Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 13. Отображено 11.
08-11-2016 дата публикации

Flat field correction for infrared cameras

Номер: US0009491376B2
Автор: Joseph L. Kostrzewa, Vu L. Nguyen, Theodore R. Hoelter, KOSTRZEWA JOSEPH L, NGUYEN VU L, HOELTER THEODORE R, Kostrzewa Joseph L., Nguyen Vu L., Hoelter Theodore R.
Принадлежит: FLIR Systems, Inc., FLIR SYSTEMS

Various techniques are provided to perform flat field correction for infrared cameras. In one example, a method of calibrating an infrared camera includes calibrating a focal plane array (FPA) of the infrared camera to an external scene to determine a set of flat field correction values associated with a first optical path from the external scene to the FPA. The method also includes estimating a temperature difference between the FPA and a component of the infrared camera that is in proximity to the first optical path. The method also includes determining supplemental flat field correction values based on, at least in part, the first set of flat field correction values, where the supplemental flat field correction values are adjusted based on the estimated temperature difference before being applied to thermal image data obtained with the infrared camera. The method also includes storing the supplemental flat field correction values.

Подробнее
Номер записи: 1
20-02-2018 дата публикации

Techniques to compensate for calibration drifts in infrared imaging devices

Номер: US0009900526B2
Автор: Joseph Kostrzewa, Vu L. Nguyen, Theodore R. Hoelter, Nicholas Högasten, Mark Nussmeier, Eric A. Kurth, Katrin Strandemar, Pierre Boulanger, Barbara Sharp, KOSTRZEWA JOSEPH, NGUYEN VU L, HOELTER THEODORE R, HOEGASTEN NICHOLAS, NUSSMEIER MARK, KURTH ERIC A, STRANDEMAR KATRIN, BOULANGER PIERRE, SHARP BARBARA, Kostrzewa Joseph, Nguyen Vu L., Hoelter Theodore R., Högasten Nicholas, Nussmeier Mark, Kurth Eric A., Strandemar Katrin, Boulanger Pierre, Sharp Barbara
Принадлежит: FLIR Systems, Inc., FLIR SYSTEMS

Various techniques are provided to compensate for and/or update ineffective (e.g., stale) calibration terms due to calibration drifts in infrared imaging devices. For example, a virtual-shutter non-uniformity correction (NUC) procedure may be initiated to generate NUC terms to correct non-uniformities when appropriate triggering events and/or conditions are detected that may indicate presence of an object or scene to act as a shutter (e.g., a virtual shutter). Scene-based non-uniformity correction (SBNUC) may be performed during image capturing operations of the infrared imaging device, for example, when a virtual-shutter scene is not available. Further, snapshots of calibration data (e.g., NUC terms) produced during the virtual-shutter NUC procedure, the SBNUC process, and/or other NUC process may be taken. Such snapshots may be utilized to provide useful NUC data when the infrared imaging device starts up or is otherwise reactivated, so that the SBNUC or other NUC methods may produce effective results soon after the start-up. Such snapshots may also be utilized to update ineffective calibration terms.

Подробнее
Номер записи: 2
15-12-2016 дата публикации

INTEGRATED SWITCH AND SHUTTER FOR CALIBRATION AND POWER CONTROL OF INFRARED IMAGING DEVICES

Номер: US20160366349A1
Автор: Vu L. Nguyen, NGUYEN VU L, Nguyen Vu L.
Принадлежит: Flir Systems Inc

Various devices including a three-stage switch and an infrared (IR) imaging module and methods for performing FFC using the three-stage switch and the IR imaging module are provided. The three-stage switch may have at least a first position in which the IR imaging module is powered off, a second position in which the IR imaging module is powered on and the shutter is positioned in the FOV, and a third position in which the IR imaging module is powered on and the shutter is positioned out of the FOV, wherein the second position is intermediate in relation to the first position and the third position. A thermal image of the shutter may be captured while the switch is at or adjacent to the second position, and an FFC map of FFC terms may be acquired based on the thermal image of the shutter.

Подробнее
Номер записи: 3
06-07-2017 дата публикации

MODULAR SPLIT-PROCESSING INFRARED IMAGING SYSTEM

Номер: US20170195584A1
Автор: Joseph Kostrzewa, Bruce Covington, Chris Posch, Wayne Patterson, Charles Handley, Dan Walker, Vu L. Nguyen, KOSTRZEWA JOSEPH, COVINGTON BRUCE, POSCH CHRIS, PATTERSON WAYNE, HANDLEY CHARLES, WALKER DAN, NGUYEN VU L, Kostrzewa Joseph, Covington Bruce, Posch Chris, Patterson Wayne, Handley Charles, Walker Dan, Nguyen Vu L.
Принадлежит:

Various techniques are provided to implement a modular infrared imager assembly configured to interface with supporting electronics provided, for example, by a third party. In one example, a system includes an imager assembly comprising a focal plane array configured to capture thermal image data from a scene and output the thermal image data, a printed circuit board assembly, and processing electronics communicatively connected to the focal plane array through the printed circuit board assembly and configured to receive and process the thermal image data. The system further includes a connector communicatively connected to the imager assembly and configured to interface with supporting electronics configured to receive and additionally process the thermal image data. 1. A system comprising: a focal plane array configured to capture thermal image data from a scene and output the thermal image data,', 'a printed circuit board assembly, and', 'processing electronics communicatively connected to the focal plane array through the printed circuit board assembly and configured to receive and process the thermal image data; and, 'an imager assembly comprisinga connector communicatively connected to the imager assembly and configured to interface with supporting electronics configured to receive and additionally process the thermal image data.2. The system of claim 1 , wherein the imager assembly is configured to modularly interface with the supporting electronics provided by a third party and configured to perform third party-specific image processing.3. The system of claim 1 , wherein the processing electronics is further configured to calibrate the focal plane array.4. The system of claim 1 , wherein the processing electronics is further configured to control the focal plane array.5. The system of claim 1 , further comprising the supporting electronics connected to the imager assembly through the connector.6. The system of claim 5 , wherein the processing electronics and ...

Подробнее
Номер записи: 4
12-10-2017 дата публикации

ANALYTE SPATIAL DETECTION SYSTEMS AND METHODS

Номер: US20170292917A1
Автор: Brian D. O'Dell, Robert K. Shelton, Vu L. Nguyen, O'DELL BRIAN D, SHELTON ROBERT K, NGUYEN VU L, O'Dell Brian D., Shelton Robert K., Nguyen Vu L.
Принадлежит:

Techniques are disclosed for systems and methods to provide reliable analyte spatial detection systems. An analyte spatial detection system includes an imaging module, a visible light projector, associated processing and control electronics, and, optionally, orientation and/or position sensors integrated with the imaging module and/or the visible light projector. The imaging module includes sensor elements configured to detect electromagnetic radiation in one or more selected spectrums, such as infrared, visible light, and/or other spectrums. The visible light projector includes one or more types of projectors configured project visible light within a spatial volume monitored by the imaging module. The system may be partially or completely portable and/or fixed in place. The visible light projector is used to indicate presence of a detected analyte on a surface near or adjoining the spatial position of the detected analyte. 1. A system comprising:an imaging module configured to image a spatial volume for electromagnetic radiation in at least one selected spectrum;a visible light projector configured to generate visible light and project it within the spatial volume; and receive image data corresponding to the spatial volume from the imaging module;', 'process the received image data to detect a presence and spatial extents of an analyte within the spatial volume; and', 'control the visible light projector to project an analyte indicator on a surface within the spatial volume, wherein the projected analyte indicator is configured to indicate the spatial extents of the analyte., 'a logic device configured to communicate with the imaging module and the visible light projector, wherein the logic device is configured to2. The system of claim 1 , wherein:the at least one selected spectrum comprises infrared;the surface comprises an object surface within the spatial volume and/or an analyte surface of the analyte;the analyte indicator is configured to indicate a physical ...

Подробнее
Номер записи: 5
13-04-2017 дата публикации

CAMERA CORES OR SENSORS FOR PRE-DETERMINED SHOCK/VIBRATION LEVELS

Номер: US20170104931A1
Автор: Vu L. Nguyen, Theodore Hoelter, NGUYEN VU L, HOELTER THEODORE, Nguyen Vu L., Hoelter Theodore
Принадлежит: Flir Systems Inc

Various embodiments of the present disclosure may include an assembly with a shock detection and disabling device. The shock detection and disabling device may detect when a shock greater than a shock threshold has been experienced by the assembly and disable the assembly. In certain embodiments, the shock detection and disabling device may include a shock detection component connected to an electrical conductor to form an electrical circuit. When a force above a threshold force level and/or profile is detected by the shock detection component, the shock detection component may break the electrical circuit to render the assembly inoperable.

Подробнее
Номер записи: 6
13-06-2013 дата публикации

FLAT FIELD CORRECTION FOR INFRARED CAMERAS

Номер: US20130147966A1
Автор: Hoelter Theodore R., Kostrzewa Joseph L., Nguyen Vu L.
Принадлежит: FLIR System, Inc.

Various techniques are provided to perform flat field correction for infrared cameras. In one example, a method of calibrating an infrared camera includes calibrating a focal plane array (FPA) of the infrared camera to an external scene to determine a set of flat field correction values associated with a first optical path from the external scene to the FPA. The method also includes estimating a temperature difference between the FPA and a component of the infrared camera that is in proximity to the first optical path. The method also includes determining supplemental flat field correction values based on, at least in part, the first set of flat field correction values, where the supplemental flat field correction values are adjusted based on the estimated temperature difference before being applied to thermal image data obtained with the infrared camera. The method also includes storing the supplemental flat field correction values. 1. A system , comprising:a focal plane array (FPA) of an infrared camera adapted to capture thermal image data in response to infrared radiation received by the FPA;a memory adapted to store a set of supplemental flat field correction values; and estimate a temperature difference between the FPA and a component of the infrared camera that is in proximity to a first optical path of the infrared camera;', 'determine a scale factor from the estimated temperature difference;', 'apply the scale factor to the set of supplemental flat field correction values; and', 'apply the scaled set of supplemental flat field correction values to the thermal image data to adjust for non-uniformities associated with at least a portion of the first optical path., 'a processor adapted to2. The system of claim 1 , further comprising a shutter located between the FPA and a lens and/or optics block of the infrared camera claim 1 , wherein the processor is adapted to:calibrate the FPA to an external scene to determine a first set of flat field correction values ...

Подробнее
Номер записи: 7
05-04-2018 дата публикации

SYSTEMS AND METHODS FOR ENHANCED DYNAMIC RANGE INFRARED IMAGING

Номер: US20180096468A1
Автор: Boman Magnus, Högasten Nicholas, Lannestedt Tomas, Nguyen Vu L.
Принадлежит:

Various techniques are provided for using one or more thermal infrared (IR) imaging modules to enhance the dynamic range of images. In one example, devices and methods provide a first IR imaging module that captures a first image, a second IR imaging module optimized for higher IR irradiance that captures a second image, and a processing system that detects saturated pixels of the first image, determines pixels of the second image corresponding to the saturated pixels of the first image, and generates a combined image based on non-saturated pixels of the first image and the pixels of the second image. The IR imaging modules may be a microbolometer focal plane array (FPA) configured for high-gain, and a microbolometer FPA configured for low-gain. The IR imaging modules may be a photon detector FPA and a microbolometer FPA. 1. A device , comprising:a first thermal infrared (IR) imaging module configured to capture a first image for a first field of view (FOV);a second thermal IR imaging module configured to capture a second image for a second FOV overlapping, at least in part, with the first FOV, the second thermal IR imaging module optimized for higher thermal IR irradiance than the first thermal IR imaging module; and detect saturated pixels of the first image;', 'determine pixels of the second image corresponding to the saturated pixels of the first image; and', 'generate a combined image based on non-saturated pixels of the first image and the pixels of the second image corresponding to the saturated pixels of the first image., 'a processing system configured to2. The device of claim 1 , wherein the first thermal IR imaging module comprises a first microbolometer focal plane array (FPA) configured for high-gain claim 1 , and wherein the second thermal IR imaging module comprises a second microbolometer FPA configured for low-gain.3. The device of claim 1 , wherein the first thermal IR imaging module comprises a photon detector FPA claim 1 , and wherein the second ...

Подробнее
Номер записи: 8
01-09-2022 дата публикации

Protective member for infrared imaging system with detachable optical assembly

Номер: US20220276486A1
Автор: Vu L. Nguyen
Принадлежит: Teledyne Flir Commercial Systems Inc

Various techniques are provided for protecting an infrared imager of a wafer level package. In one example, a method includes maintaining a protective member in a first position blocking an aperture of a wafer level package of an imaging system to protect an infrared imager disposed within the wafer level package. The method also includes attaching an optical assembly to the imaging system. The method also includes translating the protective member from the first position to a second position in response to a first force applied by the optical assembly against the imaging system during the attaching. The protective member is displaced from the aperture in the second position to expose the aperture to the optical assembly. Additional methods and systems are also provided.

Подробнее
Номер записи: 9
29-10-2015 дата публикации

TECHNIQUES TO COMPENSATE FOR CALIBRATION DRIFTS IN INFRARED IMAGING DEVICES

Номер: US20150312488A1
Автор: Boulanger Pierre, Hoelter Theodore R., Högasten Nicholas, Kostrzewa Joseph, Kurth Eric A., Nguyen Vu L., Nussmeier Mark, Sharp Barbara, Strandemar Katrin
Принадлежит:

Various techniques are provided to compensate for and/or update ineffective (e.g., stale) calibration terms due to calibration drifts in infrared imaging devices. For example, a virtual-shutter non-uniformity correction (NUC) procedure may be initiated to generate NUC terms to correct non-uniformities when appropriate triggering events and/or conditions are detected that may indicate presence of an object or scene to act as a shutter (e.g., a virtual shutter). Scene-based non-uniformity correction (SBNUC) may be performed during image capturing operations of the infrared imaging device, for example, when a virtual-shutter scene is not available. Further, snapshots of calibration data (e.g., NUC terms) produced during the virtual-shutter NUC procedure, the SBNUC process, and/or other NUC process may be taken. Such snapshots may be utilized to provide useful NUC data when the infrared imaging device starts up or is otherwise reactivated, so that the SBNUC or other NUC methods may produce effective results soon after the start-up. Such snapshots may also be utilized to update ineffective calibration terms. 1. A method comprising:receiving image frames of a scene captured by a focal plane array (FPA) of an infrared imaging device;obtaining non-uniformity correction (NUC) terms to reduce at least some of noise introduced by the infrared imaging device, wherein the NUC terms are obtained by processing at least one of the image frames of the scene; andstoring the obtained NUC terms as one or more snapshots of NUC terms.2. The method of claim 1 , further comprising checking whether the stored snapshots are valid or not.3. The method of claim 1 , further comprising selecting claim 1 , upon a startup of the infrared imaging device claim 1 , from one or more snapshots of NUC terms to apply to the image frames captured by the FPA.4. The method of claim 3 , wherein the snapshot is selected based on a temperature associated with the snapshot and/or on recency of the snapshot.5. ...

Подробнее
Номер записи: 10
23-11-2017 дата публикации

Liquid shutter for infrared imaging devices

Номер: US20170336249A1
Автор: Marcel Tremblay, Pierre Boulanger, Robert Pietsch, Theodore R. Hoelter, Vu L. Nguyen
Принадлежит: Flir Systems Inc

Techniques are provided to perform flat field correction for infrared cameras using a liquid shutter. Devices and methods provide a focal plane array (FPA) that receives infrared radiation (e.g., thermal infrared radiation) from a scene, and infrared-opaque liquid disposed in a cavity of a liquid shutter housing, and a fluid controller that directs the liquid from a reservoir area of the cavity to a field of view area of the cavity to block the FPA from the infrared radiation. Flat field correction terms may be determined and radiometric calibration may be performed. In one example, a liquid shutter uses voltages to direct liquid. In another example, a liquid shutter uses magnetic fields from electromagnets to direct liquid such as ferrofluid. In another example, a liquid shutter uses electrowetting techniques to direct liquid such as water. In a further example, a liquid shutter uses a pump.

Подробнее
Номер записи: 11