusion node and the voltage of the second floating diffusion node for a third time period.

Laser-based coordinate measuring device and laser-based method for measuring coordinates

A laser based coordinate measuring device measures a position of a remote target. The laser based coordinate measuring device includes a stationary portion, a rotatable portion, and at least a first optical fiber. The stationary portion has at least a first laser radiation source and at least a first optical detector, and the rotatable portion is rotatable with respect to the stationary portion. The first optical fiber system, which optically interconnects the first laser radiation source and the first optical detector with an emission end of the first optical fiber system, has the emission end disposed on the rotatable portion. The emission end emits laser radiation to the remote target and receives laser radiation reflected from the remote target with the emission direction of the laser radiation being controlled according to the rotation of the rotatable portion.

Distance measurement systems and methods

A distance measurement system comprises an optical distance sensor configured to generate a light beam, a first optical module, and a processor. The first optical module is configured to receive the light beam, and generate and selectively transmit a plurality of light beams having different light channels for projection onto one or more points of an object to generate one or more reflected light beams scattered from the respective one or more points of the object, and capture and transmit the one or more reflected light beams into the optical distance sensor to retrieve a plurality of distance data to the respective one or more points of the object. The processor is configured to process the distance data to determine position information of the respective one or more points of the object. A distance measurement method is also presented.

Machine Tool - Based, Optical Coordinate Measuring Machine Calibration Device

A calibration artifact for an inspection system is provided. The calibration artifact comprises a base adapted for placement within a holding fixture of an inspection system during calibration, a sphere operatively connected to the base, and a light source operatively connected to the base. The base, the sphere, and the light source are removable from the inspection system after calibration.

Apparatus, optical assembly, method for inspection or measurement of an object and method for manufacturing a structure

An optical assembly for a system for inspecting or measuring of an object is provided that is configured to move as a unit with a system, as the system is pointed at a target, and eliminates the need for a large scanning (pointing) mirror that is moveable relative to other parts of the system. The optical assembly comprises catadioptric optics configured to fold the optical path of the pointing beam and measurement beam that are being directed through the outlet of the system, to compress the size of the optical assembly.

Devices and methods for position determination and surface measurement

In an embodiment a method for position determination of an object ( 25 ) in a spatial area ( 28 ) is provided in which the object ( 25 ) is illuminated with at least one light beam ( 22, 27 ). The light beam ( 22, 27 ) does not cover the complete spatial area ( 28 ) and is guided into a part of the spatial area in which the object ( 25 ) is present depending on the position of the object ( 25 ). In another aspect a method for measuring a surface is provided.

Apparatus for obtaining 3-dimensional content

An apparatus for obtaining 3D content is provided. The apparatus comprises: a lighting unit for outputting a lighting pattern having coordinate information; a depth sensor for receiving a returning beam output from the lighting unit and reflected from an object; a 2D image capturing unit for obtaining a second-dimensional image; a data processor for calculating the depth of each region using the distribution of characteristics represented on an image obtained by the depth sensor, and processing the 2D image data obtained by the 2D image capturing unit and the calculated depth data and encoding the same according to a predetermined format; and a controller for controlling the lighting unit, the 2D image capturing unit, and the data processor. The lighting unit comprises a light source and an optical element comprising a plurality of sub-grid regions for modulating beams coming from the light source.

Proximity sensor calibration

The subject matter disclosed herein relates to proximity sensors to measure distance from a surface, and more particularly, calibrating proximity sensors to adjust for various reflecting surfaces.

Distance Estimation Between a Fiber End and a Tissue Using Numerical Aperture Modulation

A system and method of estimating a distance between the distal end of an optical fiber and treated tissue, to improve treatment efficiency, is provided herein. The estimation is achieved by modulating the numerical aperture of a light beam transmitted through the fiber to receive reflections from the tissue and distinguish them from other reflections in the fiber, and further by calculating the distance by comparing reflection intensities of beams having different numerical aperture values that illuminate the tissue over a very short period, so that tissue and environment conditions do not change much. Distance estimation may be carried out by modulating the treatment beam itself, or by a light beam transmitted between pulses of a pulsed

Electronic device and method for focusing and measuring points of objects

In an electronic device, an image point A on an image of an object is selected. A spectral confocal sensor is controlled to move to a position above a measuring point A′ on the object, where the measuring point A′ corresponds to the image point A, and a Z-coordinate of the measuring point A′ is computed using the spectral confocal sensor. A focal position of the measuring point A′ is computed according to the Z-coordinate of the measuring point A′, and a CCD lens is controlled to move to the focal position. The Z-coordinate of the measuring point A′ is stored into a storage unit of the electronic device.

Calibrated hardware sensors for estimating real-world distances

In some embodiments, methods and systems are provided for assisting a user in determining a real-world distance. Hardware-based sensors (e.g., present in a mobile electronic device) may allow for a fast low-power determination of distances. In one embodiment, one or more telemetry-related sensors may be incorporated into a device. For example, data detected by a frequently-calibrated integrated accelerometer may be used to determine a tilt of the device. A device height may be estimated based on empirical data or based on a time difference between a signal (e.g., a sonar signal) emitted towards the ground and a corresponding detected signal. A triangulation technique may use the estimated tilt and height to estimate other real-world distances (e.g., from the device to an endpoint or between endpoints).

Displacement sensor

A signal processing unit (C 1 , C 2 , C 3 ) for processing a light reception signal from an imaging element ( 12 ) at different magnifications is provided in a light receiving unit ( 102 ) in a displacement sensor ( 1 ). This sensor ( 1 ) measures a displacement by using light receiving amount data generated by the signal processing unit (C 1 ) for each detection processing by a light projecting unit ( 101 ) and the light receiving unit ( 102 ), and further adjusts sensitivity for next detection processing. In sensitivity adjustment processing, when a peak value in the light receiving amount data generated by the signal processing unit (C 1 ) approximates to 0, a peak value extracted by the signal processing unit (C 2 ) to which higher magnification is applied is employed. Alternatively, when a peak value in the light receiving amount data generated by the signal processing unit (C 1 ) is saturated, a peak value extracted by the signal processing unit (C 3 ) to which 1-fold magnification is applied is employed.

Evaluating an Input Relative to a Display

Disclosed embodiments relate to evaluating an input relative to a display. A processor may receive information from an optical sensor 106 and a depth sensor 108. The depth sensor 108 may sense the distance of an input from the display. The processor may evaluate an input to the display based on information from the optical sensor 106 and the depth sensor 108.

Triangulation light sensor

A triangulation light sensor includes at least one light transmitter for transmitting a light signal into a detection zone, a light receiver having a plurality of receiver elements for receiving light from the detection zone reflected diffusely and/or specularly, and a reception optics arranged between the detection zone and the light receiver in the beam path, with the position of a light spot produced on the light receiver in a triangulation direction by the reflected light resulting in dependence on the distance of the object. The reception optics includes at least one multisegmented lens element having a plurality of lens segments with mutually spaced apart optical axes in the triangulation direction and at least one freeform lens element or one diffractive-optical element having a multisegmented lens element having a plurality of lens segments with optical axes spaced apart from one another in the triangulation direction.

DISTANCE MEASURING DEVICE AND DISTANCE MEASURING METHOD

Disclosed is a distance measuring device including an imaging lens configured to condense incident light from an object, a lens array configured in such a manner that light having passed through the imaging lens is incident thereon, an imaging element array configured to receive light having passed through the lens array to output image information, and a distance calculating part configured to calculate a distance to the object based on the image information, wherein the lens array includes plural lenses with different numeric apertures. 1. A distance measuring device comprising an imaging lens configured to condense incident light from an object , a lens array configured in such a manner that light having passed through the imaging lens is incident thereon , an imaging element array configured to receive light having passed through the lens array to output image information , and a distance calculating part configured to calculate a distance to the object based on the image information , wherein the lens array includes plural lenses with different numeric apertures.2. The distance measuring device as claimed in claim 1 , wherein the plural lenses include a first lens and second lens with curvatures being mutually equal and a portion of an aperture part of the second lens is shielded in such a manner that a numerical aperture of the second lens is smaller than a numerical aperture of the first lens.3. The distance measuring device as claimed in claim 1 , wherein the plural lenses include a third lens and fourth lens with curvatures being changed to provide different numerical apertures thereof.4. The distance measuring device as claimed in claim 1 , wherein the plural lenses include a fifth lens and sixth lens with refractive indices being changed to provide different numerical apertures thereof.5. The distance measuring device as claimed in claim 1 , wherein the plural lenses include lenses with plural parameters selected from the group consisting of aperture ...

Normal-line detection method, normal-line detection device, and machine tool having normal-line detection function

A method for finding the normal vector of a measurement surface of a measurement target measures distances to the measurement target using at least one distance detector and calculates the normal vector. The normal vector is found by calculating the exterior product of a first vector which connects a first measurement point and a second measurement point and a second vector which connects a third measurement point and a fourth measurement point and is shifted in parallel such that an end thereof is set at any one of the first and second measurement points.

Information processing apparatus and information processing method

A projection pattern that includes a measurement pattern for measuring a distance to a target object, and a code pattern for identifying the measurement pattern is projected onto the target object. The target object onto which the projection pattern was projected is sensed. On the basis of a relationship between the measurement pattern and the code pattern in the sensed image, the projection pattern that is to be projected onto the target object after the projection pattern are changed, the code pattern is read out in the sensed image of the target object onto which the changed projection pattern was projected, and the measurement pattern is associated with it. Using the associated measurement pattern, a distance from the projection unit or the sensing unit to the target object is acquired.

METHOD FOR OPTICAL CABLE DISTANCE MEASUREMENT BY USING OPTICAL CABLE TRACKER AND OPTICAL CABLE TRACKER

The invention relates to a method using an optical cable tracker to measure optical cable distances and an optical cable tracker, which comprises a light source, an optical coupler, a phase modulator, a delay optical fiber, and an optical signal demodulation module. In the invention, optical cables are knocked to create disturbance. Not only can the optical cable be identified based on the corresponding interference produced by the light ray in optical cables, but also the distances from knock points to the local telecommunication terminals can be estimated. This facilitates the inspection, repair and maintenance of optical cables. 1. A method of using an optical cable tracker for optical cable distance measurement , characterized in that the method comprises the following steps:(1) providing the optical cable tracker, which comprises a light source, at least two optical couplers, a phase modulator, a delay optical fiber, and an optical signal demodulation module; said light source, a first optical coupler, said phase modulator, and a second optical coupler are sequentially connected in series; said optical signal demodulation module is connected in parallel with said light source; said delay optical fiber is connected in parallel with said phase modulator;(2) Each time an optical cable distance is to be measured, first using said light source in said optical cable tracker to supply an incident light, which will be output and connect into at least one optical fiber of the optical cable to be measured, and beating at a test point of the optical cable to produce disturbance;(3) splitting, using the first optical coupler, the incident light into two beams, one of the two teams passes through said phase modulator and the other passes through said delay optical fiber; then merging said two beams using the second optical coupler; introducing the merged beams into said optical cable to be measured; after receiving the beating disturbance, a phase changes in the at least ...

Device for distance measurement

A device for interferential distance measurement that includes a measurement reflector having a surface and a light source emitting a beam parallel to the surface. The device includes a splitter element including a splitter grating that is disposed perpendicular to the surface, wherein the splitter grating receives the beam and splits the beam into a measurement beam and a reference beam, wherein the measurement beam acts at least twice upon the measurement reflector along a path of the measurement beam. The device including a combining element, at which the measurement beam and the reference beam enter into interferential superposition to form interfering measurement and reference beams. The device further includes a detector arrangement, by way of which a scanning signal pertaining to a distance between the measurement reflector and a component of said device in a measuring direction can be generated from the interfering measurement and reference beams.

Measuring apparatus, lithography apparatus, and article manufacturing method

The measuring apparatus of the present invention is a measuring apparatus that measures a position of an object based on a first phase signal and a second phase signal which are different in phase from each other. The measuring apparatus includes a generator configured to generate a difference signal indicating a difference between a delay time of the first phase signal and a delay time of the second phase signal based on a variation amount of a phase difference between the first phase signal and the second phase signal, which corresponds to a frequency of at least one of the first phase signal and the second phase signal, and the frequency; and a regulator configured to regulate a sampling timing for at least one of the first phase signal and the second phase signal based on the difference signal.

Reference Measurement System for Rail Applications

A reference measurement system includes a rail vehicle configured to move along rails of a track. An imaging system is disposed on the rail vehicle and is configured to capture one or more images of a reference point. The system further includes a processor, which is configured to calculate a relative position between the rails and the reference point based on the image. Related methods for making reference measurements are described.

METHOD FOR ESTIMATING VOLUME

A cargo handling vehicle comprising a mast and a lifting device movable along said mast. The cargo handling vehicle comprises a range sensor located on said cargo handling vehicle at a position suitable for measuring the distance to the top of a piece of cargo. The cargo handling vehicle also comprises means for calculating a calculated height of said piece of cargo with respect based on said distance to the top of the piece of cargo, and means for calculating the estimated volume of said piece of cargo based on said known length and width and said calculated height. The cargo handling vehicle is used in a method for calculating the estimated volume of said piece of cargo. 1. A method for estimating a volume of a piece of cargo having a known width and length and a top of an unknown height , said method comprising the steps ofproviding a range sensor on a cargo handling vehicle having a lifting device,placing said piece of cargo on a surface, said surface having a predetermined measuring distance from said range sensor,directing the range sensor towards the top of said piece of cargo,measuring the distance to the top of said piece of cargo using the range sensor,calculating a calculated height of said piece of cargo with respect based on said distance,calculating the estimated volume of said piece of cargo based on said known length and width and said calculated height.2. A method according to claim 1 , wherein said distance to the top of the cargo is measured automatically when said distance has remained constant within a predetermined interval for a predetermined period of time.3. A method according to claim 2 , wherein automatic measurement is automatically initiated when the lifting device passes a predetermined threshold in the downward direction.4. A method according to wherein said distance measurement to said top of said piece of cargo is preceded by a measurement of said predetermined measuring distance to the surface in order to obtain a distance reference ...

DISTANCE MEASURING APPARATUS, VEHICLE AND METHOD OF CALIBRATION IN DISTANCE MEASURING APPARATUS

A distance measuring apparatus is installed in a thing and a distance between the thing and a measuring target varies. The distance measuring apparatus includes a plurality of imaging devices; a first distance acquisition part that acquires a first distance to the measuring target based on respective sets of image data taken by the plurality of imaging devices; a second distance acquisition part that acquires a second distance to the measuring target based on a reflected wave of an electromagnetic wave irradiated onto the measuring target; and a holding member that holds the plurality of imaging devices and the second distance acquisition part. 1. A distance measuring apparatus installed in a thing , a distance between the thing and a measuring target varying , the distance measuring apparatus comprising:a plurality of imaging devices;a first distance acquisition part that acquires a first distance to the measuring target based on sets of image data taken by the respective imaging devices;a second distance acquisition part that acquires a second distance to the measuring target based on a reflected wave of an electromagnetic wave irradiated onto the measuring target; anda holding member that holds the imaging devices and the second distance acquisition part.2. The distance measuring apparatus as claimed in claim 1 , whereinthe holding member fixes positions of respective distance measuring origins, in a distance measuring direction, of the imaging devices and the second distance acquisition part.3. The distance measuring apparatus as claimed in claim 2 , whereinthe holding member fixes a distance between the position of the distance measuring origins in the distance measuring direction of the imaging devices and the position of the distance measuring origin in the distance measuring direction of the second distance acquisition part.4. A distance measuring apparatus installed in a thing claim 2 , a distance between the thing and a measuring target varying claim 2 , ...

CONFOCAL SENSOR

Provided is a confocal sensor having a wider measuring range. A confocal sensor comprises: a light source that emits light at a plurality of wavelengths; a diffractive lens that causes a chromatic aberration with respect to the light along an optical axis and focuses the light onto an object without another intervening lens; a pinhole through which reflected light passes, the reflected light being a portion of the light that was focused onto and reflected from the object and focused by the diffractive lens ; and a measuring unit that measures the distance from the diffractive lens to the object on the basis of a wavelength of the reflected light. A distance L from the pinhole to the diffractive lens is variable. 1. A confocal sensor , comprising:a light source that emits light at a plurality of wavelengths;a diffractive lens that generates a chromatic aberration with respect to the light along an optical axis direction and converges the light on an object without another intervening lens;a pinhole through which reflected light passes, the reflected light being a portion of the light focused on and reflected by the object and converged by the diffractive lens; anda measuring unit that measures a distance from the diffractive lens to the object based on a wavelength of the reflected light,wherein a distance from the pinhole to the diffractive lens is variable.2. The confocal sensor according to claim 1 , further comprising a mechanism that continuously changes the distance from the pinhole to the diffractive lens.3. The confocal sensor according to claim 1 , wherein a plurality of types of holders for housing the diffractive lens at different positions are replaceable.4. The confocal sensor according to claim 1 , wherein the measuring unit measures the distance from the diffractive lens to the object according to a non-linear relationship between the wavelength of the reflected light and the distance from the diffractive lens to the object.6. The confocal sensor ...

Multi Functional Camera With Multiple Reflection Beam Splitter

An apparatus is described. The apparatus includes a camera comprising a beam splitter to impose different optical paths for visible light and infra red light received by the camera. The camera also includes an infra red light detector to detect the infra red light and a visible light detector to detect the visible light, wherein, the different optical paths include an optical path having more than one internal reflection within the beam splitter.

METHOD FOR DEPTH PERCEPTION BASED ON VEHICLE HEADLIGHTS ARRANGED ON BOTH SIDES

A method for depth perception based on vehicle headlights arranged on both sides of a vehicle includes projecting, by a first vehicle headlight, a first characteristic light pattern onto a projection surface and projecting, by a second vehicle headlight, a second characteristic light pattern. The method also includes capturing an image of the projection surface using an image capturing unit of the vehicle, calculating a frequency representation of the first and second characteristic light patterns in the captured image, and calculating, by evaluating frequency components in the frequency representation of the first and second characteristic light patterns, a coverage coefficient which is correlated with the degree of mutual covering of the first and second characteristic light patterns. The method further includes comparing the coverage coefficient with a coverage threshold value and displacing the first and second characteristic light patterns relative to one another if there is insufficient mutual covering. 1. A method for depth perception based on vehicle headlights arranged on both sides of a vehicle , the method comprising:projecting, by a first vehicle headlight, a first characteristic light pattern onto a projection surface and projecting, by a second vehicle headlight, a second characteristic light pattern;capturing an image of the projection surface using an image capturing unit of the vehicle;calculating a frequency representation of the first and second characteristic light patterns in the captured image;calculating, by evaluating frequency components in the frequency representation of the first and second characteristic light patterns, a coverage coefficient which is correlated with the degree of mutual covering of the first and second characteristic light patterns;comparing the coverage coefficient with a coverage threshold value; anddisplacing the first and second characteristic light patterns relative to one another if the comparing shows that there ...

DISTANCE IMAGE ACQUISITION APPARATUS AND DISTANCE IMAGE ACQUISITION METHOD

The distance image acquisition apparatus () includes a projection unit () which projects a first pattern of structured light distributed in a two-dimensional manner with respect to a subject within a distance measurement region, a light modulation unit () which spatially modulates the first pattern projected from the projection unit (), an imaging unit () which is provided in parallel with and apart from the projection unit () by a baseline length, and captures an image including the first pattern reflected from the subject within the distance measurement region, a pattern extraction unit (A) which extracts the first pattern spatially modulated by the light modulation unit () from the image captured by the imaging unit (), and a distance image acquisition unit (B) which acquires a distance image indicating a distance of the subject within the distance measurement region based on the first pattern. 1. A distance image acquisition apparatus comprising:a projection unit which projects a first pattern of structured light distributed in a two-dimensional manner with respect to a subject within a distance measurement region;a light modulation unit which spatially modulates the first pattern projected from the projection unit;an imaging unit which is provided in parallel with and apart from the projection unit by a baseline length, and captures an image including the first pattern reflected from the subject within the distance measurement region;a pattern extraction unit which extracts the first pattern spatially modulated by the light modulation unit from the image captured by the imaging unit;a distance image acquisition unit which acquires a distance image indicating a distance of the subject within the distance measurement region based on the first pattern extracted by the pattern extraction unit,wherein the light modulation unit is a digital micromirror device which has a micromirror group, into which the first pattern projected from the projection unit enters, and ...

OBJECT POSITION INDEPENDENT METHOD TO MEASURE THE THICKNESS OF COATINGS DEPOSITED ON CURVED OBJECTS MOVING AT HIGH RATES

Methods and apparatus for measuring a thickness of a coating on an moving object are provided. Light is directed toward the object at a predetermined location on the object such that a portion of the light interacts with the object. A I D and/or 2D maximum intensities for at least one wavelength channel is captured that is produced by the portion of the light interacting with the object. A measured average intensity of the wavelength channel and/or intensities and their arithmetic derivatives of multi wavelength channel geometries is converted into I D (averaged) and/or 2D thickness values. Based on these values an acceptability of the coating is evaluated and thickness calculated. 1. An apparatus for measuring distance to object independent thickness of a coating on an object , the apparatus comprising:at least one light source configured to direct light toward the object at a predetermined location on the object, a portion of the light interacting with the object;a wavelength detector configured to capture an intensity signal comprising at least one channel produced by the portion of the light interacting with the object; and determine intensities of light of the at least one channel based on an average maximum peak intensity captured by each channel of the at least one channel; and', 'determine at least one of the thickness or an acceptability of the coating on the object based on the determined intensities., 'a measurement device coupled to the wavelength detector configured to2. An apparatus for measuring thickness of a coating on an object comprising:at least one light source directed at an object;a multi-wavelength detector comprising of at least 2 wavelength channels configured to receive a portion of the light reflected by or transmitted through a surface of the object; anda measurement device coupled to the wavelength detector, the measurement device configured to determine the thickness of the coating based on arithmetic manipulations of the maximum ...

OPTICAL DISTANCE MEASUREMENT DEVICE AND PROCESSING DEVICE

The optical distance measurement device is configured in such a manner that the frequency-swept light output unit outputs frequency-swept light during a time period from when frequency sweeping of frequency-swept light being output is completed to when the next frequency sweeping becomes possible, the frequency-swept light output during the time period being frequency swept at a different frequency from the frequency-swept light being output. 1. An optical distance measurement device comprising:processing circuitryto repeatedly output frequency-swept light, a frequency of which changes with time;to output, as reference light, the frequency-swept light, and to irradiate a measurement target with the frequency-swept light to receive, as reflected light, frequency-swept light reflected by the measurement target;to cause the reflected light and the reference light to interfere with each other, and to output interference light between the reflected light and the reference light; andto calculate a difference between a frequency of the reflected light and a frequency of the reference light on a basis of the interference light, and to calculate, from the difference, a distance to the measurement target, whereinthe processing circuitry outputs frequency-swept light during a time period from when frequency sweeping of frequency-swept light being output is completed to when the next frequency sweeping becomes possible, the frequency-swept light output during the time period being frequency swept at a different frequency from the frequency-swept light being output.2. The optical distance measurement device according to claim 1 , whereinthe processing circuitry includesa sweep electric signal output circuit to output a sweep electric signal, a frequency of which changes with time,a delay circuit to delay the sweep electric signal output from the sweep electric signal output circuit,a first laser light source to repeatedly output first frequency-swept light, a frequency of which ...

METHOD FOR CAPTURING AND COMPENSATING AMBIENT EFFECTS IN A MEASURING MICROSCOPE

The invention relates to a method for capturing and compensating the influence of ambient conditions on an imaging scale (S) in a measuring microscope. Here, a modification of the optical properties in the measuring microscope that is caused by a change in the ambient conditions is measured by use of a reference measurement system, in particular an etalon, and, at the same time, an image of a reference structure with at least one reference length (L) that is situated on a calibration mask is produced by use of a detector of the measuring microscope and a change (ΔL) of the reference length (L) that is caused by the change in the ambient conditions is determined in the image of the reference structure. Subsequently, a correlation is established between the modification of the optical properties of the reference measurement system and the length change (ΔL) in the image, produced in the detector, of the reference structure of the calibration mask. This correlation can be used to carry out a computational adaptation of the size of picture elements of the detector and thus compensate the influence of ambient conditions on the imaging scale (S) of the measuring microscope. 1. A method for capturing the influence of ambient conditions on an imaging scale in a measuring microscope of a mask inspection system or a wafer inspection system ,wherein a modification of the optical properties in the measuring microscope that is caused by a change in the ambient conditions is measured by use of a reference measurement system,wherein an image of a reference structure with at least one reference length that is situated on a calibration mask is produced by use of a detector of the measuring microscope,wherein a change in the reference length that is caused by the change in the ambient conditions is determined in the image of the reference structure by use of at least one processor in the mask inspection system or the wafer inspection system, andwherein a correlation is established ...

ABRASION INSPECTION APPARATUS, ABRASION INSPECTION METHOD, AND PROGRAM

An abrasion inspection apparatus includes: a first imaging unit that is installed on a side of a track, a vehicle traveling along the track, a guide wheel being installed on a side of the vehicle, the first imaging unit imaging an inside of the track via a telecentric lens; a second imaging unit that is installed in a vehicle traveling direction with respect to the first imaging unit on the side of the track and images the inside of the track via a telecentric lens; an image acquisition unit that acquires an image which is an image of a boundary of the guide wheel captured by the first imaging unit and is an image of a boundary on a first direction side in the vehicle traveling direction and an image which is an image of the boundary of the guide wheel captured by the second imaging unit at the same time as the capturing of the image by the first imaging unit and is an image of a boundary on an opposite side to the first direction side; and a guide wheel detection unit that detects an abrasion situation of the guide wheel according to a position of a boundary indicated in the images acquired by the image acquisition unit. 1. An abrasion inspection apparatus comprising:a distance measurement unit that is installed in a hole, the hole being formed in a road surface, the hole being located at a position over which a traveling tire of a vehicle passes, a width of the hole being narrower than a width of the traveling tire, the distance measurement unit measuring a distance between the distance measurement unit and the traveling tire that is located above the distance measurement unit; anda tire abrasion situation detection unit that detects an abrasion situation of the traveling tire according to the measured distance.2. The abrasion inspection apparatus according to claim 1 , wherein the distance measurement unit radiates a laser beam to the traveling tire that is located above the distance measurement unit and is away from the distance measurement unit in a vehicle ...

DUAL LASER MEASURING DEVICE AND ONLINE ORDERING SYSTEM USING THE SAME

A laser measurer comprising a housing defining a direction along which a linear measurement is to be made; first and second lasers within said housing for generating two laser beams emanating from said housing in opposite or opposing directions along said measurement direction; level compensation within said housing; and an app for performing computations to provide linear, surface and volume data. 1. A laser measurer comprising a housing defining a direction along which a linear measurement is to be made; first and second lasers within said housing for generating two laser beams emanating from said housing in opposite or opposing directions along said measurement direction; level compensation within said housing; and an app for performing computations to provide linear , surface and volume data.2. A laser measurer accessory for a mobile phone comprising a housing defining a measurement direction along which a linear measurement is to be made; first and second lasers within said housing for generating two laser beams emanating from said housing in opposite or opposing directions along said measurement direction; means for coupling measured data to a mobile phone; and an app within said mobile phone for performing computations to provide linear , surface and volume data and for enabling a user to determine material required for a project.3. A system for determining and ordering materials required for a project comprising a mobile phone with a processor and level detector; a dual laser beam measurer coupled to said mobile phone; an app residing in said mobile phone for utilizing data received from said measurer to compute linear dimensions , surfaces and volumes and enabling a user to select type and quantities of materials on the basis of at least one of said linear dimensions , surfaces and volumes; and means for transmitting the selected materials and quantities over Wi-Fi or cellular network to a retailer for completing an order for shipment and/or pickup. This ...

THREE-DIMENSIONAL DISTANCE MEASURING METHOD AND DEVICE

The present disclosure provides a three-dimensional distance measuring method and device. The three-dimensional distance measuring method includes: emitting a first light pulse to illuminate a scene, and acquiring a first image of the scene within a first exposure time; emitting a second light pulse to illuminate the scene, and acquiring a second image of the scene within a second exposure time; acquiring scene distance information of the scene based on the first image of the scene and the second image of the scene, wherein the ratio of the first pulse envelope of the first light pulse to the second pulse envelope of the second light pulse is a monotonic function of time. 1. A three-dimensional distance measurement method , comprising:emitting a first light pulse to illuminate a scene, and acquiring a first image of the scene within a first exposure time;emitting a second light pulse to illuminate the scene, and acquiring a second image of the scene within a second exposure time;acquiring scene distance information of the scene based on the first image of the scene and the second image of the scene,wherein the ratio of the first pulse envelope of the first light pulse to the second pulse envelope of the second light pulse is a monotonic function of time.2. The three-dimensional distance measuring method according to claim 1 , further comprising:controlling the first exposure time so that during the first exposure time all light pulses returned from the objects in the scene are non-zero at any moment of the first exposure time; andcontrolling the second exposure time so that during the second exposure time all light pulses returned from the objects in the scene are non-zero at any moment between the second exposure start time and a specific moment before the end of the second exposure, and all are zero after the specific moment.3. The three-dimensional distance measuring method according to claim 1 , further comprising:either before the emission of the first light ...

DUAL LASER DISTANCE MEASURER WITH MIDPOINT LOCATING FEATURE

An apparatus and method for locating a midpoint between surfaces is disclosed herein. A laser distance measurer includes a housing having a top surface, a bottom surface, and first and second side surfaces intersecting the top and bottom surfaces, a first laser and a first sensor disposed along the first side surface, and a second laser and a second sensor disposed along the second side surface. The laser distance measurer includes a processor disposed in the housing configured to determine a first distance from the laser distance measurer to the first surface, determine a second distance from the laser distance measurer to the second surface, and indicate a position of the laser distance measurer relative to the midpoint between the first and second surfaces based on the first and second distances. 1. A laser distance measurer for locating a midpoint between a first surface and a second surface opposite the first surface , the laser distance measurer comprising:a housing having a top surface, a bottom surface, and first and second side surfaces intersecting the top and bottom surfaces;a first laser disposed along the first side surface for emitting a first laser beam in a first direction;a first sensor disposed along the first side surface for receiving laser light reflected from the first surface;a second laser disposed along the second side surface for emitting a second laser beam in a second direction opposite the first direction;a second sensor disposed along the second side surface for receiving laser light reflected from the second surface; and determine a first distance from the laser distance measurer to the first surface and a second distance from the laser distance measurer to the second surface; and', 'indicate a position of the laser distance measurer relative to the midpoint between the first and second surfaces based on the first and second distances., 'a processor disposed in the housing, the processor being configured to2. The laser distance ...

OPTICAL DISTANCE SENSING USING A TARGET SURFACE HAVING A NON-UNIFORM DESIGN OF REGIONS OF DIFFERENT REFLECTIVITY

An apparatus, e.g. a proximity sensor module (), for optical distance sensing includes a target surface () having a non-uniform design including a high-reflectivity region and a low-reflectivity region for light of a particular wavelength. The position of the target surface () is displaceable within the apparatus. The apparatus includes a light source () operable to emit light at the particular wavelength toward the target surface (), and a photodetector () operable to sense at least some of the light emitted by the light source and subsequently reflected by the target surface (). A processor is operable to correlate an output from the photodetector () with a distance to the target surface (). A wall () may separate the light source () and photodetector () from one another, which can help reduce internal optical crosstalk. The light source () and photodetector () are mounted and electrically coupled to a substrate () that, in turn, can be mounted and electrically coupled to a printed circuit board (PCB) () of a host device. The light source () and photodetector () are surrounded laterally by a spacer or housing wall (). The target surface () may be the backside of a touch interactive display screen () in the host device, e.g., a portable computing device such as a smartphone, tablet, wearable device, personal digital assistant (PDA), or personal computer. Circuitry () can be implemented, for example, as an integrated circuit chip or other processor and may include software and/or a look-up table stored in memory that allows the circuitry () to correlate the measured photodetector signal to a distance. When pressure is provided on the display screen () (e.g., by a person pressing her finger on the screen), the display screen is displaced slightly in the direction of the substrate () on which the light source () and photodetector () are mounted. As a result of the displacement, the intensity of light detected by the photodetector () changes. The signal measured by the ...

Fiber Optic Position Sensing System

A fiber optic sensing system for determining the position of an object requires a light source, an optical fiber, a fiber optic splitter, a fiber tip lens, an optical detector and signal processing circuitry. Light emitted by the light source is conveyed via optical fiber and the splitter to the lens and onto an object, such that at least a portion of the light is reflected by the object and conveyed via fiber and the splitter to the detector. Signal processing circuitry coupled to the detector determines the position of the object with respect to the lens based on a characteristic of the reflected light. The system is suitably employed with a hydraulic accumulator having a piston, the position of which varies with the volume of fluid in the accumulator, with the system arranged to determine the position of the piston, from which the volume can be calculated.

ACTIVE BLADE TRACKER AND RELATED SYSTEMS AND METHODS

Devices, methods and systems are provided for monitoring movement of an object, such as rotation of a blade or other airfoil. One exemplary tracking device includes a first emitter to emit first radiation along a first line of sight, a first detector proximate the first emitter to detect the first radiation, a second emitter to emit second radiation along a second line of sight, and a second detector proximate the second emitter to detect the second radiation. 1. A tracking device comprising:a first emitter to emit first radiation along a first line of sight towards a reference plane of motion for an object;a first detector proximate the first emitter to detect at least a first portion of the first radiation reflected from the reference plane;a second emitter to emit second radiation along a second line of sight towards the reference plane; anda second detector proximate the second emitter to detect at least a second portion of the second radiation reflected from the reference plane.2. The tracking device of claim 1 , further comprising a housing having the first emitter claim 1 , the first detector claim 1 , the second emitter claim 1 , and the second detector contained therein claim 1 , wherein the housing includes an aperture portion aligned with the first line of sight and the second line of sight.3. The tracking device of claim 1 , wherein the first line of sight and the second line of sight intersect between the tracking device and the reference plane.4. The tracking device of claim 3 , wherein:the first detector detects the first radiation in response to the object traversing the first line of sight; andthe second detector detects the second radiation in response to the object traversing the second line of sight.5. The tracking device of claim 1 , wherein:the first detector is substantially aligned with the first line of sight; andthe second detector is substantially aligned with the second line of sight.6. The tracking device of claim 5 , wherein the first ...

Image processing apparatus, solid object detection method, solid object detection program, and moving object control system

An image processing apparatus installed in a subject vehicle includes an imaging unit 100 that photographs images of a front area (imaging area) in the traveling direction of the subject vehicle and a stereo image processor that detects an object to be detected such as a pedestrian present in the imaging area. The stereo image processor detects a guardrail-analogous object based on a horizontal-parallax image, designates a detection area β based on the detected guardrail-analogous object, and detects the object present in the detection area β.

LASER SCANNER WITH ENHANCED DYMANIC RANGE IMAGING

A system and method for measuring three-dimensional (3D) coordinates is provided. The method includes rotating a 3D scanner about a first axis, the 3D scanner having a light source, a light receiver and a color camera. A light beams are emitted from the light source and reflected light beams are received with the light receiver. A processor determines 3D coordinates of points on the object based on the emitted light beams and the reflected light beams. For each of the points an intensity value is measured based on the reflected light beams. A color image of the object is acquired with the color camera. The intensity values are fused with the color image to generate an enhanced image, the enhanced image includes color data. Color data is merged with the 3D coordinates of the points. The 3D coordinates of the points are stored with the color data. 1. A method for measuring three-dimensional (3D) coordinates comprising:rotating a 3D scanner about a first axis, the 3D scanner having a light source, a light receiver and a color camera;emitting a plurality of light beams from the light source and receiving with the light receiver a plurality of reflected light beams from an object surface within a scan area, the direction of each of the plurality of light beams being determined by a beam steering unit;determining, with a processor system, 3D coordinates of a collection of points on the object surface within a scan area based at least in part on the plurality of light beams and the plurality of reflected light beams;measuring for each of the collection of points an intensity value based on the plurality of reflected light beams;acquiring at least one color image of the object with the color camera;fusing the intensity values with the at least one color image to generate at least one enhanced image, the at least one enhanced image having color data;merging color data with the 3D coordinates of the collection of points; andstoring the 3D coordinates of the collection of ...

DIMENSIONING SYSTEM

A method for determining the dimensions of an object comprises projecting a laser pattern (e.g., a visible laser pattern) onto an object, capturing an image of the projected pattern on the object, and determining the dimensions of the object based, at least in part, on the captured image. An exemplary method includes projecting a laser pattern (e.g., a grid or a set of lines) onto a rectangular box. Typically, the box is positioned such that two non-parallel faces are visible to the system or device projecting the laser pattern and a camera system with known field of view characteristics. The camera system is used to capture an image of the laser light reflecting off of the box. 1. A method for determining the dimensions of an object , comprising:projecting a laser pattern onto the object;capturing an image of the projected pattern on the object; anddetermining the dimensions of the object based, at least in part, on the captured image.2. The method according to claim 1 , wherein the step of capturing an image is performed using a camera system with known field of view characteristics.3. The method according to claim 2 , wherein the known field of view characteristics comprise size of the field of view claim 2 , aspect ratio claim 2 , and/or distortion.4. The method according to claim 1 , wherein the step of capturing an image is performed using a camera system claim 1 , the method comprising determining the distance between the camera system and the object.5. The method according to claim 1 , wherein the steps of projecting a laser pattern onto the object and capturing an image of the projected pattern on the object are performed using an integrated device that projects the laser pattern and captures the image.6. The method according to claim 1 , wherein:the step of projecting a laser pattern onto the object comprises projecting a laser pattern having a central feature; andthe step of capturing an image of the projected pattern on the object comprises capturing an ...

Laser-based coordinate measuring device and laser-based method for measuring coordinates

A method for measuring a distance includes modulating the light beam at a first frequency, receiving a second beam by the optical detector to produce a first electrical signal having the first frequency and a first phase; modulating the light beam at a second frequency different than the first frequency; receiving the second beam by the optical detector to produce a second electrical signal having the second frequency and a second. After these steps, the retroreflector is moved while modulating the light beam continuously at the second frequency; and a first distance to the retroreflector is determined based at least in part on a the first and second frequencies and phases.

Method and apparatus for determining spatial parameter based on image and terminal device

A method for determining a spatial parameter for an object displayed on a device includes determining a first pixel coordinate corresponding to a first point of an image of the object and a second pixel coordinate corresponding to a second point of an image of the object displayed on the device, determining an image distance between the first pixel coordinate and the second pixel coordinate, and determining a spatial parameter for the object based on a distance between an imaging element of the device and the object, and a focal length of a lens of the imaging element for photographing the object. According to the technical solution of the present disclosure, the real size of the photographed object can be quantized based on the image, without having to illustrating the real size of the photographed object in contrast with a reference object placed in the image, thereby improving the user experience.

LASER REMOTE LENGTH MEASUREMENT INSTRUMENT

A laser remote length measurement instrument capable of remotely measuring a length between two required points in a non-contact manner is provided. The laser remote length measurement instrument includes a rangefinding unit, an optical axis deflection section, a rotation angle detector, and a computation controller. The rangefinding unit is configured to cause a light emitting element to emit visible rangefinding light and obtain a light reception signal. The optical axis deflection section is configured to scan to-and-fro between two directions with the rangefinding light. The rotation angle detector is configured to detect a divergence angle between the two directions. The computation controller is configured to compute a distance between illuminated points in the two directions illuminated with the rangefinding light on the basis of rangefinding results for the illuminated points and the divergence angle between the two directions. 1. A laser remote length measurement instrument comprising:a rangefinding unit configured to cause a light emitting element to emit visible rangefinding light and obtain a light reception signal;an optical axis deflection section configured to scan to-and-fro between two directions with the rangefinding light;a rotation angle detector configured to detect a divergence angle between the two directions; anda computation controller;the computation controller being configured to compute a distance between illuminated points in the two directions illuminated with the rangefinding light on the basis of rangefinding results for the illuminated points and the divergence angle between the two directions.2. The laser remote length measurement instrument according to claim 1 , wherein:the optical axis deflection section is a scanning mirror; andthe computation controller rotationally oscillates the scanning mirror to-and-fro at a required rotation angle.3. The laser remote length measurement instrument according to claim 1 , wherein:the optical ...

Digital-Optical Object Tracker

A digital-optical tracking device and methods for tracking and timing swimmers are disclosed. The digital-optical tracking device is waterproof and submersible, and includes a stereo optical system that takes digital stereo images of an underwater region. The stereo optical system includes at least two optical elements, each of which forms an image in the stereo image. The tracking methods involve repeatedly determining distances to swimmers by measuring distances between stereo copies of the swimmers in successive, time-stamped stereo images. The methods may use predictive algorithms to determine regions of interest within the stereo images in which the swimmers are likely to be found. Once tracking data is established, it is displayed to the swimmers during their workouts and may be shared among multiple trackers in a peer-to-peer configuration, saved for later reference, and sent to a coach station or stations for real-time analysis. 120.-. (canceled)21. A method , comprising:obtaining a series of digital stereo images of a swimmer during a workout, each stereo image having a separation distance between stereo copies of the swimmer, using a stereo optical tracking device placed underwater in a position to observe the swimmer;for each of the series of digital stereo images, deriving, based on the separation distance, a physical distance to the swimmer;determining, during the workout and based on the physical distances to the swimmer, performance metrics for the swimmer, the performance metrics including at least a lap time and a lap count; anddisplaying at least some of the performance metrics to the swimmer during the workout.22. The method of claim 21 , wherein said deriving comprises using a non-trigonometric function that relates the separation distance to the physical distance to the swimmer.23. The method of claim 22 , wherein the non-trigonometric function is derived from empirical data.24. The method of claim 21 , wherein the performance metrics further ...

OBSERVATION DEVICE

An observation device capable of observing a subject plane. The observation device includes a light receiving surface and an imaging optical system for forming an image of light from the subject plane onto the light receiving surface. The imaging optical system includes a concave primary mirror, a secondary mirror, and a flat extraction mirror. The beam of the light from the subject plane is reflected at the concave primary mirror, the convex secondary mirror, and the concave primary mirror in the named order, after which an image of the beam is formed on the light receiving surface via the flat extraction mirror. The observation device changes an angle α and an angle β. 1. An observation device comprising:a light receiving surface that receives light from a subject plane; and the imaging optical system comprises an equimagnification reflective imaging optical system that includes a concave primary mirror, a convex secondary mirror, and a flat extraction mirror, and', 'the imaging optical system reflects a beam of the light from the subject plane at the concave primary mirror, the convex secondary mirror, and the concave primary mirror in that order, and then forms the image on the light receiving surface via the flat extraction mirror;, 'an imaging optical system that forms an image of the light from the subject plane on the light receiving surface, wherein'}first tilting means that changes an angle α defined between first optical axis of light directed toward the concave primary mirror from the subject plane and a perpendicular line to the subject plane; andsecond tilting means that changes an angle β defined between second optical axis of light directed toward the light receiving surface from the flat extraction mirror and a perpendicular line to the light receiving surface.2. The observation device according to claim 1 , comprising:control means that controls the first tilting means and the second tilting means,the control means controlling the first tilting ...

Method and apparatus for contactless high-resolution determination and control of an object position

A high-sensitivity optical system to determine and/or control spatial displacement and position of objects applicable to various situations when a contact measurement cannot be performed, such as in high-vacuum or ultra-high vacuum chambers, at high temperatures, in aggressive chemical environments, etc. A laser beam is directed at a low glancing angle to a screen secured to an object. The screen's surface is normal to a motion direction of interest. A location of the bright laser beam spot on the screen surface is acquired and the displacement thereof is analyzed and quantified based on the change in distance from the laser beam spot to a reference element which is arranged on the screen and creates a variation in the acquired image brightness. A feedback loop control mechanism is provided which returns the displaced object to its original position.

METHOD FOR ELECTRONICALLY ANALYZING A SIGNAL CHANGING OVER TIME

The invention relates to a method for electronically analyzing a time-variant signal (U(t)) having at least one extreme value, the amplitude and time of which are to be detected, by means of a detection circuit that operates as a peak value store and follows the time-variant signal after a threshold value (U) is exceeded until the maximum amplitude is reached, wherein exceedance of the extreme value results in a peak indicator signal (U(t)) being generated and the maximum amplitude being stored, which is characterized in that to capture more than one extreme value in the time-variant signal, the tracking of the signal (Ue(t)) is deactivated after production of the first peak indicator signal and after a drop below the threshold value and, after the signal exceeds the threshold value again as time progresses, further tracking of the signal (U(t)) is activated until the next extreme value to be detected is reached and a further peak indicator signal (U(t)) is generated and this further maximum amplitude is stored, and the two stores are read and reset at the end of the measurement cycle. 1. A method for electronically analyzing a time-variant signal (U(t)) having at least one extreme value , the amplitude and time of which are to be detected , by means of a detection circuit that operates as a peak value store and follows the time-variant signal after a threshold value (U) is exceeded until the maximum amplitude is reached , wherein exceedance of the extreme value results in a peak indicator signal (U(t)) being generated and the maximum amplitude being stored ,characterized{'sub': e', 'si, 'in that to capture more than one extreme value in the time-variant signal, the tracking of the signal (Ue(t)) is deactivated after production of the first peak indicator signal and after a drop below the threshold value and, after the signal exceeds the threshold value again as time progresses, further tracking of the signal (U(t)) is activated until the next extreme value to be ...

METHODS AND APPARATUS TO COORDINATE MOVEMENT OF AUTOMATED VEHICLES AND FREIGHT DIMENSIONING COMPONENTS

A method and apparatus for dimensioning an object carried by an automated pallet mover is disclosed. An example includes an image sensor configured to capture image data representative of a dimensioning area. A dimensioning coordinator is remotely located from an automated transportation system capable of moving the automated pallet mover. The dimensioning coordinator detects a dimensioning trigger condition associated with the pallet mover and sends first instructions to the automated transportation system to move the vehicle to the dimensioning area, and second instructions to coordinate movement of the vehicle and image capture operation to perform dimensioning on the object. 1. A system for dimensioning an object carried by an automated vehicle , the system comprising:an image sensor configured to capture image data representative of a dimensioning area; anda dimensioning stage manager having a processor and a memory, the dimensioning stage manager remotely located from an automated transportation system capable of moving the automated vehicle according to computer-readable instructions,the dimensioning stage manager configured to detect a dimensioning trigger condition associated with the automated vehicle,the dimensioning stage manager configured, in response to the dimensioning trigger condition occurring, send a first instruction to the automated transportation system to move the automated vehicle to the dimensioning area,the dimensioning stage manager having a dimensioning coordinator configured to in response to the automated vehicle entering the dimensioning area, coordinate movement of the automated vehicle in the dimensioning area with an image capture operation of the image sensor.2. The system of claim 1 , wherein the dimensioning stage manager is configured to determine a shape of the object; andwherein the dimensioning coordinator is configured to determine a second instruction based on the shape of the object, wherein coordinating the movement of ...

Imager for Detecting Visual Light and Projected Patterns

Methods and systems for depth sensing are provided. A system includes a first and second optical sensor each including a first plurality of photodetectors configured to capture visible light interspersed with a second plurality of photodetectors configured to capture infrared light within a particular infrared band. The system also includes a computing device configured to (i) identify first corresponding features of the environment between a first visible light image captured by the first optical sensor and a second visible light image captured by the second optical sensor; (ii) identify second corresponding features of the environment between a first infrared light image captured by the first optical sensor and a second infrared light image captured by the second optical sensor; and (iii) determine a depth estimate for at least one surface in the environment based on the first corresponding features and the second corresponding features. 1. A system comprising:a first optical sensor and a second optical sensor, wherein each optical sensor comprises a first plurality of photodetectors configured to capture visible light interspersed with a second plurality of photodetectors configured to capture infrared light within a particular infrared band, and wherein the first optical sensor is separate from the second optical sensor;a light source configured to project infrared light of a wavelength within the particular infrared band onto an environment; and identify first corresponding features of the environment between a first visible light image captured by the first optical sensor and a second visible light image captured by the second optical sensor, wherein identifying the first corresponding features comprises determining a first correlation surface from the first visible light image and the second visible light image;', 'identify second corresponding features of the environment between a first infrared light image captured by the first optical sensor and a second ...

Apparatus and method for remote optical caliper measurement

An apparatus and method for performing optical caliper measurements remotely, including an unmanned aerial vehicle, a camera attached to the unmanned aerial vehicle, and an optical caliper measurement tool attached to the unmanned aerial vehicle, where the optical caliper measurement tool includes a mount, a laser source attached to the mount, and a beam splitter attached to the mount, where the laser source is configured to direct a laser beam through the beam splitter to split the laser beam into two parallel laser beams separated by a fixed distance.

AUTOMATIC MODE SWITCHING IN A VOLUME DIMENSIONER

Dimensioners and methods for dimensioning an object includes capturing, using a dimensioning system with a single sensor, at least one range image of at least one field-of-view, and calculating dimensional data of the range images and storing the results. Wherein, the number of views captured of the object is automatically determined based on one of three modes. The first mode is used if the object is a cuboid, or has no protrusions and only one obtuse angle that does not face the point of view, where it captures a single view of the object. The second mode is used if the object includes a single obtuse angle, and no protrusions, where it captures two views of the object. The third mode is used if the object includes a protrusion and/or more than one obtuse angle, overhang, protrusion, or combinations thereof, where it captures more than two views of the object. 120-. (canceled)21. A dimensioning system , comprising:a pattern projector configured to project a light pattern onto an object;a range camera configured to capture a first light pattern image of the object from a first view and generate a first range image based on the first light pattern image; and calculate a first set of dimensions of the object based on the first range image;', 'determine that the object comprises one or more obtuse angles based on the first range image;', 'cause the range camera to capture a second light pattern image of the object from a second view and generate a second range image based on the second light pattern image, wherein the second view is different from the first view;', 'calculate a second set of dimensions of the object based on the second range image; and', 'determine a minimum bounding box for the object based at least on the first set of dimensions and the second set of dimensions., 'a processor communicatively coupled to the pattern projector and the range camera, wherein the processor is configured by software to22. The dimensioning system of claim 21 , wherein when ...

Proximity Sensing On Mobile Robots

A proximity sensor includes first and second sensors disposed on a sensor body adjacent to one another. The first sensor is one of an emitter and a receiver. The second sensor is the other one of an emitter and a receiver. A third sensor is disposed adjacent the second sensor opposite the first sensor. The third sensor is an emitter if the first sensor is an emitter or a receiver if the first sensor is a receiver. Each sensor is positioned at an angle with respect to the other two sensors. Each sensor has a respective field of view. A first field of view intersects a second field of view defining a first volume that detects a floor surface within a first threshold distance. The second field of view intersects a third field of view defining a second volume that detects a floor surface within a second threshold distance.

ABRASION INSPECTION APPARATUS, ABRASION INSPECTION METHOD, AND PROGRAM

An abrasion inspection apparatus includes: a first imaging unit installed on a track along which a vehicle is traveling, a guide wheel installed on the vehicle, the first imaging unit imaging an inside of the track; a second imaging unit installed on the track in a vehicle traveling direction with respect to the first imaging unit and imaging the inside of the track; an image acquisition unit acquiring a first image of a boundary of the guide wheel captured by the first imaging unit on a first direction side in the vehicle traveling direction, and a second image of the boundary of the guide wheel captured by the second imaging unit at the same time on an opposite side to the first direction side; and a guide wheel detection unit detecting an abrasion situation of the guide wheel according to a position of a boundary indicated in the acquired images. 1. An abrasion inspection apparatus comprising:a first imaging unit that is installed on a side of a track, a vehicle traveling along the track, a guide wheel being installed on a side of the vehicle, the first imaging unit imaging an inside of the track via a telecentric lens;a second imaging unit that is installed in a vehicle traveling direction with respect to the first imaging unit on the side of the track and images the inside of the track via a telecentric lens;an image acquisition unit that acquires an image which is an image of a boundary of the guide wheel captured by the first imaging unit and is an image of a boundary on a first direction side in the vehicle traveling direction and an image which is an image of the boundary of the guide wheel captured by the second imaging unit at the same time as the capturing of the image by the first imaging unit and is an image of a boundary on an opposite side to the first direction side; anda guide wheel detection unit that detects an abrasion situation of the guide wheel according to a position of a boundary indicated in the images acquired by the image acquisition ...

CONTROLLER, CONTROL METHOD, AND CONTROL PROGRAM

A controller () includes: an acquisition unit () that acquires image data captured by an imaging device () for photographing disposed in a moving body; and a calculation unit () that calculates a relative position of a position of a subject, which is detected by a plurality of distance-measuring imaging devices (--- and -) provided in the moving body, based on the subject included in the image data. 1. A controller comprising:an acquisition unit that acquires image data captured by an imaging device for photographing disposed in a moving body; anda calculation unit that calculates a relative position of a position of a subject, which is detected by a plurality of distance-measuring imaging devices provided in the moving body, based on the subject included in the image data.2. The controller according to claim 1 , whereinthe calculation unit calculates the relative position based on the subject positioned in an overlapping area in which at least a part of an imaging area of the imaging device for photographing and a distance measuring area of a plurality of the distance-measuring imaging devices overlaps each other.3. The controller according to claim 2 , whereinthe imaging device for photographing is rotatably disposed in the moving body.4. The controller according to claim 3 , whereinthe calculation unit calculates the relative position between a first distance-measuring imaging device and a second distance-measuring imaging device based on a first subject positioned in a first overlapping area in which at least a part of the imaging area and a first distance measuring area of the first distance-measuring imaging device of a plurality of the distance-measuring imaging devices overlaps each other, and a second subject positioned in a second overlapping area in which at least a part of the imaging area and a second distance measuring area of the second distance-measuring imaging device of a plurality of the distance-measuring imaging devices overlaps each other.5. ...

Information processing apparatus, information processing method, and recording medium

An information processing apparatus according to the present disclosure includes an acquisition unit that acquires a change in a distance between a real object that is operated by a user in a real space and a virtual object that is superimposed in the real space in the display unit, on the basis of a detection result of a sensor that detects a position of the real object, and an output control unit that displays, on the display unit, a sensory organ object representing a sensory organ of the virtual object for recognizing the real space, and continuously changes a predetermined region of the sensory organ object in accordance with the change in the distance acquired by the acquisition unit.

System and Method for Improving 3D Sensor Measurement Accuracy

Systems and methods improving three-dimensional sensor measurement accuracy are provided. For instance, an example apparatus can include a distance-estimation system, a distance-refinement system, and a processing system. The distance-estimation system can be configured to receive a first optical signal and determine a first distance between two points in an environment. The distance-refinement system can be configured to receive a second optical signal and determine a second distance between the two points in the environment. The processing system can be configured to receive information representing the first distance and the second distance and determine, based on the first distance and the second distance, a third distance between the two points in the environment. The difference between a true distance of the two points in the environment and the first distance can be larger than a difference between the true distance of the two points in the environment and the third distance.

DISTANCE MEASURING SYSTEM AND METHOD USING THEREOF

A distance measuring system includes a light emitting member, an optical member, an image sensing member, and a computing member. The light emitting member provides a light beam to an object. The optical member is disposed on a transmission path of the light beam reflected by the object. The image sensing member is disposed on a transmission path of the part of the light beam passing through the optical member, and the image sensing member has an image sensing area for receiving the part of the light beam passing through the optical member and receiving the part of the light beam not passing through the optical member. The computing member compares a difference between the deformation area and the non-deformation area of the object image so as to obtain a distance variation of the object. 1. A distance measuring system , comprising:an image sensing member having an image sensing area;an optical member partly overlaps the image sensing area, wherein the image sensing member is used for capturing an image, and the image includes a deformation area and a non-deformation area; anda computing member for comparing a difference between the deformation area and the non-deformation area of the image so as to obtain a distance data.2. The distance measuring system as claimed in claim 1 , wherein the image sensing member includes a controlling unit which controls the light emitting member providing a light beam to an object in the image sensing area.3. The distance measuring system as claimed in claim 2 , wherein when the object is at a first position claim 2 , the image sensing member captures a first bright image while the light beam is incident to the object claim 2 , the image sensing member captures a dark image while the light beam is not incident to the object claim 2 , the image sensing member calculates a first difference image based on the first bright image and the first dark image claim 2 , and the first difference image includes a first deformation area of the ...

LASER DISPLACEMENT METER AND LASER ULTRASONIC INSPECTION APPARATUS USING THE SAME

A laser displacement meter includes: a laser array beam source unit including a plurality of lasers emitting beams with different wavelengths; a lens array unit including a plurality of lenses for focusing laser beams; a reflected beam lens array unit including a plurality of focusing lenses for focusing the beam reflected on the surface of the object; an optical filter array unit including a plurality of optical filters through which the reflected beam is selectively transmitted; and a photodetector array unit including a plurality of photodetectors for detecting the beam transmitted through the optical filters. 1. A laser displacement meter for detecting a laser beam reflected from an object to measure a displacement occurring in the object , comprising:a laser array beam source unit including a plurality of lasers emitting beams with different wavelengths;a lens array unit including a plurality of lenses for focusing laser beams;a reflected beam lens array unit including a plurality of focusing lenses for focusing the beam reflected on the object;an optical filter array unit including a plurality of optical filters through which the reflected beam is selectively transmitted; anda photodetector array unit including a plurality of photodetectors for detecting the beam transmitted through the optical filters.2. The laser displacement meter according to claim 1 , further comprising:a unit for correcting sensitivity of the photodetector.3. The laser displacement meter according to claim 1 , whereinthe laser array beam source unit is a semiconductor laser.4. The laser displacement meter according to claim 3 , further comprising:an optical transmission medium that guides beam emitted from the semiconductor laser.5. The laser displacement meter according to claim 3 , whereinthe laser array beam source unit is configured such that multi-wavelength laser beams are set to a visible range so as to be used as a guide beam.6. The laser displacement meter according to claim 3 , ...

Distance Calculator and Distance Calculation Method

In order to be able to measure a distance with disparity resolution of a stereo camera or less and precisely measure a relative distance to a target even in the event of degradation of the imaging condition, a distance calculator includes a monocular distance calculation section , a stereo distance calculation section , a blurriness level calculation section , a distance estimation section , and an output distance calculation section . The monocular distance calculation section calculates the distance to a target based on image information captured by a camera or . The stereo distance calculation section calculates the distance to the target based on image information captured by the two cameras and . The blurriness level calculation section calculates the blurriness level of the image information captured by the image information captured by the cameras and . The distance estimation section estimates the distance to the target at the time of capturing of images by the cameras and . The output distance calculation section calculates the distance to the target to be output. The output distance calculation section selects, as the distance to be output, the distance calculated by the monocular distance calculation section or the distance calculated by the stereo distance calculation section based on the blurriness level and the estimated distance. 15-. (canceled)6. A distance calculator for an imaging system having a plurality of imaging devices , the distance calculator comprising:a first distance calculation section adapted to calculate distance to a target based on image information captured by one of the plurality of imaging devices;a second distance calculation section adapted to calculate distance to the target based on image information captured by at least two of the plurality of imaging devices;a blurriness level calculation section adapted to calculate the blurriness level of the image information captured by the single imaging device and that of the image ...

LASER SCANNER WITH PROJECTOR

A three-dimensional (3D) measuring device and a method of operating is provided. The 3D measuring device includes a housing and a processor system including at least one of a 3D scanner controller. A 3D scanner is disposed within the housing and operably coupled to the processor system, the scanner having a light source, a beam steering unit, a first angle measuring device, a second angle measuring device, and a light receiver. The scanner cooperates with the processor system to determine 3D coordinates of an object point. A laser projector includes a second light source and a movable mirror system, the second light source positioned to emit light onto the movable mirror system. The processor system causes the light source to emit light and the mirror to move to generate a pattern on a surface in the environment based at least in part on the 3D coordinates. 1. A three-dimensional (3D) measuring device comprising:a processor system including at least one of a 3D scanner controller;a housing;a 3D scanner disposed within the housing and operably coupled to the processor system, the 3D scanner having a light source, a beam steering unit, a first angle measuring device, a second angle measuring device, and a light receiver, the beam steering unit cooperating with the light source and the light receiver to define a scan area, the light source and the light receiver configured to cooperate with the processor system to determine a first distance to a first object point based at least in part on a transmitting of a light by the light source and a receiving of a reflected light by the light receiver, the 3D scanner configured to cooperate with the processor system to determine 3D coordinates of the first object point based at least in part on the first distance, a first angle of rotation and a second angle of rotation;a laser projector operably coupled to the housing, the laser projector having a second light source and a movable mirror system consisting of one or more ...

Angle detecting device and angle detecting method

An angle detecting device for detecting a bending angle of an element. The element comprises a first connecting portion and a second connecting portion bent relative to the second connecting portion. The angle detecting device comprises a fixing member, a non-contact range finder and a base. The fixing member comprises a first fixing portion and a second fixing portion. The fixing member and the non-contact range finder is mounted on the base. The first fixing portion cooperates with the second fixing portion to fix the first connecting portion. The non-contact range finder faces the second connecting portion to detect a distance between the second connecting portion and the non-contact range finder, and determine whether the distance is within a preset range. An angle detecting method using the above angle detecting device is also provided.

DIMENSIONING SYSTEM WITH GUIDED ALIGNMENT

A dimensioning system including a computing device running an alignment software program is disclosed. The alignment software uses range information from a range sensor in order to generate alignment messages. The alignment messages may help a user define a frame of reference and align the dimensioning system's range sensor for improved dimensioning performance. 1. A dimensioning system comprising:a range sensor for capturing range images of a field of view;an adjustable range-sensor support to physically support and position the range sensor in a range-sensor pose;a computing device communicatively coupled to the range sensor, the computing device capable of executing adjustment software;wherein said adjustment software generates adjustment messages to facilitate the adjustment of the range-sensor pose, the adjustment software configuring the computing device to: (i) receive the range images, (ii) compute, using the range images, a pose difference, (iii) generate, based on the pose difference, adjustment messages, and (iv) transmit the adjustment messages to a display communicatively coupled to the computing device.2. The dimensioning system according to claim 1 , wherein the adjustment software generates adjustment messages until the pose difference is minimized below an adjustable threshold value.3. The dimensioning system according to claim 1 , wherein the range sensor comprises a stereo arrangement of (i) a pattern projector for projecting a light pattern within a field of view and (ii) a range camera for capturing images of the reflected light pattern.4. The dimensioning system according to claim 1 , wherein the light pattern is invisible.5. The dimensioning system according to claim 1 , wherein the range sensor comprises a color camera for capturing color images of visible light within the field of view.6. The dimensioning system according to claim 1 , wherein the adjustment software further configures the computing device to detect planar surfaces in the ...

APPARATUS AND METHOD FOR MEASURING QUALITY OF HOLOGRAPHIC IMAGE

An apparatus and a method for measuring quality of a holographic image are disclosed. The apparatus for measuring the quality of the holographic image may include an obtaining unit to obtain a hologram, a reconstruction unit to reconstruct a three-dimensional (3D) holographic image by irradiating the hologram with a light source, a measuring unit to measure depth of the reconstructed holographic image, and an analysis unit to analyze depth representation quality of the holographic image base on the measured depth of the holographic image. 1. An apparatus for measuring quality of a holographic image , the apparatus comprising:an obtaining unit to obtain a hologram;a reconstruction unit to reconstruct a three-dimensional (3D) holographic image by irradiating the hologram with a light source;a measuring unit to measure depth of the reconstructed holographic image; andan analysis unit to analyze depth representation quality of the holographic image based on the measured depth of the holographic image.2. The apparatus of claim 1 , wherein the analysis unit compares the depth of the holographic image with depth of an original image associated with an object and analyzes the depth representation quality based on a comparison result.3. The apparatus of claim 1 , wherein the obtaining unit receives input of red claim 1 , green and blue (RGB) brightness information and 3D information on an object and obtains the hologram using the input RGB brightness information and 3D information.4. The apparatus of claim 1 , wherein the obtaining unit comprises a beam splitter to equally split beams to respectively transmit the beams to an object and a mirror; and a camera to obtain the hologram corresponding to an interference pattern of beams reflected from the object with respect to beams reflected from the mirror.5. The apparatus of claim 1 , wherein the reconstruction unit comprises a laser unit to generate a laser as the light source; a collimator to output the generated laser as ...

DIMENSION MEASUREMENT APPARATUS

In one embodiment, a dimension measurement apparatus has a camera a processing device. The processing device acquires a distance image of an object to be measured which is to be generated by the camera. The processing device divides the distance image into an X coordinate image, a Y coordinate image, and a Z coordinate image, removes a coordinate point not corresponding to one reference surface of the object to be measured, in the respective coordinate images, and detects coordinate images of the reference surface corresponding to the reference surface. 1. A dimension measurement apparatus , comprising:a camera which photographs an object to be measured to generate a distance image of the object to be measured; anda processing device which generates dimension data indicating a length, a width, and a height of the object to be measured, based on the distance image generated by the camera;the processing device having a memory to store a control program for generating the dimension data and a controller;the controller executing the control program,to acquire the distance image of the object to be measured,to divide the acquired distance image into an X coordinate image, a Y coordinate image, and a Z coordinate image in a three-dimensional space,to remove a coordinate point not corresponding to one reference surface of the object to be measured, in the respective divided X coordinate image, Y coordinate image, and Z coordinate image, to detect an X coordinate image, a Y coordinate image, and a Z coordinate image of the reference surface, andto generate the dimension data indicating the length, the width, and the height of the object to be measured, based on the respective detected coordinate images of the reference surface.2. The dimension measurement apparatus according to claim 1 , wherein:the controller performs an X coordinate image processing which removes an X coordinate point in a range not corresponding to the reference surface from the divided X coordinate ...

CLEARANCE MEASUREMENT DEVICE, CLEARANCE MEASUREMENT SENSOR, AND CLEARANCE MEASUREMENT METHOD

A clearance measurement device is a device for measuring a clearance between an inner peripheral surface of a casing and an outer peripheral surface of a rotary body. This device: emits light having a first wavelength and a second wavelength, respectively, towards the outer peripheral surface of the rotary body; receives the light reflected from the outer peripheral surface via a first filter having a transmission band corresponding to the first wavelength and via a second filter having a transmission band corresponding to the second wavelength; and measures the clearance based on a time difference of the moment to detect the rotary body. 1. A clearance measurement device for measuring a clearance generated between an inner peripheral surface of a casing having a cylindrical shape and an outer peripheral surface of a rotary body rotating within the casing ,the clearance measurement device comprising:a first irradiation unit attached with the casing and emitting light with a first wavelength towards the outer peripheral surface of the rotary body;a second irradiation unit attached with the casing and emitting light with a second wavelength, which is different from the first wavelength, towards the outer peripheral surface of the rotary body;a first light receiving unit receiving the light reflected from the outer peripheral surface of the rotary body via a first filter unit having a transmission band corresponding to the first wavelength;a second light receiving unit receiving the light reflected from the outer peripheral surface of the rotary body via a second filter unit having a transmission band corresponding to the second wavelength; anda measurement unit measuring the clearance on the basis of a time difference between the first light receiving unit and the second light receiving unit regarding moment to detect the rotary body on the basis of a light reception result of the first light receiving unit and the second light receiving unit,wherein the first light ...

DETECTION DEVICE

A detection device includes a light projection unit that projects light to a detection region, a lens that focuses the light having been projected from the light projection unit and reflected by the detection region, an image sensor that includes a plurality of light receiving elements and receives the light focused by the lens for each of the light receiving elements, a distance calculation unit that calculates, on the basis of a result of light reception by the image sensor, a distance to an object present in the detection region with a TOF method for each of light reception positions at which the light receiving elements are located, and a position calculation unit that calculates a position of the object present in the detection region on the basis of the distance calculated by the distance calculation unit for each light reception position. 1. A detection device , comprising:a light projector configured to project light to a detection region;a lens that focuses the light having been projected from the light projector and reflected by the detection region;an image sensor that includes a plurality of light receiving elements and receives the light focused by the lens for each of the light receiving elements;a distance calculation circuit configured to calculate, on the basis of a result of light reception by the image sensor, a distance to an object present in the detection region with a TOF method for each of light reception positions at which the light receiving elements are located; andan object position calculation circuit configured to calculate a position of the object on the basis of the distance calculated by the distance calculation circuit for each light reception position.2. The detection device according to claim 1 , wherein the object position calculation circuit is further configured to calculate the position to the object on the basis of a position of an image of the object claim 1 , the image being focused on the image sensor claim 1 , a distance ...

OPTICAL DISTANCE MEASUREMENT DEVICE AND PROCESSING DEVICE

An optical distance measurement device includes: a photodetector including PDs for receiving interference light output from an optical interference unit and outputting detection signals of the interference light; and a switch for selecting one of the detection signals output from the PDs, in which a distance calculation unit calculates a distance to a measurement object on the basis of the detection signal selected by the switch. 1. An optical distance measurement device comprising:a frequency sweep light outputting unit to output repeatedly frequency sweep light, a frequency of which changes with time in synchronization with a clock signal;an optical transmitter to output, as reference light, the frequency sweep light output from the frequency sweep light outputting unit and emit the frequency sweep light toward a measurement object;an optical interference unit to receive the frequency sweep light reflected on the measurement object as reflection light and output interference light of the reflection light and the reference light by causing interference between the reflection light and the reference light;a photodetector including multiple light receiving elements for receiving interference light output from the optical interference unit and outputting detection signals of the interference light;a control signal generator to generate a control signal indicating a detection signal to be selected in synchronization with the clock signal and outputting the control signal;a switch to select one of the detection signals output from the multiple light receiving elements in accordance with the control signal output by the control signal generator; anda distance calculator to calculate a distance to one portion of the measurement object on a basis of the detection signal selected by the switch.2. An optical distance measurement device comprising:a frequency sweep light outputting unit to repeatedly output frequency sweep light, a frequency of which changes with time in ...

AUTO-FOCUS METHOD FOR A COORDINATE MEASURING DEVICE

The present invention relates to a method for ascertaining a focus image distance of an optical sensor, which is provided with a lens, of a coordinate-measuring machine onto a workpiece to be measured, wherein the optical sensor and the workpiece are movable relative to one another in a Z direction such that a distance in the Z direction between the workpiece and the optical sensor is variable. The present invention furthermore relates to a corresponding coordinate-measuring machine and to a computer program product. 1. A method for ascertaining a focus image distance of an optical sensor , which is provided with a lens , of a coordinate-measuring machine onto a workpiece to be measured , wherein the optical sensor and the workpiece are movable relative to one another in a Z direction such that a distance in the Z direction between the workpiece and the optical sensor is variable , having the steps of:a) specifying a catchment region having a starting distance and an end distance, which have between them a maximum interval length;b) determining a minimum interval length in dependence on a depth of field of the lens;c) determining at least one further interval length starting from the minimum interval length, wherein starting from the minimum interval length in each case a next greater interval length is specified by multiplication by a scaling factor until the next greater interval length is equal to or greater than the maximum interval length;d) varying the distance between the workpiece and the optical sensor from the starting distance in the direction of the end distance, wherein the optical sensor captures images of the workpiece during the varying of the distance, and wherein each captured image is assigned a focus value and an image distance;e) determining a focus image distance at which the focus value between the starting distance and the end distance assumes an extreme value;f) specifying a new starting distance and a new end distance, wherein the new ...

AUTOMATED POSITION LOCATOR FOR A HEIGHT SENSOR IN A DISPENSING SYSTEM

Apparatus and methods of determining a position of a height sensor in a dispensing system. The dispensing system includes a dispenser, height sensor, camera, and a calibration device configured to receive a signal from the height sensor. The calibration device may include an optical sensor that generates an alignment signal in response to receiving light from the height sensor and/or a fiducial that causes the height sensor to generate the alignment signal in response to a detected height change. The alignment signal is used to automatically determine the position at which the height sensor is aligned with the calibration device. The position of the height sensor relative to a camera is determined by aligning the camera with the calibration device and recording its position. The recorded coordinates of the camera are compared to the coordinates of the height sensor when the height sensor is automatically aligned with the calibration device. 1. A method of determining a position of a height sensor in a dispensing system , the method comprising:moving the height sensor relative to a calibration device in order to align electromagnetic radiation emitted by the height sensor with the calibration device;generating an alignment signal with the calibration device in response to receipt of the electromagnetic radiation; andin response to generating the alignment signal, determining a first position in a plane associated with the height sensor.2. The method of wherein the electromagnetic radiation is a light beam claim 1 , the calibration device includes an optical sensor claim 1 , and generating the alignment signal comprises:aligning the light beam with the optical sensor; anddetecting the light beam with the optical sensor to generate the alignment signal.3. The method of wherein the height sensor comprises an assembly including a camera and a dispensing valve in which the camera has a fixed spatial position relative to the height sensor claim 2 , and generating the ...

Vehicle size measurement apparatus and vehicle size measuring method

An object of the invention is to measure an outside size of the vehicle accurately while running the vehicle. A plurality of the 1st sensors irradiate inspection lights to a plurality of places () of the vehicle of a railroad and output measurement signals which show positions and distances by receiving lights from a plurality of the places of the vehicle . The 2nd sensor or irradiates an inspection light to an outside surface of the vehicle and outputs a measurement signal which shows a position and a distance by receiving a light from the outside surface of the vehicle . The control equipment or the processing equipment processes the measurement signals outputted from a plurality of the 1st sensors , detects positions and heights of a plurality of the places of the vehicle , processes the measurement signal outputted from the 2nd sensor or , and detects the outside size of the vehicle . And the control equipment or the processing equipment calculates amounts of a deviation of the outside surface of the vehicle due to a swing of the vehicle based on amounts of fluctuations of the detected positions and heights of a plurality of the places of the vehicle , and corrects the detected outside size of the vehicle according to the calculated amounts of the deviation. 1. A vehicle size measurement apparatus , wherein said apparatus comprising:a plurality of the 1st sensors which irradiate inspection lights to a plurality of places of a vehicle of a railroad and output measurement signals which show positions and distances by receiving lights from a plurality of the places of said vehicle,the 2nd sensor which irradiates an inspection light to an outside surface of said vehicle and outputs a measurement signal which shows a position and a distance by receiving a light from the outside surface of said vehicle, andcontrol and processing equipment which controls a plurality of said 1st sensors and said 2nd sensor, processes said measurement signal outputted from said 2nd ...

REFLECTION-BASED MONOSCOPIC DEPTH PERCEPTION

A single camera can be used to determine a height of an object. The camera captures an image of the object against a reflective surface backdrop. The distance from the camera and the reflective surface, combined with the distance between the object and the reflection of the object, can be used to determine the distance from the object and the reflective surface. 1. An apparatus , comprising:an image capture device configured to capture images along a first axis;a reflective surface disposed a first distance along the first axis from the image capture device; anda first medium spanning a second distance along the first axis from the reflective surface.2. The apparatus of claim 1 , further comprising an entity suspended within the first medium.3. The apparatus of claim 1 , wherein the reflective surface comprises a first-surface mirror.4. The apparatus of claim 1 , wherein the reflective surface comprises a second-surface mirror.5. A method claim 1 , comprising:receiving an image from an image capture device;identifying a first entity in the image;identifying a second entity in the image;determining that the second entity is a reflection of the first entity;determining, based on the image, an apparent distance between the first entity and the second entity; anddetermining, based on the apparent distance and a first distance between the image capture device and a reflective surface, a second distance of the first entity from the reflective surface.6. The method of claim 5 , wherein:the first entity is suspended within a first substrate, the first substrate having a first refractive index and spanning a third distance along the first axis from the reflective surface; andthe second distance is determined based further on the first refractive index and the third distance.7. The method of claim 5 , further comprising controlling a focus of the image capture device based on the second distance.8. The method of claim 5 , wherein the identifying the first entity and the ...

Optical displacement meter

Reflected light from the measurement object is received by a plurality of pixel columns arranged in an X 2 direction in a light receiving unit 121 , and a plurality of light receiving amount distributions is output. One or a plurality of peak candidate positions of light receiving amounts in a Z 2 direction is detected by a peak detection unit 1 for each pixel column based on the plurality of light receiving amount distributions. A peak position to be adopted to a profile is selected from the peak candidate positions detected for each pixel column based on a relative positional relationship with a peak position of another pixel column adjacent to the pixel column, and profile data indicating the profile is generated by the profile generation unit 3 based on the selected peak position.

Products And Processes For Measuring The Surface Profile Of A Crop Or Pasture

Products and processes for measuring crop and pasture surface profile which may be used to measure the average surface profile of crop and pasture foliage around stationary measurement devices. 1. Device for measuring the surface profile of the canopy of a crop or pasture growing on a substrate , the device including a sensor member coupled to a support member that is configured to detachably mount to the substrate , wherein the support member is configured to:i) space the sensor member above the substrate by a first distance; andii) space the sensor member above the canopy of the crop or pasture by a second distance;and wherein the sensor member:i) includes a light transmission member that is configured to transmit light which is reflected by the canopy of the crop or pasture; andii) includes a light detection sensor that is configured to detect at least a portion of the light transmitted from the light transmission member that is reflected by the canopy of the crop or pasture so as to enable the measurement of the surface profile of the canopy of the crop or pasture.2. The device according to wherein the measurement of the surface profile of the canopy is used to calculate:crop or pasture height;crop or pasture density;crop or pasture metabolizable energy (ME); and/orcrop or pasture dry mass content.3. The device according to wherein the sensor member includes a plurality of light transmission members.46-. (canceled)7. The device according to wherein the light transmission members are oriented to transmit light radially outward from the sensor member at a range of angles to the vertical claim 3 , horizontal claim 3 , average slope of the substrate and/or average slope of the canopy of the crop or pasture.8. The device according to wherein the sensor member includes a plurality of light detection sensors.916-. (canceled)17. The device according to further including a radio communication module.1819-. (canceled)20. System for measuring the surface profile of the ...

INSTANT AUTO-FOCUS WITH DISTANCE ESTIMATION

Systems, apparatuses, and methods for implementing an instant auto-focus mechanism with distance estimation are disclosed. A camera includes at least an image sensor, one or more movement and/or orientation sensors, a timer, a lens, and control circuit. The control circuit receives first and second images captured by the image sensor of a given scene. The control circuit calculates a distance between first and second camera locations when the first and second images, respectively, were captured based on the one or more movement and/or orientation sensors and the timer. Next, the control circuit calculates an estimate of a second distance between the camera and an object in the scene based on the distance between camera locations and angles between the camera and the object from the first and second locations. Then, the control circuit causes the lens to be adjusted to bring the object into focus for subsequent images. 1. A control circuit comprising:an object detection unit; anda distance estimation unit; receive a first image of a scene captured from a first location;', 'receive, via the one or more sensors, one or more indications of movement subsequent to the first image being captured;', 'receive a second image of the scene captured from a second location;', 'calculate a first distance between the first location and the second location based on the one or more indications of the movement;', 'calculate a second distance to an object in the scene from the second location based on the first distance and based on angles between the first and second locations and the object; and', 'cause a lens position to be adjusted to bring the object into focus based on the second distance., 'wherein the control circuit is configured to2. The control circuit as recited in claim 1 , wherein the lens position is adjusted without a user pressing a shutter button to capture an image.3. The control circuit as recited in claim 1 , wherein the second distance is an estimate of a ...

LIGHT RADIATING DEVICE

A light radiating device includes an optical element held at a desired position by a holder and configured to exhibit desired optical performance based on incoming light entered at the desired position, a detector configured to detect an amount of positional deviation of the optical element relative to the desired position, and a discrimination unit configured to discriminate whether the light radiating device is in a normal state or an abnormal state based on the detected amount of positional deviation. The normal state is a state where the optical element exhibits the desired optical performance by being disposed at the desired position. The abnormal state is a state where the optical element is disposed at a position deviating from the desired position. 1. A light radiating device comprising:an optical element held at a desired position by a holder and configured to exhibit desired optical performance based on incoming light entered at the desired position;a detector configured to detect an amount of positional deviation of the optical element relative to the desired position; anda discrimination unit configured to discriminate whether the light radiating device is in a normal state or an abnormal state based on the detected amount of positional deviation, the normal state being a state where the optical element exhibits the desired optical performance by being disposed at the desired position, and the abnormal state being a state where the optical element is disposed at a position deviating from the desired position.2. The light radiating device according to claim 1 , whereinthe detector detects, as the amount of positional deviation, a translation movement amount in a first direction among directions defined by a surface of the optical element.3. The light radiating device according to claim 2 , whereinthe first direction is a direction in which the optical performance most sensitively changes as compared with the directions other than the first direction.4. ...

3d sensing technology based on multiple structured illumination

Various embodiments can measure a distance of an object. For achieving this, a first light source and a second light source can be configured to emit first light and a second light toward the object to illuminate the object. The emission of the first light and second light can be configured such that the two lights converge at a first point and diverge at a second point. An optical sensor can be used to capture a first image of the object illuminated by the first light, and capture a second image of the object illuminated by the second light. An image difference between the first image and the second image of the object can be determined. The distance of the object with respect to the first point can then be determined based on the image difference and a distance difference between the first point and the second point.

ARTICLE RECOGNITION DEVICE

According to one embodiment, an article recognition device includes a storage unit, an image interface, a distance information interface, and a processor. The storage unit stores outline information indicating an outline of an article. The image interface acquires a captured image. The distance information interface acquires distance information from a distance sensor. The processor recognizes a first article from the captured image, specifies an article area in which the first article appears from the captured image based on the outline information, acquires an article area distance between a surface of the first article and the installation base on which the first article is placed, which appear in the captured image, based on the distance information, and determines whether the first article is disposed overlapping a second article based on the outline information and the article area distance. 1. An article recognition device , comprising:a storage unit for storing outline information indicating an outline of an article;an image interface for acquiring a captured image of the article;a distance information interface for acquiring distance information from a distance sensor; anda processor configured to:recognize a first article from the captured image;specify an article area in which the first article appears from the captured image based on the outline information;acquire an article area distance between a surface of the first article and an installation base on which the first article is positioned, which appear in the captured image, based on the distance information; anddetermine whether the first article overlaps a second article based on the outline information and the article area distance.2. The device according to claim 1 , whereinthe processor is further configured to:extract feature point information from the captured image;recognize the first article based on the feature point information; andspecify the article area based on a position of a feature ...

Light emitting device

Light with a short pulse width is emitted using a simple structure. A light source 101 , a differentiation circuit 102 , and a switch 103 are connected in series. When the switch 103 is switched on, inrush current flows in a capacitor 102 b forming the differentiation circuit 102 , and accordingly the light source 101 is supplied with electric current and thereby emits light. When the capacitor 102 b is charged, electric current flows in a resistor 102 a , and voltage drops at the resistor 102 a . Then, the voltage applied to the light source 101 is decreased, whereby the light source 101 stops emitting light. By using the inrush current at the capacitor 102 b , light with a short pulse width can be generated.

Image processing device and image capture apparatus

According to one embodiment, an image processing device includes a hardware processor implemented by one or more processors, The hardware processor is configured to acquire an image captured by a monocular camera. The hardware processor is configured to estimate a distance to an object based on the acquired image. The hardware processor is configured to calculate the distance to the object by considering an atmosphere failure influencing the acquired image and executing a statistical process on the estimated distance.

Optical personal Locating device

The present disclosure is a locating device using light to locate other similar devices in a given place with respect to each other where other techniques are not possible to be used. The present disclosure presents a first communication device comprising a light receiving unit, wherein said first communication device is configured to generate a code, transmit said code, and receive a pulse signal from a second communication device. The first communication device is configured to communicate through a network with said second communication device, wherein said second communication device is configured to receive said code, transmit the pulse signal based on said code and modulate the light emitted by a light emitting source. 1. An optical locating system comprising:a network;a first communication device comprising a light receiving unit and a first computer platform including a first processor and a first set of machine-readable instructions wherein said first set of machine-readable instructions are configured to generate a code, transmit said code, and receive a pulse signal;a second communication device comprising a light emitting source, a pulse emitting generator, and a second computer platform including a second processor and a second set of machine-readable instructions;wherein said first communication device is configured to communicates through a network with said second communication device; andwherein said second set of machine-readable instructions is configured to receive said transmitted code, transmit the pulse signal based on said code and modulate the light emitted by the light emitting source.2. The optical locating system of wherein said first communication device comprises a pulse frequency decoder and a display unit claim 1 , wherein the first set of machine-readable instructions is configured to receive said pulse signal using said light receiving unit claim 1 , decode said pulse signal and display an image at the display unit based on the ...

Apparatus and Method for Determining Reference Elements of an Environment

A method for determining reference elements of an environment, the method comprising at least the steps of: providing a ceiling value and a floor value; measuring, using a distance-measuring sensor, a set of environment point positions, each position comprising at least a first coordinate along a first direction and a second coordinate along a second direction non collinear with the first direction; determining reference elements of the environment comprising position of the set of environment point positions whose second coordinate is strictly smaller than the ceiling value and strictly higher than the floor value, and whose distance to the distance-measuring sensor, taken along the first direction, is a highest distance in a set of distances of environment points to the distance-measuring sensor, said distances being taken along the first direction. 1. A method for determining reference elements of an environment , the method comprising at least the steps of:providing a ceiling value and a floor value;measuring, using a distance-measuring sensor, a set of environment point positions, each of said positions comprising at least a first coordinate along a first direction and a second coordinate along a second direction non collinear with the first direction;determining reference elements of the environment comprising a set of reference environment point positions, said set comprising at least one position from the set of environment point positionswhose second coordinate is strictly smaller than the ceiling value and strictly higher than the floor value, andwhose distance to the distance-measuring sensor, taken along the first direction, is a highest distance in a set of distances of distances of environment points to the distance-measuring sensor, said distances being take along the first direction.2. The method of claim 1 , wherein the first and the second directions are perpendicular claim 1 , said second direction corresponding to a vertical direction of the ...

DRIVING CONTROL SYSTEM AND DRIVING CONTROL METHOD

An imaging device includes a pixel. The pixel includes: a first electrode; a second electrode facing the first electrode; a photoelectric conversion layer between the first electrode and the second electrode, the photoelectric conversion layer converting light into signal charge; and a charge accumulation region coupled to the second electrode, the charge accumulation region accumulating the signal charge. The pixel captures first data in a first exposure period and captures second data in a second exposure period different from the first exposure period, the first exposure period and the second exposure period being included in a frame period. A length of the first exposure period is different from a length of the second exposure period. The imaging device generates multiple-exposure image data including at least the first data and the second data. 1. An imaging device comprising: a first electrode;', 'a second electrode facing the first electrode;', 'a photoelectric conversion layer between the first electrode and the second electrode, the photoelectric conversion layer converting light into signal charge; and', 'a charge accumulation region coupled to the second electrode, the charge accumulation region accumulating the signal charge, wherein, 'a pixel includingthe pixel captures first data in a first exposure period and captures second data in a second exposure period different from the first exposure period, the first exposure period and the second exposure period being included in a frame period,a length of the first exposure period is different from a length of the second exposure period, andthe imaging device genetates multiple-exposure image data including at least the first data and the second data.2. The imaging device according to claim 1 , further comprising voltage control circuitry that supplies a first voltage to the first electrode in the first exposure period and supplies a second voltage to the first electrode in the second exposure period.3. The ...

X-RAY IMAGING APPARATUS AND CONTROL METHOD THEREOF

An X-ray imaging apparatus and control method thereof to prevent an error in the center of rotation of an X-ray source and degradation of resolution in a depth direction. The X-ray imaging apparatus comprises an X-ray source configured to irradiate X-rays, a sensor configured to obtain a distance between the X-ray source and a subject, a display configured to display a graphical object in association with the subject, an input configured to receive a designation of a region of interest of the subject through the graphical object, and a controller configured to obtain a thickness of the subject based on the distance between the X-ray source and the subject, determine a center of rotation to be set for the X-ray source based on the designation of the region of interest and the thickness of the subject, and control a movement of the X-ray source to set the center of rotation. 1. An X-ray imaging apparatus comprising:an X-ray source configured to irradiate X-rays;a sensor configured to obtain a distance between the X-ray source and a subject;a display configured to display a graphical object in association with the subject;an input configured to receive a designation of a region of interest of the subject through the graphical object displayed on the display; anda controller configured to obtain a thickness of the subject based on the distance obtained between the X-ray source and the subject, determine a center of rotation to be set for the X-ray source based on the designation of the region of interest of the subject received through the input and the thickness of the subject obtained, and control a movement of the X-ray source to set the determined center of rotation of the X-ray source.2. The X-ray imaging apparatus of claim 1 , wherein the sensor comprises at least one of a stereo camera claim 1 , a single camera claim 1 , a depth camera claim 1 , a photo sensor claim 1 , an ultrasonic sensor claim 1 , and a laser sensor.3. The X-ray imaging apparatus of claim 1 , ...

Video monitoring system

A asset tracking system includes a camera adapted to capture images and output signals representative of the images. The camera may include one or more depth sensors that detect distances between the depth sensor and objects positioned within the field of view of the one or more cameras. A computer device processes the image signals and or depth signals from cameras and determines any one or more of the following: (a) whether a patient care protocol has been properly followed; (b) what condition a patient is in; (c) whether an infection control protocol has been properly followed; and (d) whether steps have been taken to reduce the risk of a patient from falling. Alerts may be issued if any conditions of importance are detected.

Semiconductor manufacturing apparatus and manufacturing method of semiconductor device

A semiconductor manufacturing apparatus according to an embodiment includes: a stage to have a plurality of pins to hold a semiconductor substrate having a first surface on which a film to be etched is formed and a second surface positioned on an opposite side to the first surface; a nozzle to eject a liquid chemical toward the first surface of the semiconductor substrate from above the stage; and an optical measurer to radiate light toward the second surface of the semiconductor substrate from a side of the stage during ejection of the liquid chemical, and to measure a displacement amount of the semiconductor substrate based on a state of reception of light reflected on the second surface.

TREAD DEPTH MEASUREMENT

A method of generating a three-dimensional topological surface representation of a tyre on a vehicle, the method comprising: using a tread depth measurement device to record tread depth data for a tyre surface moving relative to the tread depth measurement device; generating a movement profile of the tyre surface; and using the movement profile of the tyre surface to map the tread depth data onto a base tyre structure, thereby generating a three-dimensional topological surface representation of the tyre. 1. A method of generating a three-dimensional topological surface representation of a tyre on a vehicle , the method comprising:using a tread depth measurement device to record tread depth data for a tyre surface moving relative to the tread depth measurement device;generating a movement profile of the tyre surface; andusing the movement profile of the tyre surface to map the tread depth data onto a base tyre structure, thereby generating a three-dimensional topological surface representation of the tyre.2. The method as claimed in claim 1 , comprising recording the tread depth data as the vehicle moves towards or away from the tread depth measurement device.3. The method as claimed in claim 1 , wherein the movement profile comprises or is derived from a trace defined by a set of data representing the positions at given times traced by a part of the tyre surface as the tyre is moving.4. The method as claimed in claim 3 , comprising discarding portions of the trace corresponding to one of more of: tread grooves claim 3 , sipes and tyre shoulders.5. The method as claimed in claim 3 , comprising one or more of: filtering noise from the trace; smoothing the trace; and using spline interpolation to remove discontinuities in the trace.6. (canceled)7. (canceled)8. The method as claimed in claim 3 ,comprising obtaining a plurality of traces, each corresponding to a respective position on the tyre surface.9. The method as claimed in claim 8 , comprising extrapolating one or ...

ELECTRONIC APPARATUS, CONTROL METHOD THEREOF AND COMPUTER READABLE STORAGE MEDIUM

An electronic apparatus, comprises a projection unit configured to project an image, a measurement unit configured to measure a distance to an object, a projection control unit configured to control, based on the distance to the object measured by the measurement unit, projection of the image by the projection unit so that the image projected onto the object has a preliminarily set actual size length. 1. An electronic apparatus , comprising:at least one memory storing a program; andone or more processors which, by executing the program, function as:an obtaining unit configured to obtain a distance to an object; anda projection control unit configured to control, based on the distance to the object obtained by the obtaining unit, projection of an image by a projector so that the image projected onto the object has a preliminarily set size regardless of the distance to the object obtained by the obtaining unit.2. The apparatus according to claim 1 , wherein the image projected onto the object has a preliminary set actual size length.3. The apparatus according to claim 1 , wherein the image projected onto the object has a line segment or a predetermined shape.4. The apparatus according to claim 1 , wherein the one or more processors claim 1 , by executing the program claim 1 , further functions as a setting unit configured to cause a user to set an actual size length of the line segment or shape.5. The apparatus according to claim 1 , wherein the obtaining unit is configured to calculate a distance to the object based on an optical or audio signal emitted toward the object.6. The apparatus according to claim 1 , further comprising the projector.7. The apparatus according to claim 1 , wherein the projection control unit controls the projection of the image projected by the projector based on a position claim 1 , specified by a user claim 1 , of an image on a display.8. The apparatus according to claim 7 , further comprising the display.9. The apparatus according to ...

MEASUREMENT SYSTEM USED FOR CALIBRATING MECHANICAL PARAMETERS OF ROBOT

A measurement system able to perform measurement by a simpler manner when performing measurement a plurality of times for a plurality of targets. The measurement system utilizes the light receiving device to measure targets fastened to the machine tool. The robot is moved so that the difference between a target on a light receiving surface of the light receiving device and an image acquired by the light receiving device in the state where the machine tool is stopped at each stop position and the robot is placed in the measurement position and posture becomes within a predetermined error. A plurality of stop positions and a plurality of end point positions and postures after the movement are used as the basis to simultaneously find the error of the mechanical parameters of the robot and the relative relationship between the robot coordinate system Σb and the machine tool coordinate system Σm. 1. A measurement system comprising:a multi-articulated robot including a light receiving device at a front end of an arm; anda machine tool that is provided inside a range of operation of the robot and utilizes the light receiving device to measure a target fastened to the machine tool, whereinthe target has a geometric feature enabling identification of information on a position of an image of the target formed on a light receiving surface of the light receiving device and information on a length relating to a distance between the light receiving device and the target, andthe measurement system further comprises:a measurement position/posture determining part determining a plurality of stop positions of the machine tool and a plurality of measurement positions and postures of the robot whereby when the machine tool is at the plurality of stop positions, the target is included in a field of vision of the light receiving device,a positioning part successively positioning the machine tool at the plurality of stop positions and successively positioning the robot at the plurality of ...

A METHOD OF MEASURING THE THICKNESS OF A FIBER TEXTURE WOUND ONTO AN IMPREGNATION MANDREL, AND A WINDER MACHINE IMPLEMENTING SUCH A METHOD

A method of measuring the thickness of a fiber texture wound on an impregnation mandrel for fabricating an annular structural part of a turbine engine out of composite material, the method including, prior to winding the fiber texture, acquiring a reference distance between an outside surface of the impregnation mandrel and a distance sensor positioned facing the outside surface of the impregnation mandrel, while winding the fiber texture, acquiring at least one real distance between the distance sensor and the outside surface of the fiber texture wound on the impregnation mandrel, and calculating the real thickness of the fiber texture wound on the impregnation mandrel by subtracting the real distance from the reference distance. 1. A method of measuring a thickness of a fiber texture wound on an impregnation mandrel for fabricating an annular structural part of a turbine engine out of composite material , the method comprising:prior to winding the fiber texture on the impregnation mandrel, acquiring a reference distance between an outside surface of the impregnation mandrel and a distance sensor positioned facing said outside surface of the impregnation mandrel;while winding the fiber texture on the impregnation mandrel, acquiring at least one real distance between the distance sensor and the outside surface of the fiber texture wound on impregnation mandrel; andcalculating a real thickness of the fiber texture wound on the impregnation mandrel by subtracting the real distance from the reference distance.2. A method according to claim 1 , wherein the reference distance and the real distance are averages calculated from measurements taken by at least three distance sensors positioned facing the outside surface of the impregnation mandrel and in alignment along an axis parallel to an axis of rotation of the impregnation mandrel.3. A method according to claim 1 , wherein the reference distance and the real distance comprise independent values obtained from ...

DEVICE FOR IN-SITU OBSERVATION OF APPARENT SPECTRUM OF WATER BODY

The present invention relates to a system for in-situ measurement of an apparent spectrum of a water body. The system comprises a floating device, and an optical sensing and conduction device, an electronic measurement device, a control circuit and a power supply device which are loaded on the floating device. The floating device comprises a floating body ring and an optical probe mounting frame which is provided on the floating body ring in a direction perpendicular to a ring surface. The optical probe mounting frame comprises a vertical mounting assembly and a horizontal connecting assembly. The horizontal connecting assembly is provided radially along the ring shape of the floating body ring, one end of the horizontal connecting assembly being connected to the vertical mounting assembly, and the other end thereof being connected to the floating body ring, such that the vertical mounting assembly is overhung outside the ring surface of the floating body ring, and meanwhile a vertical projection of the vertical mounting assembly is located in the center of the ring surface. A ratio of an inner diameter to an outer diameter of the floating body ring is 0.80 to 0.85. The floating body ring is provided with a water-tight cavity which provides flotage for the whole floating device and used for loading a necessary electronic device and a necessary power supply assembly. An optical probe is vertically mounted on the optical probe mounting frame. The device for in-situ observation of the apparent spectrum of the water body disclosed by the present invention may be used for directly measuring a water-leaving radiance Lof the water body, and can furthest reduce the method defects, personal errors and device errors. The precision of a remote sensing reflectivity Rfinally observed of the water body is improved remarkably, and the operations are simple. 1. A floating device for optical observation of a water body , comprising a floating body ring and an optical probe mounting ...

OPTICAL SYSTEMS AND METHODS FOR MEASURING TURBINE BLADE TIP CLEARANCE

A blade tip measurement system includes a case and a blade that rotates within the case, the blade having an outer blade tip surface that has a clearance distance from an inner surface of the case. A light source emits light along an optical path that is directed toward the outer blade tip surface by a lens, and the outer blade tip surface reflects the light back along the optical path. An optical interferometer generates an interference pattern using the reflected light, and a photoreceiver receives the interference pattern. A complex logic device determines the clearance distance of the blade tip surface from the inner surface of the case based on the interference pattern. The interferometer may be a Fabry-Perot optical interferometer formed using a window positioned between the lens and the blade tip surface, or a Michelson interferometer formed using a reference optical path. The system may alternatively include an optical time of flight measurement of the blade tip clearance. The system further may include an abradable substrate having an optical fiber array of optical fibers at different depths, whereby the blade tip clearance is determinable based on which of the optical fibers are abraded as the blade tip rotates. 2. The blade tip measurement system of claim 1 , further comprising a window claim 1 , wherein the lens directs the light through the window toward the outer blade tip surface and the outer blade tip surface reflects the light back through the window; andwherein the optical interferometer comprises a Fabry-Perot optical interferometer including multiple optical cavities formed by surfaces of the window and the outer blade tip surface, such that the reflected light creates an interference pattern with the light from the light source.3. The blade tip measurement system of claim 2 , wherein the multiple optical cavities include a first optical cavity between a blade side inner window surface and an outer window surface opposite from the inner window ...

LIGHT PROJECTION METHOD AND LIGHT PROJECTION DEVICE

A light projection method with safety protection and a light projection device with safety projection. The light projection method () comprises: turning on a light source at a safe power level (S); using a diffractive optical element to modulate light emitted from the light source so as to project a pattern onto a target surface (S); acquiring the pattern (S); determining whether the pattern is normal (S); and if so, turning on the light source at a rated power level, wherein the rated power level is higher than the safe power level (S). The invention enables an optical system to have a smaller size while ensuring safety of a user, simplifies a structure, reduces costs, and facilitates efficient utilization of optical energy. 1. A light projection method with safety protection , comprising:turning on a light source at a safe power level;using a diffractive optical element to modulate light emitted from the light source so as to project a pattern onto a target surface;acquiring the pattern; anddetermining whether the pattern is normal and if the pattern is normal, turning on the light source at a rated power level.2. The light projection method according to claim 1 , further comprising: turning off the light source if the pattern is abnormal claim 1 , wherein the light source is preferably a laser light source claim 1 , and the rated power level is preferably higher than the safe power level.3. The light projection method according to claim 1 , further comprising: calculating the safe power level based on a distance between the light source or the diffractive optical element and the target surface.4. The light projection method according to claim 1 , further comprising: determining that a fault lies in the light source and/or the diffractive optical element if the pattern is abnormal.5. The light projection method according to claim 1 , wherein the light source is configured to emit divergent light of nonplanar waves claim 1 , and the diffractive optical element is ...

TERAHERTZ MEASURING DEVICE AND METHOD OF OPERATING A TERAHERTZ MEASURING DEVICE

A measuring device comprises a Terahertz, THz, transmitter configured to emit a THz signal to an object to be measured and a THz receiver configured to receive a reflected portion of said THz signal that has been reflected by said object. The said THz transmitter and said THz receiver are arranged in a measuring head of said measuring device. The measuring device may vary a distance between said measuring head and said object to be measured, emit, by means of said THz transmitter, said THz signal to said object to be measured, receive said reflected portion of said THz signal, and determine a first parameter characterizing a detected signal proportional and/or related to said received reflected portion of said THz signal. 120-. (canceled)21. A method of operating a measuring device comprising a Terahertz , THz , transmitter configured to emit a THz signal (TS) to an object to be measured and a THz receiver configured to receive a reflected portion (TSR) of said THz signal (TS) that has been reflected by said object , wherein said THz transmitter and said THz receiver are arranged in a measuring head of said measuring device , said method comprising: 'for a plurality of distance values (dv) of said distance (d) between said measuring head and said object to be measured, wherein the plurality of distance values (dv) are within a predetermined first range: determining and storing said distance values (dv), determining and storing first reference measurement information characterizing a received reflected portion (TSR) of said THz signal (TS) associated with said at least one distance value (dv); and/or', 'A) varying a distance (d) between said measuring head and said object to be measured, emitting, by said THz transmitter, said THz signal (TS) to said object to be measured, receiving said reflected portion (TSR) of said THz signal (TS), and determining a first parameter characterizing a detected signal proportional and/or related to said received reflected portion ( ...

Autonomous driving module, mobile robot including the same, and position estimation method thereof

An autonomous driving module included in a mobile robot includes a distance sensor configured to shoot a signal toward a floor every predetermined time and measure the time it takes for the signal to be reflected and returned to generate a plurality of pieces of height information. A light source is configured to emit light toward the floor, and a camera is configured to capture the floor every predetermined time to generate a plurality of floor images. The autonomous driving module includes a processor configured to execute instructions and a memory configured to store the instructions. The instructions are implemented to synchronize the plurality of pieces of height information with the plurality of floor images, and remove a region generated by reflection of the light source from the synchronized floor images.

Estimating distance to an object using a sequence of images recorded by a monocular camera

A method for monitoring headway to an object performable in a computerized system including a camera mounted in a moving vehicle. The camera acquires in real time multiple image frames including respectively multiple images of the object within a field of view of the camera. An edge is detected in in the images of the object. A smoothed measurement is performed of a dimension the edge. Range to the object is calculated in real time, based on the smoothed measurement.

DISPLAY APPARATUS, DISPLAY SYSTEM, AND METHOD FOR CONTROLLING DISPLAY APPARATUS

A display apparatus includes a display section that projects and displays an image on a display surface, an imaging section that captures an image of the display surface, a measurement section that measures the distance between the display surface and the display section, and a calibration processor that causes the display section to display a calibration image containing a position detection mark based on the distance measured by the measurement section, causes the imaging section to capture an image of the calibration image displayed on the display surface, and performs calibration that associates coordinates on the image with coordinates on the captured image captured by the imaging section based on the captured image. 1. A display apparatus comprising:a display section that projects and displays an image on a display surface;an imaging section that captures an image of the display surface;a measurement section that measures a distance between the display surface and the display section; anda calibration processor that causes the display section to display a calibration image containing a position detection mark based on the distance measured by the measurement section, causes the imaging section to capture an image of the calibration image displayed on the display surface, and performs calibration that associates a position on the image with a position on a first captured image captured by the imaging section based on the first captured image.2. The display apparatus according to claim 1 ,wherein the display section includes a light source used to project the image, andthe calibration processor lowers luminance of light from the light source as the distance measured by the measurement section decreases.3. The display apparatus according to claim 1 ,further comprising an image generator that generates image information on the calibration image based on the distance measured by the measurement section,wherein the calibration processor causes the display section to ...

Adaptive transmission power control for a LIDAR

An electro-optical device includes a laser, which is configured to emit toward a scene pulses of optical radiation. An array of detectors are configured to receive the optical radiation that is reflected from points in the scene and to output signals indicative of respective times of arrival of the received radiation. A controller is coupled to drive the laser to emit a sequence of pulses of the optical radiation toward each of a plurality of points in the scene and to find respective times of flight for the points responsively to the output signals, while controlling a power of the pulses emitted by the laser by counting a number of the detectors outputting the signals in response to each pulse, and reducing the power of a subsequent pulse in the sequence when the number is greater than a predefined threshold. 1. An electro-optical device , comprising:a laser, which is configured to emit toward a scene pulses of optical radiation;an array of detectors, which are configured to receive the optical radiation that is reflected from points in the scene and to output signals indicative of respective times of arrival of the received radiation; anda controller, which is coupled to drive the laser to emit a sequence of pulses of the optical radiation toward each of a plurality of points in the scene and to find respective times of flight for the points responsively to the output signals, while controlling a power of the pulses emitted by the laser by counting a number of the detectors outputting the signals in response to each pulse, and reducing the power of a subsequent pulse in the sequence when the number is greater than a predefined threshold.2. The electro-optical device according to claim 1 , wherein the detectors are single-photon detectors.3. The electro-optical device according to claim 2 , wherein the single-photon detectors are single-photon avalanche detectors (SPADs).4. The electro-optical device according to claim 1 , wherein the controller is configured to ...

DISTANCE MEASUREMENT APPARATUS

A distance measurement apparatus includes: a TOF camera having a light-emitting unit , a light-receiving unit , and a distance-calculating unit to measure a distance to the subject on the basis of light transmission time; and an image processing unit that creates a distance image of the subject from distance data measured by the TOF camera . The image processing unit determines whether or not there is a detection target in the created distance image. If there is no detection target in the distance image, the light emission intensity control unit decreases the emitted light intensity from the light source of the light-emitting unit , and the operation mode is switched to a power saving mode in which the pixel addition control unit increases an addition ratio of a neighboring pixel signal of the light-receiving unit 1. A distance measurement apparatus that measures a distance to a subject to output a distance image , comprising:a distance measurement unit having a light-emitting unit, a light-receiving unit, and a distance-calculating unit to measure a distance to the subject on the basis of light transmission time;an image processing unit that creates a distance image of the subject from distance data measured by the distance measurement unit;a light emission intensity control unit that controls an emitted light intensity from a light source of the light-emitting unit; anda pixel addition control unit that controls an addition process for a pixel signal from a neighboring pixel in the light-receiving unit,wherein the image processing unit determines whether or not there is a detection target in the created distance image,a high definition mode, in which the light emission intensity control unit increases the emitted light intensity of the light-emitting unit, and the pixel addition control unit decreases an addition ratio of the neighboring pixel signal of the light-receiving unit, is set if there is the detection target in the distance image, anda power saving mode, ...

METHOD, DEVICE, APPARATUS AND STORAGE MEDIUM FOR DETECTING A HEIGHT OF AN OBSTACLE

A method, device, apparatus and a computer-readable storage medium for detecting a height of an obstacle are provided. The method can include: acquiring observation data of a plurality of reference obstacles from a frame; for each reference obstacle, determining a first evaluation value of the height of the obstacle to be detected, according to the observation data of the reference obstacle, an observed height of the obstacle to be detected in a frame, an actual height of the reference obstacle, and a distance between a bottom of the obstacle to be detected in the frame and an optical axis of a camera capturing the frame; and determining a second evaluation value of the height of the obstacle to be detected by using a plurality of first evaluation values for the plurality of reference obstacles. 1. A method for detecting a height of an obstacle , comprising:acquiring observation data of a plurality of reference obstacles from a frame;for each reference obstacle, determining a first evaluation value of the height of the obstacle to be detected, according to the observation data of the reference obstacle, an observed height of the obstacle to be detected in a frame, an actual height of the reference obstacle, and a distance between a bottom of the obstacle to be detected in the frame and an optical axis of a camera capturing the frame, wherein the observation data of the reference obstacle comprises an observed height of the reference obstacle in the frame and a distance between a bottom of the reference obstacle in the frame and the optical axis of the camera; anddetermining a second evaluation value of the height of the obstacle to be detected by using a plurality of first evaluation values for the plurality of reference obstacles.3. The method according to claim 1 , wherein determining a second evaluation value of the height of the obstacle to be detected by using a plurality of first evaluation values for the plurality of reference obstacles comprises:acquiring a ...