METHOD FOR ESTIMATING THE OPACITY LEVEL IN A SCENE AND CORRESPONDING DEVICE

The invention relates to a method for estimating the opacity at a point (13) of a scene lit by an area light source (10) and comprising an object (11) defined by a mesh and occluding some of the emitted light. In order to optimize the calculations for live estimation of the opacity, the method comprises the steps of: - sampling of said area light source (10) in a plurality of samples (101, 102, 103), - for at least one sample of the plurality of samples (101, 102, 103) and for at least one first mesh element of the occluding object (11) visible from the at least one sample, generation of one shadow plane per edge of the at least one first mesh element, - estimation of a opacity level depending on coefficients of projection in a function base from values representative of the opacity for a set of intersection points (210, 211, 212) between at least one ray (21) having for origin a viewpoint (20) of the scene and shadow planes crossed by said at least one ray (21), depending on an angle formed ...

MOWER WITH TRANSMISSION OF POWER BY GEARS

View-dependant shading normal adaptation

A method of adjusting a shading normal vector for a computer graphics rendering program. Calculating a normalized shading normal vector pointing outwards from an origin point on a tessellated surface modeling a target surface to be rendered. Calculating a normalized outgoing reflection vector projecting from the origin point for an incoming view vector directed towards the origin point and reflecting relative to the normalized shading normal vector. Calculating a correction vector such that when the correction vector is added to the normalized outgoing reflection vector a resulting vector sum is yielded that is equal to a maximum reflection vector, wherein the maximum reflection vector is on or above the tessellated surface. Calculating a normalized maximum reflection vector by normalizing a vector sum of the correction vector plus the maximum reflection vector. Calculating a normalized adjusted shading normal vector by normalizing a vector difference of the normalized maximum reflection vector minus the incoming view vector.

METHOD FOR ESTIMATING THE OPACITY LEVEL IN A SCENE AND CORRESPONDING DEVICE

A method and device for estimating the opacity at a point of a scene lit by an area light source and comprising an object defined by a mesh and occluding some of the emitted light. In order to optimize the calculations for live estimation of the opacity, the method comprises sampling said area light source in a plurality of samples, for at least one sample of the plurality of samples and for at least one first mesh element of the occluding object visible from the at least one sample, generating one shadow plane per edge of the at least one first mesh element, estimating a opacity level depending on coefficients of projection in a function base from values representative of the opacity for a set of intersection points between at least one ray having for origin a viewpoint of the scene and shadow planes crossed by said at least one ray, depending on an angle formed by the normal associated with each shadow plane crossed and by said at least one ray.

Hedge and Grass Cutter with Electronically Controlled Hydraulic Jacks

A hedge and grass cutter comprises a frame and a cutting head 2 arranged at the end of an articulated arm 3. The hedge and grass cutter is characterized in that the cutting head and the articulated arm are moved in space by means of at least one hydraulic jack 8 the stroke of which is servo-controlled in a closed loop in speed and in position via a proportional control, the at least one hydraulic jack is associated with at least one sensor 9 and a control device for the purpose of electronic management. The electronic management makes possible to determine in real time the position of at least one hydraulic jack actuating the articulated arm. The electronic management allows end-of-travel damping of the hydraulic jack.

A hedge and grass cutter

A hedge and grass cutter comprising a frame (1) having a substantially vertical axis (3) on which is mounted a pivot (4) that can be rotated by a first hydraulic cylinder (5) and on which pivot (4) a tilter element (6)is articulated and a second hydraulic cylinder (8) that is also articulated on the tilter element (6), the latter supporting an articulated arm (11) provided with hedge and grass cutting tool (12). The hydraulic cylinder (8) is mounted to the pivot (4) in such a way that no part of the cylinder (8) protrudes below the bottom edge of the pivot (4). The angle of rotation of the pivot (4) about the substantially vertical axis (3) is greater than 100{ from a position in which the said articulated arm (11) is oriented perpendicular to the direction of travel (A).

METHOD FOR REPRESENTING A PARTICIPATING MEDIA IN A SCENE AND CORRESPONDING DEVICE

The invention relates to a method for rendering a participating media (10) delimited by a bounding box (30) and rendered from a viewpoint (14), the media (10) being at a determined distance from the viewpoint according to a viewing direction. In order to represent the limits of the participating media, the method comprises steps of: - for at least one point (300) of the volume formed by said bounding box (30), estimation of a set of directions (31 to 3i) having for origin said at least one point (300): - for each direction (31 to 3i), estimation of a first intersection point (31m), corresponding to the intersection between said direction and said participating media (10), for which the associated density value is greater than a first threshold value, and - estimation of third intersection points, corresponding to the intersections between said viewing direction and said participating media, from an item of information representative of distances separating the first intersection point ( ...

SPRAYER OR SPREADER BOOM STRUCTURE AND SPRAYER OR SPREADER WITH SUCH A BOOM

A boom structure for spraying or spreading including two side poles each formed of at least one segment, each segment or at least one of the segments of each side pole being composed of an assembly of elongated elements including, firstly, a top longitudinal tube, secondly, at least one bottom longitudinal tube and, lastly, bracing elements, forming tie rods and bridging pieces, extending between the top tube and at least one bottom tube, connecting them. A boom structure wherein each longitudinal tube has at least one radial protuberance, shaped in the longitudinal direction of the relevant tube, and including several openings spaced along the tube, each one constituting a site for securing an end of at least one bracing element. 1. A boom structure for spraying or spreading comprising two side poles each formed of at least one segment , these two side poles being advantageously arranged on both sides of a central segment ,the single segment, each segment or at least one of the segments of each side pole being composed of an assembly of elongated elements comprising, firstly, a top longitudinal tube, secondly, at least one bottom longitudinal tube and, lastly, bracing elements, forming tie rods and bridging pieces, extending between the top tube and said at least one bottom tube, connecting them,wherein each longitudinal tube has at least one radial protuberance, shaped in the longitudinal direction of the relevant tube, and comprising at least one opening, preferably several openings spaced along said tubes, constituting a site for securing an end of at least one bracing element.2. The boom structure according to claim 1 , wherein the protuberance or each shaped protuberance is hollow and has advantageously two portions of opposite flat walls in each of which perforations are made that form openings by cooperation.3. The boom structure according to claim 1 , wherein each shaped protuberance consists of a hollow wing-shaped projection made of a single holder with ...

METHOD FOR REPRESENTING A PARTICIPATING MEDIA IN A SCENE AND CORRESPONDING DEVICE

The invention relates to a method for rendering a participating media (10) delimited by a bounding box (30) and rendered from a viewpoint (14), the media (10) being at a determined distance from the viewpoint according to a viewing direction. In order to represent the limits of the participating media, the method comprises steps of: - for at least one point (300) of the volume formed by said bounding box (30), estimation of a set of directions (31 to 3i) having for origin said at least one point (300): - for each direction (31 to 3i), estimation of a first intersection point (31m), corresponding to the intersection between said direction and said participating media (10), for which the associated density value is greater than a first threshold value, and - estimation of third intersection points, corresponding to the intersections between said viewing direction and said participating media, from an item of information representative of distances separating the first intersection point (31m) from a second intersection point (310) corresponding to the intersection between the direction and the bounding box (30) for each direction of the at least one part of the set of estimated directions (31 to 3i). The invention also relates to a corresponding device.

METHOD FOR ESTIMATING THE OPACITY LEVEL IN A SCENE AND CORRESPONDING DEVICE

The invention relates to a method for estimating the opacity at a point (13) of a scene lit by an area light source (10) and comprising an object (11) defined by a mesh and occluding some of the emitted light. In order to optimize the calculations for live estimation of the opacity, the method comprises the steps of: - sampling of said area light source (10) in a plurality of samples (101, 102, 103), - for at least one sample of the plurality of samples (101, 102, 103) and for at least one first mesh element of the occluding object (11) visible from the at least one sample, generation of one shadow plane per edge of the at least one first mesh element, - estimation of a opacity level depending on coefficients of projection in a function base from values representative of the opacity for a set of intersection points (210, 211, 212) between at least one ray (21) having for origin a viewpoint (20) of the scene and shadow planes crossed by said at least one ray (21), depending on an angle formed ...

Method for estimating the quantity of light received by a participating media, and corresponding device

本發明係關於異質參與媒體(10)M點(34)所接收光量之估計方法，光係由光環境所發射。為使計算時間最佳，此方法包括步驟為：對諸點第一集合之各點(401至40n)，估計第一數值，代表該考慮點和沿複數特別發光方向(421至427)界限媒體(10)的第一表面(40)間之光衰減，並以球面函數之正交基礎，投射光強度還原之第一數值，估計第一投射係數；估計第二數值，代表點(34)和沿方向(421至427)的第二表面(41)間之光衰減，第二表面包括在點(34)鄰區的某些點(402,403,414,415)；使用第一投射係數和光強度還原之第二數值，估計點所接收之光量。

Hedge and grass cutter

TREEDOZER PROVIDED With a TOOL ARM WITH a GREAT SWING ANGLE

TREEDOZER PROVIDED With a TOOL ARM WITH a GREAT SWING ANGLE

La présente invention se rapporte à une débroussailleuse comportant un bâti (1) possédant un axe sensiblement vertical (3) sur lequel est monté un pivot (4) déplaçable en rotation et sur lequel pivot (4) est articulé un basculeur (6) et un deuxième vérin hydraulique (8) qui est également articulé sur le basculeur (6), ce dernier portant un bras articulé (11) muni d'un outil de débroussaillage (12).Elle est remarquable en ce que l'angle de rotation du pivot (4) avec le basculeur (6), le deuxième vérin hydraulique (8) et le bras articulé (11) muni de l'outil de débroussaillage (12) autour de l'axe sensiblement vertical (3) est supérieur à 100 degree à partir d'une position dans laquelle ledit bras articulé (11) est orienté perpendiculairement à la direction d'avancement (A). The present invention relates to a brushcutter comprising a frame (1) having a substantially vertical axis (3) on which is mounted a pivot (4) movable in rotation and on which pivot (4) is articulated a rocker (6) and a second hydraulic cylinder (8) which is also articulated on the rocker (6), the latter carrying an articulated arm (11) provided with a brushcutter (12) .It is remarkable in that the rotation angle of the pivot (4) with the rocker (6), the second hydraulic cylinder (8) and the articulated arm (11) provided with the brushcutter (12) around the substantially vertical axis (3) is greater than 100 degree to from a position in which said articulated arm (11) is oriented perpendicular to the direction of advance (A).

METHOD FOR GENERATING SHADOWS IN AN IMAGE

As to generate shadows in an image, the method comprises the steps of: Computing a depth-map that comprises an array of pixels, wherein pixels in the depth-map are associated to a single value corresponding to depth value that indicates a depth from a light source to a portion of nearest occluding object visible through the pixel, projecting a point visible through a pixel of said image into a light space, the result of said projection being a pixel of said depth-map, calculating a distance between the said visible point and the light source, fetching the depth value associated to said pixel of depth-map, computing, for said pixel of said image, an adaptive bias as a function of a predetermined base bias and a relationship between the normal of a surface on which the said visible point is located and incident light direction at said visible point, comparing for said pixel in the image, the distance between said visible point and the light source with the sum of the corresponding depth map value and said adaptive bias, labelling said point visible through said pixel as lit or shadowed according to said comparison.

A hedge and grass cutter

Cutter for roadside and other verges and embankments has hydraulic motor driving flail rotor through series of gears to reduce dimensions

The cutter, e.g. tractor-mounted, has a rotor (5) with flails or hammers, a feeler roller and a hydraulic motor (7) to drive the rotor. The transmission system between the hydraulic motor and rotor is in the form of gears (10, 11, 12) mounted on a cutter housing side plate (9) and enclosed by a sealed casing to retain lubricant. The gear system comprising driving (10), driven (12) and two intermediate (11) gears, at least one of the latter being set on an axle with bearings.

METHOD FOR EVALUATING THE QUANTITY OF LIGHT RECEIVED AT ONE SPOT IN VIRTUAL ENVIRONMENT CAPABLE OF OFFERING REALISTIC GLOBAL ILLUMINATION IN HIGH QUALITY

PURPOSE: A method for evaluating the quantity of light received at one spot in virtual environment is provided to optimize the computation time and/or capability needed for synthesizing the realistic display of light diffusion considering the light reflection of an object. CONSTITUTION: The amount of incident light received for each group is evaluated. The surface(41) which groups at least a part of points of virtual environment is evaluated. At least a first group(321,351) is evaluated from a plurality of groups. At least the first group contributes to the illumination of the spot P(43) by the reflection of incident light. The amount of light received at the spot P is evaluated by the incident light received by at least one of the first group. COPYRIGHT KIPO 2012 ...

Method for estimation of occlusion in a virtual environment

A method for estimating occlusion in a virtual environment comprising at least two objects and observed from a viewpoint. Thereafter, a second item of information representative of the distance separating a second fragment of a second object from the viewpoint according to an observation direction is computed; the second item of information is compared with a first item of information representative of the distance separating a first fragment of a first object from the viewpoint according to the observation direction and is stored in a first buffer memory. If the second item of information is less than the first item of information, then a third item of information representative of attributes associated with the second fragment is estimated, the second item of information is stored in a second buffer memory and the third item of information is stored in a third buffer memory. If the second item of information is greater than the first item of information, of then the first item of information ...

Method for estimating light scattering

The invention relates to a method for estimating the quantity of light scattered by a heterogeneous participating media, the light being transmitted by a light environment comprising a plurality of light sources. In order to improve the display while minimising the required calculation time, the method comprises steps for: estimation of first projection coefficients in an orthonormal basis of spherical functions, said first projection coefficients being representative of the reduction of light intensity in a point of said media, said estimation of first projection coefficients being carried out for each point of a first set of points of said media, and estimation of the quantity of light scattered by said media, according to at least one scattering direction of the light, using said first estimated projection coefficients.

Method and device for enriching the content of a depth map

A method and device for enriching the content associated with a first element of a depth map, the depth map being associated with a scene according to a point of view. Thereafter, at least a first information representative of a variation of depth in the first element in the space of the depth map is stored into the depth map.

METHOD FOR ESTIMATING SCATTERING OF LIGHT IN A HOMOGENEOUS MEDIUM USING A SPHERICAL FUNCTION

PURPOSE: A method for estimating scattering of light in a homogeneous medium is provided to optimize calculation time which is necessary for rendering of light scattering within homogeneous medium. CONSTITUTION: A first coefficient set of a projection is estimated from an orthonormal basis of a spherical function(51). The first coefficient set of the projection shows an incident luminance function which participating medium receives. A second coefficient set of the projection is estimated from an orthonormal basis of the spherical function(52). The second coefficient set of the projection shows a phase function of the participating medium. COPYRIGHT KIPO 2012 ...

METHOD OF ESTIMATING QUANTITY OF LIGHT RECEIVED AT POINT OF VIRTUAL ENVIRONMENT

PROBLEM TO BE SOLVED: To provide a method for estimating the calculation time and/or calculation power necessary to compose a live realistic display regarding the diffusion of light in a virtual environment. SOLUTION: The method includes the steps of estimating, for each group, the quantity of incident light received, estimating a surface comprising a point P43 grouping at least some of points of a virtual environment 1 visible from a viewpoint 40, estimating at least a first group of a plurality of groups contributing to the lighting of the point P43 by reflection of the incident light received from a light source 10 according to at least one item of occlusion information associated with the surface, and estimating the quantity of light received by the point P43 from the quantity of incident light received by the at least one first group according to the at least one item of reflectance information associated with the at least one first group. COPYRIGHT: (C)2012,JPO&INPIT ...

METHOD FOR ESTIMATING OCCLUSION IN A VIRTUAL ENVIRONMENT CAPABLE OF PROVIDING A VISUAL DISPLAY TO A 2D OR 3D SIMULATION GAME OR APPLICATION

PURPOSE: A method for estimating occlusion in a virtual environment is provided to reduce calculation time for estimation of the entire occlusion. CONSTITUTION: Information which shows cross points between half lines is estimated wherein the half lines have surfaces and points(72). The half lines are coupled with an occlusion factor. The occlusion factor is a function of an occlusion distance which separates the points of the half lines from the cross points. Occlusion is estimated from the points based on the information and the occlusion factors(73). COPYRIGHT KIPO 2012 ...

Method for estimation of occlusion in a virtual environment

The invention relates to a method for estimation of the occlusion at a point P of a virtual environment, the point P belonging to a surface (S) grouping at least some of the points of the virtual environment visible from a viewpoint. In order to improve the display while minimising the required calculation time, the method comprises steps for: 1. Method for estimation of the occlusion at a point P of a virtual environment , the point P belonging to a surface grouping at least some of the points of the virtual environment visible from a viewpoint , wherein said method comprises the following steps for:estimating of information representative of intersections between said surface and a plurality of half-lines having as origin said point P, said intersections being estimated by discretization of each half-line of said plurality of half-lines,{'sub': '0', 'associating of occlusion factors with the half-lines of said plurality of half-lines having an intersection with said surface, said occlusion factors being a function of occlusion distances Δseparating said point P from said intersections, and'}estimating of occlusion at said point P from said information representative of intersections estimated and said occlusion factors.2. Method according to claim 1 , wherein the value of an occlusion factor associated with a half-line of said plurality is inversely proportional to the distance separating said point P from the intersection between said half-line and said surface.3. Method according to claim 1 , wherein the occlusion at said point P corresponds to the ratio of the number of half-lines having an intersection with said surface to the total number of the plurality of half-lines claim 1 , the numerator of said ratio representative of the occlusion at the point P being weighted with said occlusion factors.4. Method according to claim 1 , wherein it comprises in addition a step of estimation of distances separating said viewpoint from visible points of the virtual ...

bar structure dusting or scattering, and sprinkler or spreader bar with such

Method for generating shadows in an image

Method for representing a participating media in a scene and corresponding device

A method and device for rendering a participating media delimited by a bounding box and rendered from a viewpoint, the media being at a determined distance from the viewpoint according to a viewing direction. In order to represent the limits of the participating media, the method comprises for at least one point of the volume formed by the bounding box, estimating a set of directions having for origin the at least one point; for each direction, estimating a first intersection point, corresponding to the intersection between the direction and the participating media, for which the associated density value is greater than a first threshold value; and estimating third intersection points, corresponding to the intersections between the viewing direction and the participating media, from an item of information representative of distances separating the first intersection point from a second intersection point corresponding to the intersection between the direction and the bounding box for each ...

Method for estimation of the quantity of light received at a point of a virtual environment

A method for estimation of the quantity of light received at a point P of a virtual environment that comprises several first points lit by a light source, these first points forming a plurality of groups each comprising at least one first point is disclosed. In order to improve the display while minimizing the required calculation time, the method estimates the quantity of incident light received at point P by estimating a surface including point P grouping at least some of the points of the virtual environment, estimating a first group of points contributing to the lighting of point P by reflection of the incident light received from the light source based on occlusion information associated with the surface including point P and estimating the quantity of incident light received by the first group of point based on reflectance information associated with such group.

METHOD AND DEVICE FOR ESTIMATING LIGHT SCATTERING

A method and device for estimating the quantity of light received by an element of at least a participating medium belonging to a light ray crossing the at least a participating medium and having as origin a light source. As to optimize the estimation and the rendering of the at least a medium, the method comprises determining a pseudo-metric function according to intersection points between the participating medium and the light ray, the pseudo-metric function representing the distance only along the part(s) of the light ray crossing the participating medium; estimating first projection coefficients in a functions basis, the first coefficients being representative of an extinction function along the light ray according to the pseudo-metric function; and estimating the quantity of light received by the element according to the first projection coefficients.

Method for computing the quantity of light received by a participating media, and corresponding device

A method for estimating the quantity of light received by a point M of a heterogeneous participating media, the light being emitted by a light environment. Thereafter, the method comprises estimating, for each point of a first set of points, first values representative of the light attenuation between the considered point and a first surface bounding the media along a plurality of particular directions of light emission, estimating first coefficients of projection by projection of the first values of reduction of light intensity in an orthonormal basis of spherical functions, estimating second values representative of the light attenuation between the point and a second surface along directions, the second surface comprising some of the points of the neighborhood of the point, and estimating the quantity of light received by the point using first coefficients of projection and second values of reduction of light intensity.

Method for rendering an image synthesis and corresponding device

A method and device for rendering a synthesis image comprising generating a plurality of elementary geometries (201 . . . 2i2) from an input geometry, a plurality of vertices being associated with each elementary geometry, each vertex being defined with coordinates; assigning an index value (0, 1 . . . 6, 7) to each elementary geometry of at least a part of the elementary geometries (201 . . . 2i2), the index value being estimated from the coordinates associated with at least one vertex of the elementary geometry, and rendering the synthesis image by using the indexed elementary geometries.

METHOD FOR RENDERING AN IMAGE SYNTHESIS AND CORRESPONDING DEVICE

A method and device for rendering a synthesis image comprising generating a plurality of elementary geometries (201 . . . 2i2) from an input geometry, a plurality of vertices being associated with each elementary geometry, each vertex being defined with coordinates; assigning an index value (0, 1 . . . 6, 7) to each elementary geometry of at least a part of the elementary geometries (201 . . . 2i2), the index value being estimated from the coordinates associated with at least one vertex of the elementary geometry, and rendering the synthesis image by using the indexed elementary geometries.

RAMP STRUCTURE OF SPRAY OR FUMIGATION AND MACHINE HAVING SUCH A STRUCTURE

Una estructura de rampa de pulverización que comprende una sección central (2) y dos estructuras laterales (3, 3’) dispuestas a cada lado de la sección central (2) estando cada una de las mismas formada por al menos una sección que tiene (4) una forma de sección triangular prismática, con una altura que decrece de manera continua de un extremo al otro de la sección (4) mencionada y que consiste en un conjunto de tubos que comprende un tubo longitudinal superior y dos tubos longitudinales inferiores (6) y elementos de conexión (7, 7’) que forman tirantes y varillas, que se extienden entre el tubo superior y los dos tubos inferiores (6). En la estructura de rampa la separación entre los dos tubos inferiores (6) varia de manera similar a la altura de un extremo longitudinal al otro de la sección (4) correspondiente.

ESTRUCTION OF COSPARCIDO AND PULVERIZATOR OR ESPARCIDOR QUE LA COMPRENDE

Una estructura de rampa (1) de pulverización o de esparcido que comprende dos mástiles laterales (3) formados cada uno por al menos un tramo (4), en donde cada tramo (4) o por lo menos uno de los tramos (4) de cada mástil lateral (3) está constituida por un conjunto de elementos alargados (5, 6, 7) que comprenden, por un lado, un tubo longitudinal superior (5), por otro lado, por lo menos un tubo longitudinal inferior (6) y, por último, elementos de refuerzo (7), que forman tirantes y puntales, que se extienden entre el tubo superior (5) y dicho por lo menos un tubo inferior (6), conectándolos. Estructura de rampa (1) caracterizada porque cada tubo longitudinal (5, 6) presenta por lo menos una protuberancia (8) radial, perfilada en la dirección longitudinal del tubo (5, 6) al que se hace referencia, y que comprende una pluralidad de aberturas espaciadas a lo largo de dicho tubo (5, 6), constituyendo cada una un sitio de sujeción para un extremo de por lo menos un elemento de refuerzo (7 ...

VIEW-DEPENDANT SHADING NORMAL ADAPTATION

A method of adjusting a shading normal vector for a computer graphics rendering program. Calculating a normalized shading normal vector pointing outwards from an origin point on a tessellated surface modeling a target surface to be rendered. Calculating a normalized outgoing reflection vector projecting from the origin point for an incoming view vector directed towards the origin point and reflecting relative to the normalized shading normal vector. Calculating a correction vector such that when the correction vector is added to the normalized outgoing reflection vector a resulting vector sum is yielded that is equal to a maximum reflection vector, wherein the maximum reflection vector is on or above the tessellated surface. Calculating a normalized maximum reflection vector by normalizing a vector sum of the correction vector plus the maximum reflection vector. Calculating a normalized adjusted shading normal vector by normalizing a vector difference of the normalized maximum reflection vector minus the incoming view vector.

Method for estimating light scattering

The invention relates to a method for estimating the quantity of light scattered by a heterogeneous participating media. In order to optimise the display while minimising the required calculation time, the method comprises steps for selecting at least one level of spatial subdivision of said media from among a plurality of hierarchic levels of spatial subdivision according to at least one item of error information representative of an attenuation difference in said media according to at least one direction between two consecutive hierarchic levels, and estimating the quantity of light scattered by sampling of said media along at least one scattering direction, the sampling being a function of at least one selected spatial subdivision level.

METHOD FOR ESTIMATION OF AN ITEM OF INFORMATION REPRESENTATIVE OF HEIGHT

The invention relates to a method for estimation of information representative of a height. In order to minimize the required calculation time, the method comprises steps for: 1. Method for estimation of an item of information representative of a height , wherein the method comprises the following steps:selection of a first point from among a plurality of points of a normal map, a normal being associated with each of the points of said plurality, a reference height being associated with said first point,estimation of a first height difference between the first point and a second point of the normal map different from the first point according to the normal associated with the second point and the distance separating the first point from the second point in the normal map, andestimation of a second height difference between the second point and a third point of the normal map different from first and second points according to the normal associated with the third point and the distance separating the second point from the third point in the normal map.2. Method according to claim 1 , wherein the step of estimation of a first height difference comprises a step of estimation of a vector between the first point and the second point and in that the step of estimation of a second height difference comprises a step of estimation of a vector between the second point and the third point.3. Method according to claim 1 , wherein the height associated with the second point is equal to the reference height to which is added the estimated height difference and in that the height associated with the third point is equal to the height associated with the second point to which is added the estimated height difference.4. Method according to claim 1 , wherein the estimation of a height difference is weighted by a weighting factor.5. Method according to claim 1 , wherein said first height difference is associated with the second point and stored in a heightmap and said second height ...

METHOD FOR GENERATING AN ENVIRONMENT MAP

An environment map representative of lighting information of a real environment. As to enhance the impression of immersion into a virtual environment, the method comprises the steps of acquisition at real time of an image representative of a partial lighting information of said real environment from a digital optical acquisition device, said image comprising a plurality of pixels; and estimation of said environment map by extrapolation of at least a part of said pixels of said image, the extrapolation comprising the application of a first value corresponding to the mean value of the pixels of said image to at least a first part of the environment map.

Method for estimation of an item of information representative of height

The invention relates to a method for estimation of information representative of a height. In order to minimize the required calculation time, the method comprises steps for: selection of a first point from among a plurality of points of a normal map, a normal being associated with each of the points of said plurality, a reference height being associated with said first point, estimation of a height difference between the first point and a second point of the normal map different from the first point according to the normal associated with the second point and the distance separating the first point from the second point in the normal map.

Method for estimating quantity of light received by participating media, and corresponding device

The invention relates to a method for estimating the quantity of light received by a point M (34) of a heterogeneous participating media (10), the light being emitted by a light environment. In order to optimise the required calculation time, the method comprises steps for: for each point (401 to 40n) of a first set of points, estimating first values representative of the light attenuation between said considered point and a first surface (40) bounding the media (10) along a plurality of particular directions (421 to 427) of light emission, and estimating first coefficients of projection by projection of the first values of reduction of light intensity in an orthonormal basis of spherical functions; estimating second values representative of the light attenuation between the point (34) and a second surface (41) along directions (421 to 427), the second surface comprising some of the points (402, 403, 414, 415) of the neighbourhood of the point (34); and estimating the quantity of light ...

METHOD FOR REPRESENTING A PARTICIPATING MEDIA IN A SCENE AND CORRESPONDING DEVICE

A method and device for rendering a participating media delimited by a bounding box and rendered from a viewpoint, the media being at a determined distance from the viewpoint according to a viewing direction. In order to represent the limits of the participating media, the method comprises for at least one point of the volume formed by the bounding box, estimating a set of directions having for origin the at least one point; for each direction, estimating a first intersection point, corresponding to the intersection between the direction and the participating media, for which the associated density value is greater than a first threshold value; and estimating third intersection points, corresponding to the intersections between the viewing direction and the participating media, from an item of information representative of distances separating the first intersection point from a second intersection point corresponding to the intersection between the direction and the bounding box for each ...

Method for estimation of information representative of a pixel of a virtual object

The invention relates to a method for estimating information representative of a pixel of a virtual object. In order to improve the rendering while minimizing the required calculation time, the method comprises defining a first surface element associated with the pixel according to a direction of observation of the virtual object, the first surface element belonging to a representation of the virtual object according to a first level of detail; associating a second surface element with the first surface element, the second surface element being determined by intersection between the direction of observation and a first parametric surface representing the virtual object according to a second level of detail; estimating the information representative of the pixel according to the second surface element and information associated with the second surface element enabling the virtual object to be represented according to a third level of detail.

METHOD FOR ESTIMATING LIGHT SCATTERING

The invention relates to a method for estimating the quantity of light scattered by a heterogeneous participating media. In order to optimise the display while minimising the required calculation time, the method comprises steps for selecting at least one level of spatial subdivision of said media from among a plurality of hierarchic levels of spatial subdivision according to at least one item of error information representative of an attenuation difference in said media according to at least one direction between two consecutive hierarchic levels, and estimating the quantity of light scattered by sampling of said media along at least one scattering direction, the sampling being a function of at least one selected spatial subdivision level.

METHOD AND DEVICE FOR COMPILING A SOURCE PROGRAM

To compile a source program comprising first rule(s) not supported by a target environment and to enable the first rule(s) to be executed on the target environment, the method comprises generating a directed graph representative of the source program, generating a first data structure corresponding to a flat representation of the directed graph, first data structure comprising at least a first identifier associated with the at least a first rule, and generating a second data structure comprising first instructions adapted for interpreting the first data structure by using the at least a first identifier, the instructions being coded into a code supported by the target environment. 1. A method for compiling a source program , the source program comprising at least a first rule not supported by a target environment , wherein the method comprisesgenerating a directed graph representative of the source program,generating a first data structure, the first data structure corresponding to a flat representation of said directed graph, said first data structure comprising at least a first identifier identifying the at least a first rule,generating a second data structure comprising first instructions adapted for interpreting the first data structure by using the at least a first identifier, the first instructions being coded into a code supported by the target environment.2. The method according to claim 1 , wherein at least a rule type claim 1 , at least a successor and at least a rule expression are associated with the at least a first rule.3. The method according to claim 2 , wherein at least one of the at least a rule expression is a parametric expression claim 2 , the at least a parametric expression comprising at least a global parameter modified at runtime.4. The method according to claim 2 , wherein the at least a first identifier identifies the at least a rule type and wherein at least a second identifier is used in the first data structure for identifying the at ...

Method for generating an environment map

An environment map representative of lighting information of a real environment. As to enhance the impression of immersion into a virtual environment, the method comprises the steps of acquisition at real time of an image representative of a partial lighting information of said real environment from a digital optical acquisition device, said image comprising a plurality of pixels; and estimation of said environment map by extrapolation of at least a part of said pixels of said image, the extrapolation comprising the application of a first value corresponding to the mean value of the pixels of said image to at least a first part of the environment map.

Method for estimating the opacity level in a scene and corresponding device

A method and device for estimating the opacity at a point of a scene lit by an area light source and comprising an object defined by a mesh and occluding some of the emitted light. In order to optimize the calculations for live estimation of the opacity, the method comprises sampling said area light source in a plurality of samples, for at least one sample of the plurality of samples and for at least one first mesh element of the occluding object visible from the at least one sample, generating one shadow plane per edge of the at least one first mesh element, estimating a opacity level depending on coefficients of projection in a function base from values representative of the opacity for a set of intersection points between at least one ray having for origin a viewpoint of the scene and shadow planes crossed by said at least one ray, depending on an angle formed by the normal associated with each shadow plane crossed and by said at least one ray.

Method for estimating the opacity level in a scene and corresponding device

The invention relates to a method for estimating the opacity at a point (13) of a scene lit by an area light source (10) and comprising an object (11) defined by a mesh and occluding some of the emitted light. In order to optimize the calculations for live estimation of the opacity, the method comprises the steps of: - sampling of said area light source (10) in a plurality of samples (101, 102, 103), - for at least one sample of the plurality of samples (101, 102, 103) and for at least one first mesh element of the occluding object (11) visible from the at least one sample, generation of one shadow plane per edge of the at least one first mesh element, - estimation of a opacity level depending on coefficients of projection in a function base from values representative of the opacity for a set of intersection points (210, 211, 212) between at least one ray (21) having for origin a viewpoint (20) of the scene and shadow planes crossed by said at least one ray (21), depending on an angle formed ...

METHOD FOR ESTIMATING LIGHT SCATTERING

The invention relates to a method for estimating the quantity of light scattered by a heterogeneous participating media. In order to improve the display while minimising the required calculation time, the method comprises steps for: 1. Method for estimation of the quantity of light scattered by a heterogeneous participating media , wherein the method comprises steps for:estimation of projection coefficients representative of values of light intensity reduction estimated for a set of points of said media situated along at least one emission direction of light by a light source by projection of said values of light intensity reduction in a functional space of a functions base, andestimation of the quantity of light scattered by said media, according to at least one scattering direction of the light, using said estimated projection coefficients.2. Method according to claim 1 , wherein the estimation of said projection coefficients is independent of the wavelength of the light emitted by the light source.3. Method according to claim 1 , wherein the projection coefficients are estimated by taking into account a predetermined scale factor Δ claim 1 , the density of said media being divided by said scale factor for the estimation of projection coefficients.4. Method according to claim 1 , wherein it comprises a step of estimation claim 1 , for each point of said media claim 1 , of a value representative of the reduction of light intensity in a given point of said media.5. Method according to claim 1 , wherein said estimation of values representative of the reduction in light intensity is carried out by discretization of said media.6. Method according to claim 1 , wherein said estimation of values representative of the reduction in light intensity is carried out using the ray-marching algorithm method.7. Method according to claim 1 , wherein said estimation of the quantity of light scattered by said media is carried out by discretization of said media along the at least one ...

METHOD FOR ESTIMATING LIGHT SCATTERING

The invention relates to a method for estimating the quantity of light scattered by a heterogeneous participating media, the light being transmitted by a light environment comprising a plurality of light sources. In order to improve the display while minimising the required calculation time, the method comprises steps for: estimation of first projection coefficients in an orthonormal basis of spherical functions, said first projection coefficients being representative of the reduction of light intensity in a point of said media, said estimation of first projection coefficients being carried out for each point of a first set of points of said media, and estimation of the quantity of light scattered by said media, according to at least one scattering direction of the light, using said first estimated projection coefficients.

Method for representing a participating media in a scene and corresponding device

The invention relates to a method for rendering a participating media (10) delimited by a bounding box (30) and rendered from a viewpoint (14), the media (10) being at a determined distance from the viewpoint according to a viewing direction. In order to represent the limits of the participating media, the method comprises steps of: - for at least one point (300) of the volume formed by said bounding box (30), estimation of a set of directions (31 to 3i) having for origin said at least one point (300): - for each direction (31 to 3i), estimation of a first intersection point (31m), corresponding to the intersection between said direction and said participating media (10), for which the associated density value is greater than a first threshold value, and - estimation of third intersection points, corresponding to the intersections between said viewing direction and said participating media, from an item of information representative of distances separating the first intersection point ( ...

Method of estimating diffusion of light

The invention relates to a method for estimating the quantity of light scattered by a heterogeneous participating media. In order to improve the display while minimizing the required calculation time, the method comprises steps for estimating projection coefficients in a function database using values representative of density for a set of points of said media situated along at least one emission direction of light by a light source, and for estimating of the quantity of light scattered by said media, according to at least one diffusion direction of the light, using said estimated projection coefficients.

Method for estimation of the quantity of light received at a point of a virtual environment

A method for estimation of the quantity of light received at a point P of a virtual environment that comprises several first points lit by a light source, these first points forming a plurality of groups each comprising at least one first point is disclosed. In order to improve the display while minimizing the required calculation time, the method estimates the quantity of incident light received at point P by estimating a surface including point P grouping at least some of the points of the virtual environment, estimating a first group of points contributing to the lighting of point P by reflection of the incident light received from the light source based on occlusion information associated with the surface including point P and estimating the quantity of incident light received by the first group of point based on reflectance information associated with such group. 1. Method for estimation of the quantity of light received at a point P of a virtual environment , said virtual environment comprising a plurality of first points lit by a light source , said first points forming a plurality of groups each comprising at least one first point , wherein said method comprises the following steps for:estimating, for each group, the quantity of incident light received,estimating a surface grouping at least some of the points of the virtual environment visible from a viewpoint, said surface comprising said point P,estimating at least a first group of said plurality of groups contributing to the lighting of said point P by reflection of the incident light received from said light source according to at least one item of occlusion information associated with said surface,{'b': 321', '351, 'estimating the quantity of light received by said point P from the quantity of incident light received by said at least one first group (, ) according to the at least one item of reflectance information associated with said at least one first group.'}2. Method according to claim 1 , wherein ...

METHOD FOR ESTIMATION OF OCCLUSION IN A VIRTUAL ENVIRONMENT

A method for estimating occlusion in a virtual environment comprising at least two objects and observed from a viewpoint. Thereafter, a second item of information representative of the distance separating a second fragment of a second object from the viewpoint according to an observation direction is computed:, the second item of information is compared with a first item of information representative of the distance separating a first fragment of a first object from the viewpoint according to the observation direction and is stored in a first buffer memory. If the second item of information is less than the first item of information, then a third item of information representative of attributes associated with the second fragment is estimated, the second item of information is stored in a second buffer memory and the third item of information is stored in a third buffer memory. If the second item of information is greater than the first item of information, then the first item of information is stored in the second buffer memory. 1. Method for generation of an image representative of a virtual environment comprising at least two objects , the virtual environment being observed from a viewpoint , wherein said method comprises the following steps for:computing a second item of information representative of the distance separating a second fragment of a second object from said viewpoint according to an observation direction, computing a third item of information representative of attributes associated with the second fragment if and only if the second item of information is less than the first item of information, storage of the second item of information in a second buffer memory and storage of the third item of information in as third buffer memory,', 'if the second item of information is greater than the first item of information, storage of the first item of information in the second buffer memory,', 'the first buffer memory and the second buffer memory being used ...

METHOD FOR ESTIMATING THE QUANTITY OF LIGHT RECEIVED BY A PARTICIPATING MEDIA, AND CORRESPONDING DEVICE

A method for estimating the quantity of light received by a point M of a heterogeneous participating media, the light being emitted by a light environment. Thereafter, the method comprises estimating, for each point of a first set of points, first values representative of the light attenuation between the considered point and a first surface bounding the media along a plurality of particular directions of light emission, estimating first coefficients of projection by projection of the first values of reduction of light intensity in an orthonormal basis of spherical functions, estimating second values representative of the light attenuation between the point and a second surface along directions, the second surface comprising some of the points of the neighbourhood of the point, and estimating the quantity of light received by the point using first coefficients of projection and second values of reduction of light intensity. 1. Method for estimating the quantity of light received by a point M of a heterogeneous participating media , the light being emitted by a light environment comprising a plurality of light sources , wherein the method comprises steps for:selecting some of the points of said medium to form a first set of points of said medium, said first set comprising said point M,for each point of said first set, estimating a plurality of first values of reduction of light intensity representative of the light attenuation between said point considered and a first surface along a plurality of particular directions of light emission, the first surface bounding the medium,estimating a plurality of second values of reduction of light intensity representative of the light attenuation between said point M and at least one second surface along the plurality of particular directions of light emission, the at least one second surface comprising some of the points of the neighbourhood of said point M belonging to the first set,for each point of said first set, estimating ...

METHOD AND DEVICE FOR ESTIMATING LIGHT SCATTERING

A method and device for estimating the quantity of light received by an element of at least a participating medium belonging to a light ray crossing the at least a participating medium and having as origin a light source. As to optimize the estimation and the rendering of the at least a medium, the method comprises determining a pseudo-metric function according to intersection points between the participating medium and the light ray, the pseudo-metric function representing the distance only along the part(s) of the light ray crossing the participating medium; estimating first projection coefficients in a functions basis, the first coefficients being representative of an extinction function along the light ray according to the pseudo-metric function; and estimating the quantity of light received by the element according to the first projection coefficients. 1. A method of estimating a quantity of light received by at least an element of at least a participating medium , the at least an element belonging to a light ray crossing the at least a participating medium and having as origin a light source , wherein the method comprises:determining a pseudo-metric function according to intersection points between the at least a participating medium and the light ray, the pseudo-metric function being determined in such a way as to be representative of distance only along the part of the light ray crossing the at least a participating medium,estimating first projection coefficients in a functions basis, said first coefficients being representative of an extinction function along said light ray according to said pseudo-metric function,estimating the quantity of light received by the at least an element according to said first projection coefficients.2. The method according to claim 1 , wherein the pseudo-metric function is increasing inside the at least a participating medium and stationary outside the at least a participating medium.3. The method according to claim 1 , wherein ...

METHOD AND DEVICE FOR ENRICHING THE CONTENT OF A DEPTH MAP

A method and device for enriching the content associated with a first element of a depth map, the depth map being associated with a scene according to a point of view. Thereafter, at least a first information representative of a variation of depth in the first element in the space of the depth map is stored into the depth map. 115-. (canceled)16. A method for generating a depth map associated with a scene , wherein depth information being associated with each first element of a plurality of first elements of the depth map , the method comprising storing at least a first information in the depth map in addition to the depth information , said at least a first information being associated with said each first element and representative of a variation of depth in said each first element in the space of the depth map.17. The method according to claim 16 , wherein the at least a first information is established from a single surface element of the scene.18. The method according to claim 17 , wherein the at least a first information is established from said depth information associated with said each first element and from depth information associated with at least a second element claim 17 , said each first element and the at least a second element belonging to said single surface element of the scene projected into the depth map.19. The method according to claim 18 , wherein said each first element and the at least a second element are adjacent.20. The method according to claim 18 , wherein the at least a first information is established by computing the ratio of the difference between the depth information associated with said each first element and the depth information associated with the at least a second element to the distance between said each first element and the at least a second element.21. The method according to claim 17 , wherein the at least a first information is established from an equation of said single surface element of the scene projected into the ...

METHOD FOR REPRESENTING A PARTICIPATING MEDIA IN A SCENE AND CORRESPONDING DEVICE

A method and device for rendering a participating media delimited by a bounding box and rendered from a viewpoint, the media being at a determined distance from the viewpoint according to a viewing direction. In order to represent the limits of the participating media, the method comprises for at least one point of the volume formed by the bounding box, estimating a set of directions having for origin the at least one point; for each direction, estimating a first intersection point, corresponding to the intersection between the direction and the participating media, for which the associated density value is greater than a first threshold value; and estimating third intersection points, corresponding to the intersections between the viewing direction and the participating media, from an item of information representative of distances separating the first intersection point from a second intersection point corresponding to the intersection between the direction and the bounding box for each direction of the at least one part of the set of estimated directions. 1. A method of rendering a participating media comprised in a scene , the media being delimited by a bounding box , said participating media being rendered from a viewpoint at a determined distance from the viewpoint according to a viewing direction , wherein the method comprises:for at least one point of the volume formed by said bounding box, estimating a set of directions having for origin said at least one point and distributed according to at least one half-sphere of which the base is centred on said at least one point,for each direction of at least one part of the set of estimated directions, estimating a first intersection point, corresponding to the intersection between said direction and said participating media, for which the associated density value is greater than a first threshold value, said first intersection point being estimated by starting from a second intersection point corresponding to the ...

METHOD FOR ESTIMATING THE OPACITY LEVEL IN A SCENE AND CORRESPONDING DEVICE

A method and device for estimating the opacity at a point of a scene lit by an area light source and comprising an object defined by a mesh and occluding some of the emitted light. In order to optimize the calculations for live estimation of the opacity, the method comprises sampling said area light source in a plurality of samples, for at least one sample of the plurality of samples and for at least one first mesh element of the occluding object visible from the at least one sample, generating one shadow plane per edge of the at least one first mesh element, estimating a opacity level depending on coefficients of projection in a function base from values representative of the opacity for a set of intersection points between at least one ray having for origin a viewpoint of the scene and shadow planes crossed by said at least one ray, depending on an angle formed by the normal associated with each shadow plane crossed and by said at least one ray. 1. A method of estimating opacity at a point of a scene , said scene being lit by an area light source , said scene comprising at least one object occluding some of the light emitted by said area light source , said occluding object being defined by a mesh , wherein the method comprises:sampling said area light source in a plurality of samples,for at least one sample of the plurality of samples and for at least one first mesh element of the occluding object visible from the at least one sample, generating one shadow plane per edge of the at least one first mesh element,computing projection coefficients in a functions base from values representative of the opacity for a set of intersection points between at least one ray having for origin a viewpoint of the scene and crossing the scene and shadow planes crossed by said at least one ray, depending on an angle formed by the normal associated with each shadow plane crossed and by said at least one ray,computing a value representative of a opacity level at a point from said at ...

METHOD FOR RENDERING AN IMAGE SYNTHESIS AND CORRESPONDING DEVICE

A method and device for rendering a synthesis image comprising generating a plurality of elementary geometries () from an input geometry, a plurality of vertices being associated with each elementary geometry, each vertex being defined with coordinates; assigning an index value (0, 1 . . . 6, 7) to each elementary geometry of at least a part of the elementary geometries (), the index value being estimated from the coordinates associated with at least one vertex of the elementary geometry, and rendering the synthesis image by using the indexed elementary geometries. 1. A method of rendering a computer graphic image , comprising:generating a plurality of elementary geometries from an input geometry, a plurality of vertices being associated with each elementary geometry, each vertex being defined with coordinates,assigning an index value to each elementary geometry of at least a part of the elementary geometries, the index value being computed from the coordinates associated with at least one vertex of the elementary geometry, andrendering the computer graphic image by using the indexed elementary geometries.2. The method according to further comprising determining a number of elementary geometries to be generated.3. The method according to claim 2 , wherein the computer graphic image is generated from a grammar comprising at least a procedural rule and a set of rule parameters claim 2 , the determining of the number of elementary geometries comprising:representing the grammar with a tree, the tree being representative of the at least a procedural rule,determining a number of terminal symbols by parsing the tree representative of the at least a procedural rule according to the set of rule parameters,the number of elementary geometries to be generated corresponding to the determined number of terminal symbols.4. The method according to claim 3 , further comprising assigning one single indexed elementary geometry to each terminal symbol.5. The method according to claim 3 ...

System, method, and computer program product for determining a quantity of light received by an element of a scene

A system, method, and computer program product are provided for determining a quantity of light received by an element of a scene. In use, a quantity of light received by a first element of the scene is determined by averaging a quantity of light received by elements of the scene that are associated with a selected set of light paths.

METHOD AND DEVICE FOR ESTABLISHING THE FRONTIER BETWEEN OBJECTS OF A SCENE IN A DEPTH MAP

A method and device for establishing a frontier between a first object and at least a second object of a scene in the space of a depth map, at least a part of the first object and at least a part of the at least a second object being visible from the point of view associated with the depth map through a set () of elements of the depth map. Thereafter, the method comprises comparing, for a point of the scene visible through a first element of said set, depth information associated with the point with depth information associated with said first element and with depth information associated with the other elements, called second elements; establishing a line representative of a direction associated with the frontier between the first object and the at least a second object from the comparison results; selecting a part of the vertices of surface elements visible through the set according to the orientation of normal associated with the vertices; and establishing the frontier from the coordinates of the selected vertices expressed in the space of the depth map. 1. A method for establishing a frontier between a first object and at least a second object in a depth map associated with a scene according to a point of view , wherein the scene comprising the first object and the at least a second object , at least a part of the first object and at least a part of the at least a second object being visible from the point of view associated with the depth map through a set of elements of the depth map , the first object and the at least a second object being modelled with surface elements , the method comprising:from depth information associated with a point of the scene visible through a first element of said set of elements of the depth map from depth information associated with said first element and from depth information associated with the other elements, called second elements, of said set of elements, establishing a line associated with a direction associated with the ...

Method and device for establishing the frontier between objects of a scene in a depth map

A method for establishing a frontier between a first object and at least a second object of a scene in the space of a depth map (10), at least a part of the first object and at least a part of the at least a second object being visible from the point of view associated with the depth map through a set (3) of elements (31 to 39) of the depth ma. Thereafter, the method comprises comparing, for a point of the scene visible through a first element (35) of said set (3), depth information associated with the point with depth information associated with said first element (35) and with depth information associated with the other elements (31, 32, 33, 34, 36, 37, 38, 39), called second elements; establishing a line (30) representative of a direction associated with the frontier between the first object and the at least a second object from the comparison results; selecting a part of the vertices (V 0 , V 2 , V 3 , V 6 , V 8 ) of surface elements visible through the set (3) according to the orientation of normal associated with the vertices (V 0 , V 2 , V 3 , V 6 , V 8 ); and establishing the frontier from the coordinates of the selected vertices (V 0 , V 2 , V 3 , V 6 , V 8 ) expressed in the space of the depth map.

Method and device for enriching the content of a depth map

A method for enriching the content associated with a first element (21) of a depth map (10) the depth map (10) being associated with a scene (1) according to a point of view. Thereafter, at least a first information representative of a variation of depth in the first element (21) in the space of the depth map is established.

METHOD FOR GRIPPING AND REMOVING THE TIE MEANS FROM A BALE AND MACHINE INTENDED TO LOAD, SHRED, DISTRIBUTE AND/OR TRANSFORM SUCH A BALE AND FITTED WITH A GRIP AND A REMOVAL DEVICE

The present invention is a method for gripping and removing the tie means from a bale loaded in a machine intended to load, shred, distribute and/or transform such a bale held in shape by a tie means extending around its outer surface. It involves, using such a machine furthermore including a grip and removal device including a grip means and removal means, moving the grip means from a first position remote from the outer surface of the bale to a second position on the outer surface, then gripping the latter using the grip means and removing the tie means by moving it away from the outer surface. Its subject is also such a machine suitable for the implementation of the said method. 1. Method for gripping and removing the tie means of a cylindrical or rectangular cuboid bale loaded in a machine intended to load , shred , distribute and/or transform such a bale , the machine including a receptacle and a receiving area on which such a bale rests , held in shape by a tie means extending around the outer surface of the bale , which involves , using such a machine furthermore including a device for gripping and removing the tie means , the device including a grip means and removal means , following a cutting step for the tie means:in a grip step: moving the grip means from a first position remote from the outer surface of the bale to a second position on the outer surface where the tie means extends, then gripping the tie means using the grip means,in a removal step: removing the tie means from the bale using the removal means by moving it away from the outer surface of the bale.2. A method for gripping and removing according to claim 1 , which involves claim 1 , in the grip step claim 1 , in the second position claim 1 , performing a change in state of the grip means to switch it from an expecting state to a grip or closed state thereby carrying out the gripping of the tie means.3. A method for gripping and removing according to claim 1 , which involves claim 1 , in the ...

DEVICE FOR MANAGING THE HYDRAULIC DISTRIBUTION OF A VERIN

METHOD FOR ESTIMATING LIGHT DISTRIBUTION IN A HOMOGENEOUS ENVIRONMENT

L'invention concerne un Procédé d'estimatton de la quantité de lumière diffusée par un milieu participant (10) homogène, la lumière étant émise par un environnement lumineux (3). Afin d'améliorer le rendu tout en minimisant les temps de calculs nécessaires, le procédé comprend les étapes de : - estimation d'un premier ensemble de coefficients de projection et d'un deuxième ensemble de coefficients de projection dans une même base orthonormée de fonctions sphériques, ledit premier ensemble étant représentatif de la fonction de luminance incidente reçue par ledit milieu (10) et ledit deuxième ensemble étant représentatif de la fonction de phase dudit milieu (10) ; - estimation de la quantité de lumière diffusée par ledit milieu (10), selon au moins une direction de diffusion de la lumière, à partir desdits premier et deuxième ensembles de coefficients de projection. The invention relates to a method for estimating the amount of light diffused by a homogeneous participating medium (10), the light being emitted by a light environment (3). In order to improve the rendering while minimizing the necessary calculation times, the method comprises the steps of: estimating a first set of projection coefficients and a second set of projection coefficients in the same orthonormal basis of functions spherical, said first set being representative of the incident luminance function received by said medium (10) and said second set being representative of the phase function of said medium (10); - estimating the amount of light scattered by said medium (10), in at least one direction of light scattering, from said first and second sets of projection coefficients.

CUTTING MACHINE COMPRISING AN IMPROVED CUTTING TOOL

CUTTING MACHINE COMPRISING AN IMPROVED CUTTING TOOL

La présente invention concerne une machine (1) de coupe, notamment une tailleuse de haies, comportant un carter (6) portant des organes de coupe (7a, 7b, 7c, 7d) animés en rotation au moyen d'une transmission (10), chaque organe de coupe (7a, 7b, 7c, 7d) comportant au moins un couteau (9). L'invention est remarquable par le fait qu'au cours de la rotation des organes de coupe (7a, 7b, 7c, 7d), un couteau (9) d'un premier organe de coupe (7a respectivement 7c) chevauche un autre couteau (9) d'un deuxième organe de coupe (7b respectivement 7d) adjacent au premier organe de coupe (7a respectivement 7c), en avant du carter (6). The present invention relates to a cutting machine (1), in particular a hedge trimmer, comprising a housing (6) carrying cutters (7a, 7b, 7c, 7d) rotated by means of a transmission (10). each cutting member (7a, 7b, 7c, 7d) having at least one knife (9). The invention is remarkable in that during the rotation of the cutting members (7a, 7b, 7c, 7d), a knife (9) of a first cutting member (7a or 7c respectively) overlaps another knife (9) a second cutting member (7b or 7d) adjacent to the first cutting member (7a respectively 7c), in front of the housing (6).

METHOD FOR ESTIMATING OCCULTATION IN A VIRTUAL ENVIRONMENT

L'invention concerne un procédé d'estimation de l'occultation en un point P (16) d'un environnement virtuel, le point P (16) appartenant à une surface (S) regroupant au moins une partie des points de l'environnement virtuel visibles depuis un point de vue (11). Afin d'améliorer le rendu tout en minimisant les temps de calculs nécessaires, le procédé comprend les étapes de : - estimation d'intersections (403) entre ladite surface (S) et une pluralité de demi-droites ayant pour origine ledit point P (16), lesdites intersections (403) étant estimées par discrétisation de chaque demi-droite (40) de ladite pluralité de demi-droites ; et - estimation de l'occultation en ledit point P (16) à partir desdites intersections (403) estimées. The invention relates to a method for estimating the occultation at a point P (16) of a virtual environment, the point P (16) belonging to a surface (S) comprising at least a portion of the points of the environment virtual view from a point of view (11). In order to improve the rendering while minimizing the necessary calculation times, the method comprises the steps of: estimating intersections (403) between said surface (S) and a plurality of half-lines originating from said point P ( 16), said intersections (403) being estimated by discretizing each half-line (40) of said plurality of half-lines; and estimating the occultation at said point P (16) from said estimated intersections (403).

METHOD FOR ESTIMATING OPACITY LEVEL IN A SCENE AND CORRESPONDING DEVICE

L'invention concerne un procédé d'estimation de l'opacité en un point (13) d'une scène éclairée par une source de lumière étendue (10) et comprenant un objet (11) défini par un maillage et occultant une partie de la lumière émise. Afin d'optimiser les calculs pour l'estimation en temps réel de l'opacité, le procédé comprend les étapes de : - échantillonnage de ladite source de lumière étendue (10) en une pluralité d'échantillons (101, 102, 103) ; - pour au moins un échantillon de la pluralité d'échantillons (101, 102, 103) et pour au moins un premier élément du maillage de l'objet occultant (11) visible depuis le au moins un échantillon, génération d'un plan d'ombre par arête du au moins un premier élément ; estimation d'un niveau d'opacité en fonction de coefficients de projection dans une base de fonctions à partir de valeurs représentatives de l'opacité pour un ensemble des points d'intersection (210, 211, 212) entre au moins un rayon (21) ayant pour origine un point de vue (20) de la scène et des plans d'ombres traversés par ledit au moins un rayon (21), en fonction d'un angle formé par la normale associée à chaque plan d'ombre traversé et par ledit au moins un rayon (21). L'invention concerne également un dispositif correspondant. The invention relates to a method for estimating the opacity at a point (13) of a scene illuminated by an extended light source (10) and comprising an object (11) defined by a mesh and obscuring a part of the emitted light. In order to optimize the calculations for the real-time estimation of the opacity, the method comprises the steps of: - sampling said extended light source (10) into a plurality of samples (101, 102, 103); for at least one sample of the plurality of samples (101, 102, 103) and for at least one first element of the mesh of the occulting object (11) visible from the at least one sample, generating a plan of shadow per edge of the at least ...

DEVICE FOR FIXING KNIVES ON THE ROTOR OF A MOWER-BRUSHCUTTER

PERFECTED HEDGE SIZE MACHINE

The cutter has a housing (4) with sectional tools driven in rotation by a driving motor transmitting its motion through a gear transmission (12) placed in the housing. The transmission has an internal lubrification system (13) circulating a lubricant inside the housing, during working. The sectional tools are synchronized in rotation in a plane, where the sectional tools are carried by toothed driving motors (15). Three intermediate toothed wheels (14) are placed between the toothed driving motors.

ROTOR FOR DEBRALCHING APPARATUS

La présente invention concerne un rotor (1) pour appareil de débroussaillage comprenant : une pièce axiale (2) et entrainée en rotation autour de son axe formant un axe central (2bis), au moins un outil (3) monté en rotation autour d'un axe périphérique (3bis), cet axe périphérique (3bis) étant disposé parallèle à l'axe central (2bis) et maintenu en position et entrainé en rotation avec la pièce axiale (2) par au moins une structure montée solidaire avec la pièce axiale (2), caractérisé en ce que la pièce axiale (2) et la position de l'outil (3) sont réalisées de sorte que le rapport entre le rayon de rotation de l'outil (3) dans lequel il s'inscrit autour de l'axe périphérique (3bis) et le diamètre de la pièce axiale (2) présente un ratio inférieur à 0,46. The present invention relates to a rotor (1) for a brushcutter comprising: an axial part (2) and driven in rotation about its axis forming a central axis (2a), at least one tool (3) rotatably mounted around a peripheral axis (3a), this peripheral axis (3a) being arranged parallel to the central axis (2a) and held in position and driven in rotation with the axial part (2) by at least one structure mounted integral with the axial part (2), characterized in that the axial part (2) and the position of the tool (3) are made so that the ratio between the radius of rotation of the tool (3) in which it fits around the peripheral axis (3a) and the diameter of the axial part (2) has a ratio less than 0.46.

MACHINERY FOR MANAGEMENT OF ARTICULATED ARM CARRYING TOOL

La présente invention concerne une machinerie pour un bras articulé portant un outil (5) comprenant : - une flèche (3) montée sur un bâti (1), - un balancier (4) monté entre la flèche (3) et l'outil (5), -au moins un mécanisme d'actionnement (7a, 7b, 7c, 7e) au niveau de chaque articulation du bras, caractérisée en ce que, la machinerie comprend un dispositif de gestion du déplacement de l'outil (5) dans l'espace par rapport au bâti (1), ce dispositif de gestion comprenant : - au moins un capteur (6a, 6b, 6c, 6e) de position intégré à chaque articulation du bras, - une unité centrale (9) connectée à au moins un capteur (6a, 6b, 6c, 6e) pour positionner spatialement l'outil (5) par rapport au bâti (1), - une unité de coordination (10) connectée à l'unité centrale (9), à l'interface-utilisateur (8) et aux mécanismes d'actionnement (7a, 7b, 7c, 7e) du bras. The present invention relates to machinery for an articulated arm carrying a tool (5) comprising: - a boom (3) mounted on a frame (1), - a pendulum (4) mounted between the boom (3) and the tool ( 5), -at least one actuation mechanism (7a, 7b, 7c, 7e) at each articulation of the arm, characterized in that, the machinery comprises a device for managing the movement of the tool (5) in the space relative to the frame (1), this management device comprising: - at least one position sensor (6a, 6b, 6c, 6e) integrated into each articulation of the arm, - a central unit (9) connected to the at least one sensor (6a, 6b, 6c, 6e) for spatially positioning the tool (5) relative to the frame (1), - a coordination unit (10) connected to the central unit (9), to the user interface (8) and actuation mechanisms (7a, 7b, 7c, 7e) of the arm.

MOWER-BRUSHCUTTER WITH HYDRAULIC CYLINDERS WITH ELECTRONIC MANAGEMENT

A hedge and grass cutter comprises a frame and a cutting head 2 arranged at the end of an articulated arm 3. The hedge and grass cutter is characterized in that the cutting head and the articulated arm are moved in space by means of at least one hydraulic jack 8 the stroke of which is servo-controlled in a closed loop in speed and in position via a proportional control, the at least one hydraulic jack is associated with at least one sensor 9 and a control device for the purpose of electronic management. The electronic management makes possible to determine in real time the position of at least one hydraulic jack actuating the articulated arm. The electronic management allows end-of-travel damping of the hydraulic jack.

METHOD FOR ESTIMATING INFORMATION REPRESENTATIVE OF A HEIGHT

L'invention concerne un procédé d'estimation d'une information représentative d'une hauteur. Afin de réduire les temps de calcul nécessaires, le procédé comprend les étapes : - sélection d'un premier point parmi une pluralité de points d'une carte de normales, une normale étant associée à chacun des points de ladite pluralité, une hauteur de référence étant associée audit premier point ; - estimation d'une différence de hauteur entre le premier point et un deuxième point de la carte de normales différent du premier point (P1) en fonction de la normale (302) associée au deuxième point (P2) et de la distance (3011) séparant le premier point (P1) du deuxième point (P2) dans la carte de normales. The invention relates to a method for estimating information representative of a height. In order to reduce the necessary calculation times, the method comprises the steps of: - selecting a first point from among a plurality of points of a map of normals, a normal being associated with each of the points of said plurality, a reference height being associated with said first point; estimating a difference in height between the first point and a second point of the map of normals different from the first point (P1) as a function of the normal (302) associated with the second point (P2) and the distance (3011) separating the first point (P1) from the second point (P2) in the normal map.

MOWER-BRUSHCUTTER WITH HYDRAULIC CYLINDERS WITH ELECTRONIC MANAGEMENT

La présente invention concerne une faucheuse-débroussailleuse comportant un bâti et comprenant une tête de coupe (2) placée à l'extrémité d'un bras articulé (3). La faucheuse-débroussailleuse est caractérisée par le fait que ladite tête de coupe (2) et ledit bras articulé (3) sont déplacés dans l'espace au moyen d'au moins un vérin hydraulique (8, 13) dont la course est asservie en boucle fermée en vitesse et ou en position via une commande proportionnelle, auquel sont associés au moins un capteur (9, 10) et un dispositif de contrôle en vue d'obtenir une gestion électronique. La gestion électronique permet notamment de déterminer en temps réel la position d'au moins un vérin hydraulique (8, 13) actionnant ledit bras articulé (3). The present invention relates to a mower-brush cutter comprising a frame and comprising a cutting head (2) placed at the end of an articulated arm (3). The mower-brush cutter is characterized in that said cutting head (2) and said articulated arm (3) are displaced in space by means of at least one hydraulic cylinder (8, 13) whose stroke is controlled by closed loop in speed and or position via a proportional control, which are associated at least one sensor (9, 10) and a control device for electronic management. The electronic management makes it possible in particular to determine in real time the position of at least one hydraulic cylinder (8, 13) actuating said articulated arm (3).

PERFECTED HEDGE SIZE MACHINE

La présente invention concerne une tailleuse de haies (1) comportant un carter (4) portant des organes de coupe (5) animés en rotation au moyen d'un moteur (9) d'entraînement transmettant son mouvement par l'intermédiaire d'une transmission, la tailleuse de haies (1) étant caractérisée en ce que la transmission comporte des engrenages (12) placés dans le carter (4) et un système interne (13) permettant de faire circuler un lubrifiant à l'intérieur dudit carter (4) durant le travail. The present invention relates to a hedge trimmer (1) comprising a housing (4) carrying cutters (5) rotated by means of a motor (9) transmitting its movement via a transmission, the hedge trimmer (1) being characterized in that the transmission comprises gears (12) placed in the housing (4) and an internal system (13) for circulating a lubricant inside said housing (4). ) during work.

Light diffusion quantity estimating method for e.g. game console in post-production studio, involves estimating quantity of light diffused by medium along light diffusion direction from estimated coefficients

The method involves estimating values representing reduction of light intensity by a ray sampling procedure and discretization of a heterogeneous participating medium (10) along a light diffusion direction (120). Projection coefficients in a function base are estimated from the estimated light intensity reduction values for a set of points of the medium that is located along an emission direction (110) for emission of light by a light source (11) i.e. sun. Quantity of light diffused by the medium along the light diffusion direction is estimated from the estimated coefficients.

STRUCTURE OF SPRAY RAMP OR SPREADING AND SPRAYER OR SPREADER WITH SUCH RAMP

La présente invention a pour objet une structure de rampe (1) de pulvérisation ou d'épandage comprenant deux mâts latéraux (3) formés chacun d'au moins un tronçon (4), chaque tronçon (4) ou au moins un des tronçons (4) de chaque mât latéral (3) étant constitué d'un assemblage d'éléments allongés (5, 6, 7) comprenant, d'une part, un tube longitudinal sommital (5), d'autre part, au moins un tube longitudinal inférieur (6) et, enfin, des éléments d'entretoisement (7), formant tirants et étrésillons, s'étendant entre le tube sommital (5) et ledit au moins un tube inférieur (6), en les reliant. Structure de rampe (1) caractérisée en ce que chaque tube longitudinal (5, 6) présente au moins une excroissance (8) radiale, profilée dans la direction longitudinale du tube (5, 6) considéré, et comportant plusieurs ouvertures espacées le long dudit tube (5, 6), constituant chacune un site de solidarisation pour une extrémité d'au moins un élément d'entretoisement (7). The subject of the present invention is a spray or spreading ramp structure (1) comprising two lateral masts (3) each formed of at least one section (4), each section (4) or at least one of the sections ( 4) of each lateral mast (3) consisting of an assembly of elongated elements (5, 6, 7) comprising, on the one hand, a top longitudinal tube (5), on the other hand, at least one tube lower longitudinal section (6) and, finally, bracing elements (7), forming tie rods and struts, extending between the top tube (5) and said at least one lower tube (6), connecting them. Ramp structure (1) characterized in that each longitudinal tube (5, 6) has at least one radial protuberance (8), profiled in the longitudinal direction of the tube (5, 6) considered, and having a plurality of spaced apertures along said tube (5, 6), each constituting a solidarization site for one end of at least one spacer element (7).

Mower-brush cutter device and motorized rolling machine equipped with such a device

Dispositif de faucheuse-débroussailleuse et engin roulant motorisé équipé d’un tel dispositif L’invention a pour objet un dispositif de faucheuse-débroussailleuse (1) apte et destiné à être porté par un véhicule, notamment pour être monté sur un attelage trois-points à l’arrière d’un tracteur ou sur un véhicule automoteur adapté, ce dispositif (1) comprenant un bâti support (4) destiné à être relié à l’attelage, un bras articulé (5) comportant une flèche (5’) et un balancier (5’’) et un outil (6) solidarisé par l’intermédiaire d’une liaison (7) articulée à trois axes de rotation (7’, 7’’, 7’’’) avec l’extrémité libre du balancier (5’’), opposée à la flèche (5’), ces axes étant mutuellement perpendiculaires deux à deux. Dispositif (1) caractérisé en ce qu’il comprend des moyens (8, 9, 10) de détection, de gestion et d’actionnement configurés pour asservir, en utilisation, l’un des trois axes de rotation (7’, 7’’, 7’’’) précités selon une orientation verticale ou perpendiculaire au sol. Figure à publier avec l’abrégé : Fig. 1 Device for mower-brush cutter and motorized rolling machine equipped with such a device The subject of the invention is a mower-brush cutter device (1) suitable and intended to be carried by a vehicle, in particular to be mounted on a three-point hitch at the rear of a tractor or on a suitable self-propelled vehicle, this device (1) comprising a support frame (4) intended to be connected to the coupling, an articulated arm (5) comprising an arrow (5 ') and a balance (5 '') and a tool (6) secured by means of a link (7) articulated with three axes of rotation (7 ', 7' ', 7' '') with the free end of the balance (5 ''), opposite the arrow (5 '), these axes being mutually perpendicular two by two. Device (1) characterized in that it comprises means (8, 9, 10) for detection, management and actuation configured to control, in use, one of the three axes of rotation (7 ', 7' ', 7' '') ...

Cutting machine

La présente invention concerne une machine (1) de coupe comportant un carter (6) portant des organes de coupe (7a, 7b, 7c, 7d) animés en rotation au moyen d'une transmission (10) et décrivant, au cours de leur rotation, des trajectoires de coupe (14) s'étendant en avant du carter (6), au moins un premier organe de coupe (7a respectivement 7c) et un deuxième organe de coupe (7b respectivement 7d) adjacent au premier organe de coupe (7a respectivement 7c) comportant chacun un plateau (13) portant chacun au moins un couteau (9), et au moins un couteau (9) étant un couteau pivotant monté à pivotement autour d'un axe (16) solidaire du plateau (13) correspondant et permettant audit couteau pivotant de s'escamoter par pivotement autour dudit axe (16). Selon l'invention, au cours de la rotation des organes de coupe (7a, 7b, 7c, 7d), un couteau (9) du premier organe de coupe (7a respectivement 7c) chevauche un autre couteau (9) du deuxième organe de coupe (7b respectivement 7d), en avant du carter (6).

METHOD FOR GRABING AND EXTRACTING THE CONNECTION MEANS FROM A BUNDLE, AND A MACHINE INTENDED FOR LOADING, UNDOING, DISTRIBUTING AND/OR TRANSFORMING SUCH BUNDLE AND PROVIDED WITH A GRASPING AND EXTRACTION DEVICE

A presente invenção se refere a um método para agarrar e extrair o meio de ligação de um feixe (B) carregado numa máquina destinada a carregar, desfazer, distribuir e/ou transformar tal feixe (B) mantido em forma por um meio de ligação que se estende ao nível de sua superfície externa (S). Consiste, a partir de tal máquina que compreende ainda um dispositivo de agarre e extração, compreendendo um meio de agarre e meios de extração, em deslocar o meio de agarre de uma primeira posição afastada da superfície externa (S) do feixe (B) para uma segunda posição no nível da superfície externa (S), depois agarrar esta última usando o dito meio de agarre e extrair o meio de ligação, afastando-o da dita superfície externa. Também tem por objeto tal máquina adequada à implementação do dito método. The present invention relates to a method for gripping and extracting the connecting means from a bundle (B) loaded into a machine designed to load, undo, distribute and/or transform said bundle (B) held in shape by a connecting means that extends to the level of its outer surface (S). It consists, from such a machine which further comprises a gripping and extraction device, comprising gripping means and extraction means, in moving the gripping means from a first position away from the external surface (S) of the beam (B) to a second position at the level of the external surface (S), then gripping the latter using said gripping means and extracting the connecting means, moving it away from said external surface. It also has as its object such a suitable machine for the implementation of said method.

Total light amount estimating method for studio, involves repeating estimation of amount of light and total amount of light during modification of light parameter of light source, and recording amount of light partially received by point

The method involves recording amount of light partially received by a point (P) corresponding to sum of lights received from light sources (101-105) to exception of another light source (100). The amount of the light received by the point of the latter light source is estimated. The amount of total light received by the point is estimated by adding amount of the light received from the latter light source to the amount of partial light. The estimation of amount of light and the total amount of light are repeated during modification of a light parameter of former light sources.

SPRAYING OR SPREADING RAMP STRUCTURE AND MACHINE INCLUDING SUCH STRUCTURE

La présente invention a pour objet une structure de rampe de pulvérisation comprenant un tronçon central (2) et deux mâts latéraux (3, 3') disposés de part et d'autre du tronçon central (2) et formés chacun d'au moins un tronçon, chaque tronçon (4) présentant une forme prismatique à section triangulaire, avec une hauteur continûment décroissante d'une extrémité à l'autre du tronçon (4) considéré et étant constitué d'un assemblage tubulaire comprenant un tube longitudinal sommital et deux tubes longitudinaux inférieurs (6) et des éléments de liaison (7, 7') formant tirants et étrésillons, s'étendant entre le tube sommital et les deux tubes inférieurs (6). Structure de rampe caractérisée en ce que l'écartement entre les deux tubes inférieurs (6) varie de manière similaire à la hauteur d'une extrémité longitudinale à l'autre du tronçon (4) concerné. The present invention relates to a spray boom structure comprising a central section (2) and two side poles (3, 3 ') arranged on either side of the central section (2) and each formed of at least one section, each section (4) having a prismatic shape with a triangular section, with a continuously decreasing height from one end to the other of the section (4) considered and consisting of a tubular assembly comprising a top longitudinal tube and two tubes lower longitudinal (6) and connecting elements (7, 7 ') forming tie rods and struts, extending between the top tube and the two lower tubes (6). Ramp structure characterized in that the spacing between the two lower tubes (6) varies similarly to the height from one longitudinal end to the other of the section (4) concerned.

Device for controlling one or more work function(s) of an agricultural machine and agricultural machine fitted with said control device

Dispositif de commande d’une ou plusieurs fonction(s) de travail d’une machine agricole et machine agricole munie dudit dispositif de commande. La présente invention a pour objet un dispositif de commande d’une ou plusieurs fonction(s) de travail d’une machine agricole, ledit dispositif s’étendant le long d’un axe (X1) sensiblement vertical et comprenant une poignée (1) de commande, du type manche ou levier, s’étendant le long d’un axe (X2) de poignée et une embase (2), ladite poignée (1) étant délimitée longitudinalement par une extrémité inférieure et une extrémité supérieure (1b) entre lesquelles s’étend une partie principale de préhension (1c) de la poignée (1). Il comprend en outre un système de maintien permettant de renforcer le maintien de la main (M) essentiellement contre la partie principale de préhension (1c) et comprenant deux surfaces d’appui (40a, 40b) superposées et écartées l’une de l’autre en s’étendant latéralement à l’extérieur de la partie principale de préhension (1c) de la poignée (1). Elle a également pour objet une machine agricole munie dudit dispositif de commande. Figure à publier avec l’abrégé : Fig. 3 Device for controlling one or more work function(s) of an agricultural machine and agricultural machine equipped with said control device. The subject of the present invention is a device for controlling one or more work function(s) of an agricultural machine, said device extending along a substantially vertical axis (X1) and comprising a handle (1) control, of the handle or lever type, extending along a handle axis (X2) and a base (2), said handle (1) being delimited longitudinally by a lower end and an upper end (1b) between which extends a main gripping part (1c) of the handle (1). It further comprises a holding system making it possible to reinforce the holding of the hand (M) essentially against the main gripping part (1c) and comprising two support surfaces (40a, 40b) superimposed and separated from one another. another extending ...

Method for estimating quantity of light diffused by cloud, involves estimating light quantity diffused by sampling of participating media along light diffusion direction, where sampling is function of selected spatial subdivision level

The method involves selecting a spatial subdivision level of a heterogeneous participating media (2) from multiple hierarchical spatial subdivision levels along error information representing an attenuation difference of light in the participating media. Light quantity diffused by sampling of the participating media along a light diffusion direction (120) is estimated, where the sampling is a function of the selected spatial subdivision level.

SPRAYING OR DISPERSIONING BAR STRUCTURE AND MACHINE THAT CARRIES SUCH STRUCTURE

A presente invenção se refere a uma estrutura de rampa de pulverização que compreende um segmento central (2) e dois mastros laterais (3, 3?) dispostos de uma ponta à outra do segmento central (2) e formados, cada um, por pelo menos um segmento, com cada segmento (4) apresentando uma forma prismática com secção triangular, com altura continuamente decrescente de uma extremidade à outra do segmento (4) considerado e sendo constituído por uma montagem tubular que compreende um tubo longitudinal dominante e dois tubos longitudinais inferiores (6) e elementos de conexão (7, 7?), que formam tirantes e escoras e se estendem entre o tubo dominante e os dois tubos inferiores (6). Uma estrutura de rampa caracterizada pelo fato de que o afastamento entre os dois tubos inferiores (6) varia semelhantemente à altura de uma extremidade longitudinal à outra do segmento (4) dito.

Method and device for compiling a source program

The invention is related to a method for compiling a source program (50) comprising first rule(s) not supported by a target environment (501). As to enable the first rule(s) to be executed on the target environment (501), the method comprising the steps of: - generating a directed graph representative of the source program, - generating a first data structure (52), the first data structure corresponding to a flat representation of said directed graph, said first data structure comprising at least a first identifier associated with the at least a first rule, - generating a second data structure (53) comprising first instructions adapted for interpreting the first data structure (52) by using the at least a first identifier, said instructions being coded into a code supported by the target environment (501). The invention is also related to a corresponding device and computer program product.

Agricultural machine for the distribution of products for the feeding of animals and/or the formation of their litter

La présente invention a pour objet une machine agricole de distribution de produits pour l'alimentation des animaux et/ou la formation de leur litière, la machine comprenant un caisson (1) de réception des produits, une turbine de distribution, un espace de projection (2a) des produits, un organe rotatif (3) muni de pales (3a) monté dans l'espace de projection (2a), un arbre d'entraînement (4) de l'organe rotatif (3) et un système convoyeur et/ou démêleur (9, 10). Elle comprend un indicateur rotatif (5) disposé en dehors de l'espace de projection (2a) en étant apte à être entraîné en rotation, directement ou indirectement, par l'arbre d'entraînement (4) de sorte à transmettre à un utilisateur, par son propre effet visuel de rotation, une indication visuelle sur la rotation de l'organe rotatif (3).

VIDEO COMPOSITION DEVICE

L'invention concerne un dispositif de composition vidéo comprenant - des moyens de rendu (2) destinés à composer une vidéo à partir d'une pluralité de vidéos reçues, - des moyens d'interface (7) recevant des informations relatives à la composition des dites vidéos et transmettant une première commande aux moyens de rendu (2), Selon l'invention, le dispositif comprend - des moyens de reformatage (410) recevant en entrée ladite pluralité de vidéos et destinés à reformater ladite pluralité de vidéos, et à transmettre ladite pluralité de vidéos reformatées auxdits moyens de rendu (2) à travers au moins un bus de données (5, 6), lesdits moyens d'interface (7) transmettant une seconde commande aux moyens de reformatage (410), ladite seconde commande étant destinée à contrôler les moyens de reformatage (410) de ladite pluralité de vidéos de manière à diminuer la quantité de données transmises sur le au moins un bus de données (5, 6).

METHOD FOR ESTIMATING OCCULTATION IN A VIRTUAL ENVIRONMENT

L'invention concerne un procédé d'estimation de l'occultation dans un environnement virtuel comprenant au moins deux objets et observé depuis un point de vue. Afin de minimiser les temps de calculs nécessaires, le procédé comprend les étapes de : - estimation d'une deuxième information représentative de la distance séparant un deuxième fragment d'un deuxième objet dudit point de vue selon une direction d'observation ; - comparaison de ladite deuxième information à une première information représentative de la distance séparant un premier fragment d'un premier objet dudit point de vue selon ladite direction d'observation et stockée dans une première mémoire tampon : • si la deuxième information est inférieure à la première information, estimation d'une troisième information représentative d'attributs associés au deuxième fragment, stockage de la deuxième information dans une deuxième mémoire tampon et stockage de la troisième information dans une troisième mémoire tampon, • si la deuxième information est supérieure à la première information, stockage de la première information dans la deuxième mémoire tampon. The invention relates to a method for estimating occultation in a virtual environment comprising at least two objects and observed from a point of view. In order to minimize the necessary calculation times, the method comprises the steps of: estimating a second piece of information representative of the distance separating a second fragment from a second object from said point of view in an observation direction; comparing said second information with first information representative of the distance separating a first fragment of a first object from said point of view along said observation direction and stored in a first buffer memory: if the second information is less than the first information, estimating third information representative of attributes associated with the second fragment, storing the second information ...

SPRAY OR SPINNING RAMP STRUCTURE AND MACHINE COMPRISING SUCH A STRUCTURE

La présente invention a pour objet une structure de rampe de pulvérisation comprenant un tronçon central (2) et deux mâts latéraux (3, 3') disposés de part et d'autre du tronçon central (2) et formés chacun d'au moins un tronçon, chaque tronçon (4) présentant une forme prismatique à section triangulaire, avec une hauteur continûment décroissante d'une extrémité à l'autre du tronçon (4) considéré et étant constitué d'un assemblage tubulaire comprenant un tube longitudinal sommital et deux tubes longitudinaux inférieurs (6) et des éléments de liaison (7, 7') formant tirants et étrésillons, s'étendant entre le tube sommital et les deux tubes inférieurs (6). Structure de rampe caractérisée en ce que l'écartement entre les deux tubes inférieurs (6) varie de manière similaire à la hauteur d'une extrémité longitudinale à l'autre du tronçon (4) concerné. The present invention relates to a spray boom structure comprising a central section (2) and two lateral masts (3, 3 ') arranged on either side of the central section (2) and each formed of at least one section, each section (4) having a prismatic shape with triangular section, with a continuously decreasing height from one end to the other of the section (4) considered and consisting of a tubular assembly comprising a top longitudinal tube and two tubes lower longitudinal members (6) and connecting elements (7, 7 ') forming tie rods and struts, extending between the top tube and the two lower tubes (6). Ramp structure characterized in that the spacing between the two lower tubes (6) varies similarly to the height of one longitudinal end to the other of the section (4) concerned.

Method for estimating light scattering

L'invention concerne un procédé d'estimation de la quantité de lumière diffusée par un milieu participant hétérogène (2). Afin d'optimiser le rendu tout en minimisant les temps de calculs nécessaires, le procédé comprend les étapes de : - sélection d'au moins un niveau de subdivision spatiale dudit milieu (2) parmi une pluralité de niveaux hiérarchiques de subdivision spatiale selon au moins une information d'erreur représentative d'une différence d'atténuation de la lumière dans ledit milieu selon au moins une direction (120) entre deux niveaux hiérarchiques consécutifs, - estimation de la quantité de lumière diffusée par échantillonnage dudit milieu (2) le long d'au moins une direction de diffusion (120), l'échantillonnage étant fonction du au moins un niveau de subdivision spatiale sélectionné.

Method for estimation of occlusion in a virtual environment

The invention relates to a method for estimation of occlusion in a virtual environment comprising at least two objects and observed from a viewpoint. In order to minimize the required calculation time, the method comprises steps for: estimating a second item of information representative of the distance separating a second fragment of a second object from said viewpoint according to an observation direction, comparing of said second item of information with a first item of information representative of the distance separating a first fragment of a first object from said viewpoint according to said observation direction and stored in a first buffer memory: · if the second item of information is less than the first item of information, the estimation of a third item of information representative of attributes associated with the second fragment, storage of the second item of information in a second buffer memory and storage of the third item of information in a third buffer memory, • if the second item of information is greater than the first item of information, storage of the first item of information in the second buffer memory.

DEVICE FOR FASTENING KNIFE ON THE ROTOR OF A MOWER-BRUSHCUTTER

A device for attaching the blade to the rotor in a mower / brushcutter

Mower-brush cutter device and motorized rolling machine equipped with such a device

Dispositif de faucheuse-débroussailleuse et engin roulant motorisé équipé d’un tel dispositif L’invention a pour objet un dispositif de faucheuse-débroussailleuse (1) apte et destiné à être porté par un véhicule, notamment pour être monté sur un attelage trois-points à l’arrière d’un tracteur ou sur un véhicule automoteur adapté, ce dispositif (1) comprenant un bâti support (4) destiné à être relié à l’attelage, un bras articulé (5) comportant une flèche (5’) et un balancier (5’’) et un outil (6) solidarisé par l’intermédiaire d’une liaison (7) articulée à trois axes de rotation (7’, 7’’, 7’’’) avec l’extrémité libre du balancier (5’’), opposée à la flèche (5’), ces axes étant mutuellement perpendiculaires deux à deux. Dispositif (1) caractérisé en ce qu’il comprend des moyens (8, 9, 10) de détection, de gestion et d’actionnement configurés pour asservir, en utilisation, l’un des trois axes de rotation (7’, 7’’, 7’’’) précités selon une orientation verticale ou perpendiculaire au sol. Figure à publier avec l’abrégé : Fig. 1 A mower-brush cutter device and motorized rolling machine equipped with such a device The subject of the invention is a mower-brush cutter device (1) suitable and intended to be carried by a vehicle, in particular to be mounted on a three-point hitch at the rear of a tractor or on a suitable self-propelled vehicle, this device (1) comprising a support frame (4) intended to be connected to the coupling, an articulated arm (5) comprising an arrow (5 ') and a balance (5 '') and a tool (6) secured by means of a link (7) articulated with three axes of rotation (7 ', 7' ', 7' '') with the free end of the balance (5 ''), opposite the arrow (5 '), these axes being mutually perpendicular two by two. Device (1) characterized in that it comprises means (8, 9, 10) for detection, management and actuation configured to control, in use, one of the three axes of rotation (7 ', 7' ', 7' '') ...

Method for estimating light scattering

The invention relates to a method for estimating the amount of light scattered by a heterogeneous participating medium (10), the light being emitted by a light environment including a plurality of light sources. In order to improve the rendering while minimizing the necessary calculation times, the method includes the steps of: estimating first projection coefficients within an orthonormal spherical function base, said first projection coefficients representing the reduction of light intensity in one point (34) of said medium, said estimation of the first projection coefficients being carried out for each point of a first set of points of said medium, and estimating the amount of light scattered by said medium, in at least one direction (120) of light scattering, on the basis of said first estimated projection coefficients.

Concurrent hash map updates

Approaches in accordance with various embodiments can perform spatial hash map updates while ensuring the atomicity of the updates for arbitrary data structures. A hash map can be generated for a dataset where entries in the hash map may correspond to multiple independent values, such as pixels of an image to be rendered. Update requests for independent values may be received on multiple concurrent threads, but change requests for independent values corresponding to a hash map entry can be aggregated from a buffer and processed iteratively in a single thread for a given hash map entry. In the case of multi-resolution spatial hashing where data can be stored at various discretization levels, this operation can be repeated to propagate changes from one level to another.

Method for generating shadows in an image

Visibility-based environment importance sampling for light transport simulation systems and applications

Systems and methods to implement a technique for determining an environment importance sampling function. An environment map may be provided where lighting information about the environment is known, but where certain pixels within a scene associated with the environment map are shaded. From these shaded pixels, rays may be drawn in random directions to determine whether the rays are occluded or can interact with the environment map, which provides an indication of a source of lighting that can be used for light transport simulations. A mask may be generated based on these occlusions and used to update the environment importance sampling function.

Dispositif de commande d’une ou plusieurs fonction(s) de travail d’une machine agricole et machine agricole munie dudit dispositif de commande

Dispositif de commande d’une ou plusieurs fonction(s) de travail d’une machine agricole et machine agricole munie dudit dispositif de commande. La présente invention a pour objet un dispositif de commande d’une ou plusieurs fonction(s) de travail d’une machine agricole, ledit dispositif s’étendant le long d’un axe (X1) sensiblement vertical et comprenant une poignée (1) de commande, du type manche ou levier, s’étendant le long d’un axe (X2) de poignée et une embase (2), ladite poignée (1) étant délimitée longitudinalement par une extrémité inférieure et une extrémité supérieure (1b) entre lesquelles s’étend une partie principale de préhension (1c) de la poignée (1). Il comprend en outre un système de maintien permettant de renforcer le maintien de la main (M) essentiellement contre la partie principale de préhension (1c) et comprenant deux surfaces d’appui (40a, 40b) superposées et écartées l’une de l’autre en s’étendant latéralement à l’extérieur de la partie principale de préhension (1c) de la poignée (1). Elle a également pour objet une machine agricole munie dudit dispositif de commande. Figure à publier avec l’abrégé : Fig. 3

Rotor pour appareil de débroussaillage

Procede d'estimation de diffusion de la lumiere

L'invention concerne un procédé d'estimation de la quantité de lumière diffusée par un milieu participant hétérogène (10). Afin d'améliorer le rendu tout en minimisant les temps de calculs nécessaires, le procédé comprend les étapes de : - estimation de coefficients de projection dans une base de fonction à partir de valeurs représentative de densité pour un ensemble de points (13) dudit milieu situés le long d'au moins une direction d'émission (110) de lumière par une source lumineuse (11), et - estimation de la quantité de lumière diffusée par ledit milieu (10), selon au moins une direction de diffusion (120) de la lumière, à partir desdits coefficients de projection estimés.

Sichtbarkeitsbasiertes Umgebungs-Importance-Sampling für Systeme und Anwendungen für Lichttransportsimulationen

Systeme und Verfahren zum Implementieren einer Technik zum Bestimmen einer Importance-Sampling-Funktion für eine Umgebung. Es kann eine Umgebungskarte bereitgestellt werden, in der Beleuchtungsinformationen über die Umgebung bekannt sind, wobei jedoch bestimmte Pixel innerhalb einer Szene, die der Umgebungskarte zugeordnet ist, schattiert sind. Von diesen schattierten Pixeln können Strahlen in zufälligen Richtungen gezogen werden, um zu bestimmen, ob die Strahlen verdeckt sind oder mit der Umgebungskarte interagieren können, was eine Indikation für eine Lichtquelle bereitstellt, die für Lichttransportsimulationen verwendet werden kann. Basierend auf diesen Verdeckungen kann eine Maske generiert werden, die zur Aktualisierung der Importance-Sampling-Funktion der Umgebung verwendet wird.

Procédé de préhension et d’extraction du moyen de liaison d’une botte et machine destinée à charger, défaire, distribuer et/ou transformer une telle botte et munie d’un dispositif de préhension et d’extraction

Procédé de préhension et d’extraction du moyen de liaison d’une botte et machine destinée à charger, défaire, distribuer et/ou transformer une telle botte et munie d’un dispositif de préhension et d’extraction La présente invention a pour objet un procédé de préhension et d’extraction du moyen de liaison d’une botte (B) chargée dans une machine destinée à charger, défaire, distribuer et/ou transformer une telle botte (B) maintenue en forme par un moyen de liaison s’étendant au niveau de sa surface externe (S). Il consiste, à partir d’une telle machine comprenant en outre un dispositif de préhension et d’extraction comprenant un moyen de préhension et des moyens d’extraction, à déplacer le moyen de préhension depuis une première position éloignée de la surface externe (S) de la botte (B) jusqu’à une deuxième position au niveau de la surface externe (S), puis à saisir ce dernier à l’aide dudit moyen de préhension et à extraire le moyen de liaison en l’écartant de ladite surface externe. Elle a également pour objet une telle machine convenant à la mise en œuvre dudit procédé. Figure à publier avec l’abrégé : Fig. 1

Mesh topology generation using parallel processing

Various embodiments include techniques for generating topological data for a mesh included in a computer-generated environment. The mesh includes simple geometric shapes, such as triangles. The disclosed techniques identify vertices in the mesh that have the same position and have identical attributes, such as color, normal vector, and texture coordinates. The disclosed techniques further identify vertices in the mesh that have the same position but differ in one or more attributes. The techniques generate lists of the triangles that are adjacent to each vertex included in the mesh. The techniques generate a list of the unique edges included in the mesh. Further, the techniques are well suited for execution on highly parallel processors, such as graphics processing units, thereby reducing the time to generate this topological data. The topological data may then be efficiently used by other computer graphics processing operations.

Techniques for parallel edge decimation of a mesh

Various embodiments include techniques for performing parallel edge decimation on a high resolution mesh by collapsing multiple edges in parallel by blocking only the neighbor edges of the edges selected as collapse candidates. Effectively, the disclosed techniques dynamically partition the mesh into small partitions around the collapse candidates. In this manner, the techniques identify all the edges that may be independently collapsed in a single, now parallel, iteration. Edge decimation may be performed so that certain computational geometry techniques can be efficiently applied to a simpler mesh. In so doing, the disclosed techniques preserve the history of how the edge decimation process displaces the vertices of the original mesh to generate the simplified mesh. As a result, the results of the computational geometry techniques as applied to the simplified mesh can be propagated back to the original mesh.

Projective hash maps

This application discloses techniques for generating and querying projective hash maps. More specifically, projective hash maps can be used for spatial hashing of data related to N-dimensional points. Each point is projected onto a projection surface to convert the three-dimensional (3D) coordinates for the point to two-dimensional (2D) coordinates associated with the projection surface. Hash values based on the 2D coordinates are then used as an index to store data in the projective hash map. Utilizing the 2D coordinates rather than the 3D coordinates allows for more efficient searches to be performed to locate points in the 3D space. In particular, projective hash maps can be utilized by graphics applications for generating images, and the improved efficiency can, for example, enable a game streaming application on a server to render images transmitted to a user device via a network at faster frame rates.

Lock-free unordered in-place compaction

Various embodiments include techniques for lock-free, unordered in-place compaction of an array. The techniques include receiving a first array that includes a first plurality of data entries, generating a second array that includes a second plurality of data entries, and storing, in the second array, respective index positions of valid data entries included in the first array and invalid data entries included in the first array. The techniques further include determining invalid data entries included in a first portion of the first array based at least on the index positions, determining valid data entries included in a second portion of the first array based at least on the index positions, and replacing contents of the invalid data entries included in the first portion of the first array with contents of the valid data entries included in the second portion of the first array.

Spatiotemporal filtering for light transport simulation systems and applications

Approaches presented herein provide systems and methods for lighting a scene in world-space. The systems and methods may generate lighting effects based on both temporally averaged world-space lighting data and screen-space spatial filtering. The lighting data may be based on material properties for objects within an image, where different material properties may lead to larger weighting factors based on a one or more optical properties of an object surface.

Hash cell boundary shifting for light transport simulation systems and applications

Systems and methods implement a technique for altering the shape of the cells by shifting coordinates of points along cell boundaries using a set of periodic functions. To avoid having cell boundaries along the scene surfaces, wavelengths of those periodic functions are selected so they are not a multiple of an original discretization. The coordinates may be shifted along different axes of the cells and may generate different cells having a variety of different outlines to reduce a likelihood of a cell boundary being positioned along a scene boundary.

Concurrent hash map updates

Approaches in accordance with various embodiments can perform spatial hash map updates while ensuring the atomicity of the updates for arbitrary data structures. A hash map can be generated for a dataset where entries in the hash map may correspond to multiple independent values, such as pixels of an image to be rendered. Update requests for independent values may be received on multiple concurrent threads, but change requests for independent values corresponding to a hash map entry can be aggregated from a buffer and processed iteratively in a single thread for a given hash map entry. In the case of multi-resolution spatial hashing where data can be stored at various discretization levels, this operation can be repeated to propagate changes from one level to another.

Concurrent hash map updates

Approaches in accordance with various embodiments can perform spatial hash map updates while ensuring the atomicity of the updates for arbitrary data structures. A hash map can be generated for a dataset where entries in the hash map may correspond to multiple independent values, such as pixels of an image to be rendered. Update requests for independent values may be received on multiple concurrent threads, but change requests for independent values corresponding to a hash map entry can be aggregated from a buffer and processed iteratively in a single thread for a given hash map entry. In the case of multi-resolution spatial hashing where data can be stored at various discretization levels, this operation can be repeated to propagate changes from one level to another.

Gleichzeitige Hashtabellen-Aktualisierungen

Ansätze gemäß verschiedenen Ausführungsformen können räumliche Hashtabellen-Aktualisierungen durchführen, während sie gleichzeitig die Atomizität der Aktualisierungen für beliebige Datenstrukturen sicherstellen. Es kann eine Hashtabelle für einen Datensatz erzeugt werden, wobei Einträge in der Hashtabelle mehreren unabhängigen Werten entsprechen können, wie den Pixeln eines zu rendernden Bilds. Es können Aktualisierungsanforderungen für unabhängige Werte von mehreren gleichzeitigen Threads empfangen werden, jedoch können Änderungsanforderungen für unabhängige Werte, die einem Hashtabellen-Eintrag entsprechen, aus einem Puffer aggregiert und iterativ in einem einzigen Thread für einen bestimmten Hashtabellen-Eintrag verarbeitet werden. Im Fall von räumlichem Hashing mit mehreren Auflösungen, wobei Daten mit verschiedenen Diskretisierungsgraden gespeichert werden können, kann diese Operation wiederholt werden, um Änderungen von einem Grad zu einem anderen zu propagieren.

Concurrent hash map updates

Approaches in accordance with various embodiments can perform spatial hash map updates while ensuring the atomicity of the updates for arbitrary data structures. A hash map can be generated for a dataset where entries in the hash map may correspond to multiple independent values, such as pixels of an image to be rendered. Update requests for independent values may be received on multiple concurrent threads, but change requests for independent values corresponding to a hash map entry can be aggregated from a buffer and processed iteratively in a single thread for a given hash map entry. In the case of multi-resolution spatial hashing where data can be stored at various discretization levels, this operation can be repeated to propagate changes from one level to another.

Improved coupling device

Method and device for estimating light scattering

The invention is related to a method for estimating the quantity of light received by an element of at least a participating medium (11, 12, 13) belonging to a light ray (10) crossing the at least a participating medium (11, 2, 13) and having as origin a light source (1). As to optimize the estimation and the rendering of the at least a medium, the method comprises the steps 10 of: - determining a pseudo-metric function according to intersection points (111, 112; 121, 122; 131, 132) between the participating medium (11, 2, 13) and the light ray (10), the pseudo-metric function representing the distance only along the part(s) of the light ray (10) crossing the participating medium (11, 12, 13), - estimating first projection coefficients in a functions basis, said first coefficients being representative of an extinction function along said light ray (10) according to said pseudo-metric function, - estimating the quantity of light received by the element according to 20 said first projection coefficients. The invention is also related to a corresponding device and computer program product.

Erzeugung von netzoptologien durch parallelverarbeitung

Verschiedene Ausführungsformen umfassen Techniken zur Erzeugung topologischer Daten für ein Netz, das in einer computergenerierten Umgebung enthalten ist. Das Netz beinhaltet einfache geometrische Formen, wie zum Beispiel Dreiecke. Die offenbarten Techniken identifizieren Eckpunkte in dem Netz, die die gleiche Position und identische Attribute haben, wie Farbe, Normalenvektor und Texturkoordinaten. Die offenbarten Techniken identifizieren ferner Eckpunkte in dem Netz, die dieselbe Position haben, sich aber in einem oder mehreren Attributen unterscheiden. Die Techniken erzeugen Listen der Dreiecke, die an jeden im Netz enthaltenen Eckpunkt angrenzen. Die Techniken erzeugen eine Liste eindeutiger Kanten, die in dem Netz enthalten sind. Ferner eignen sich die Techniken gut zur Ausführung auf hochparallelen Prozessoren, wie beispielsweise Grafikprozessoren, wodurch die Zeit zur Erzeugung dieser topologischen Daten reduziert wird. Die topologischen Daten können dann effizient von anderen Computergrafikverarbeitungsoperationen verwendet werden.

Sperrfreie ungeordnete verdichtung an ort und stelle

Verschiedene Ausführungsformen beinhalten Techniken für sperrfreie, ungeordnete In-Place-Verdichtung eines Arrays. Die Techniken beinhalten das Empfangen eines ersten Arrays, das eine erste Vielzahl von Dateneinträgen enthält, das Erzeugen eines zweiten Arrays, das eine zweite Vielzahl von Dateneinträgen enthält, und das Speichern jeweiliger Indexpositionen von gültigen Dateneinträgen, die in dem ersten Array enthalten sind, und ungültigen Dateneinträgen, die in dem ersten Array enthalten sind, in dem zweiten Array. Die Techniken beinhalten ferner das Bestimmen ungültiger Dateneinträge, die in einem ersten Teil des ersten Arrays enthalten sind, basierend zumindest auf den Indexpositionen, das Bestimmen gültiger Dateneinträge, die in einem zweiten Teil des ersten Arrays enthalten sind, basierend zumindest auf den Indexpositionen, und das Ersetzen der Inhalte der ungültigen Dateneinträge, die in dem ersten Teil des ersten Arrays enthalten sind, durch Inhalte der gültigen Dateneinträge, die in dem zweiten Teil des ersten Arrays enthalten sind.

Concurrent hash map updates

Approaches in accordance with various embodiments can perform spatial hash map updates while ensuring the atomicity of the updates for arbitrary data structures. A hash map can be generated for a dataset where entries in the hash map may correspond to multiple independent values, such as pixels of an image to be rendered. Update requests for independent values may be received on multiple concurrent threads, but change requests for independent values corresponding to a hash map entry can be aggregated from a buffer and processed iteratively in a single thread for a given hash map entry. In the case of multi-resolution spatial hashing where data can be stored at various discretization levels, this operation can be repeated to propagate changes from one level to another.

Method for representing a participating media in a scene and corresponding device

The invention relates to a method for rendering a participating media (10) delimited by a bounding box (30) and rendered from a viewpoint (14), the media (10) being at a determined distance from the viewpoint according to a viewing direction. In order to represent the limits of the participating media, the method comprises steps of: - for at least one point (300) of the volume formed by said bounding box (30), estimation of a set of directions (31 to 3i) having for origin said at least one point (300): - for each direction (31 to 3i), estimation of a first intersection point (31m), corresponding to the intersection between said direction and said participating media (10), for which the associated density value is greater than a first threshold value, and - estimation of third intersection points, corresponding to the intersections between said viewing direction and said participating media, from an item of information representative of distances separating the first intersection point (31m) from a second intersection point (310) corresponding to the intersection between the direction and the bounding box (30) for each direction of the at least one part of the set of estimated directions (31 to 3i). The invention also relates to a corresponding device.

Räumlich-zeitliches filtern für lichttransportsimulationssysteme und-anwendungen

Hierin vorgestellte Ansätze stellen Systeme und Verfahren zum Beleuchten einer Szene im Welt-Raum bereit. Die Systeme und Verfahren können Beleuchtungseffekte basierend sowohl auf zeitlich gemittelten Welt-Raum-Beleuchtungsdaten als auch auf räumlichem Bildschirm-Raum-Filtern generieren. Die Beleuchtungsdaten können auf Materialeigenschaften für Objekte innerhalb eines Bildes basieren, wobei unterschiedliche Materialeigenschaften zu größeren Gewichtungsfaktoren führen können, basierend auf einer oder mehreren optischen Eigenschaften einer Objektoberfläche.

Method for estimation of information representative of a pixel of a virtual object

The invention relates to a method for estimation of information representative of a pixel of a virtual object. In order to improve the rendering while minimising the required calculation time, the method comprises steps for: - defining a first surface element (122) associated with said pixel according to a direction of observation (123) of the virtual object, said first surface element (122) belonging to a representation of said virtual object according to a first level of detail, - associating a second surface element (203) with said first surface element (122), said second surface element (203) being determined by intersection between said direction of observation (123) and a first parametric surface (202) representing the virtual object according to a second level of detail, - estimating (73) said information representative of said pixel according to said second surface element (203) and information (204) associated with said second surface element enabling the virtual object to be represented according to a third level of detail.

Techniken zur parallelen kantendezimierung eines netzes

Verschiedene Ausführungsformen umfassen Techniken zur Durchführung einer parallelen Kantendezimierung an einem hochauflösenden Netz durch paralleles Kollabieren mehrerer Kanten, indem nur die benachbarten Kanten der Kanten, die als Kollabierungskandidaten ausgewählt wurden, gesperrt werden. Die offenbarten Techniken partitionieren das Netz um die Kollabierungskandidaten dynamisch in kleine Partitionen. Auf diese Weise werden alle Kanten identifiziert, die in einer einzigen, nun parallelen Iteration unabhängig voneinander kollabiert werden können. Die Kantendezimierung kann so durchgeführt werden, dass gewisse Techniken der algorithmischen Geometrie auf ein einfacheres Netz effizient anwendbar sind. Dabei bewahren die offenbarten Techniken die Historie, wie der Kantendezimierungsprozess die Eckpunkte des ursprünglichen Netzes verschoben hat, um das vereinfachte Netz zu generieren. Dadurch können die Ergebnisse der Techniken der algorithmischen Geometrie, die auf das vereinfachte Netz angewandt wurden, zum ursprünglichen Netz rückpropagiert werden.

Procede d'estimation de diffusion de la lumiere

L'invention concerne un procédé de la quantité de lumière diffusée par un milieu participant hétérogène (10), la lumière étant émise par un environnement lumineux comprenant une pluralité de sources lumineuses. Afin d'améliorer le rendu tout en minimisant les temps de calculs nécessaires, Ie procédé comprend les étapes de : estimation de premiers coefficients de projection dans une base orthonormée de fonctions sphériques, lesdits premiers coefficients de projection étant représentatifs de la réduction d'intensité lumineuse en un point (34) dudit milieu, ladite estimation des premiers coefficients de projection étant réalisée pour chaque point d'un premier ensemble de points dudit milieu, et estimation de la quantité de lumière diffusée par ledit milieu, selon au moins une direction de diffusion de la lumière (120), à partir desdits premiers coefficients de projection estimés,

Rotor til buskrydder

Concurrent dataset updates using hash maps

Approaches in accordance with various embodiments can perform spatial hash map updates while ensuring the atomicity of the updates for arbitrary data structures. A hash map can be generated for a dataset where entries in the hash map may correspond to multiple independent values, such as pixels of an image to be rendered. Update requests for independent values may be received on multiple concurrent threads, but change requests for independent values corresponding to a hash map entry can be aggregated from a buffer and processed iteratively in a single thread for a given hash map entry. In the case of multi-resolution spatial hashing where data can be stored at various discretization levels, this operation can be repeated to propagate changes from one level to another.