Patents by Inventor Arnaud Bourge
Arnaud Bourge has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11915438Abstract: The method of determination of a depth map of a scene comprises generation of a distance map of the scene obtained by time of flight measurements, acquisition of two images of the scene from two different viewpoints, and stereoscopic processing of the two images taking into account the distance map. The generation of the distance map includes generation of distance histograms acquisition zone by acquisition zone of the scene, and the stereoscopic processing includes, for each region of the depth map corresponding to an acquisition zone, elementary processing taking into account the corresponding histogram.Type: GrantFiled: September 17, 2021Date of Patent: February 27, 2024Assignee: STMicroelectronics FranceInventors: Manu Alibay, Olivier Pothier, Victor Macela, Alain Bellon, Arnaud Bourge
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Patent number: 11641523Abstract: An image sensor includes a plurality of pixels, where each of the plurality of pixels includes a photodiode. The image sensor is configured to capture images of a scene exposed with a flickering light source by for each of the plurality of pixels, acquiring a value representative of a light level at a corresponding pixel by gradually varying a value of sensitivity of the corresponding pixel.Type: GrantFiled: October 27, 2021Date of Patent: May 2, 2023Assignees: STMicroelectronics SA, STMicroelectronics (Grenoble 2) SASInventors: Arnaud Bourge, Tarek Lule, Gregory Roffet
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Publication number: 20230010182Abstract: In an embodiment an apparatus includes a scanning photographic sensor configured to acquire an image, according to an integration time of the sensor, of a scene illuminated with periodically emitted light pulses by a source, so that the image has a regular succession of bands with different luminosities when the integration time of the sensor is different from a period of the light pulses, a processor configured to generate a signature vector representative of the regular succession of bands with different luminosities being present in the image acquired by the photographic sensor, wherein the signature vector is independent of a reflectance of an objects of the scene and of a level of light in the scene, determine a frequency of the bands in the image on basis of the generated signature vector and determine the period of the pulses of the source on basis of the determined frequency of the bands in the image, and a controller configured to adjust the integration time of the photographic sensor so that the intType: ApplicationFiled: June 24, 2022Publication date: January 12, 2023Inventors: Arnaud Bourge, Tanguy Le Dauphin, Antoine Drouot, Brian Douglas Stewart
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Publication number: 20220308173Abstract: Method, having detecting from a first histogram signal delivered by a sensor device, successive sets of targets at respective successive instants, determining for a current set of current detected targets, a current histogram output, the current histogram output having for each current detected target of the current set, a current group of parameters stored in a memory including a confidence indicator, performing a matching operation between the current set of detected targets and previous sets of detected targets stored in the memory, and performing a filtering operation of at least one parameter of the current group of parameters of at least some of the current detected targets of the current set, on the basis of the result of the matching operation, the filtering operation being weighted on the basis of at least the confidence indicators of current and previous sets of detected targets.Type: ApplicationFiled: March 21, 2022Publication date: September 29, 2022Inventors: Olivier Pothier, Victor Macela, Thierry Lebihen, Arnaud Bourge
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Publication number: 20220053119Abstract: An image sensor includes a plurality of pixels, where each of the plurality of pixels includes a photodiode. The image sensor is configured to capture images of a scene exposed with a flickering light source by for each of the plurality of pixels, acquiring a value representative of a light level at a corresponding pixel by gradually varying a value of sensitivity of the corresponding pixel.Type: ApplicationFiled: October 27, 2021Publication date: February 17, 2022Inventors: Arnaud Bourge, Tarek Lule, Gregory Roffet
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Publication number: 20220005214Abstract: The method of determination of a depth map of a scene comprises generation of a distance map of the scene obtained by time of flight measurements, acquisition of two images of the scene from two different viewpoints, and stereoscopic processing of the two images taking into account the distance map. The generation of the distance map includes generation of distance histograms acquisition zone by acquisition zone of the scene, and the stereoscopic processing includes, for each region of the depth map corresponding to an acquisition zone, elementary processing taking into account the corresponding histogram.Type: ApplicationFiled: September 17, 2021Publication date: January 6, 2022Inventors: Manu Alibay, Olivier Pothier, Victor Macela, Alain Bellon, Arnaud Bourge
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Patent number: 11184555Abstract: An image sensor includes a plurality of pixels, where each of the plurality of pixels includes a photodiode. The image sensor is configured to capture images of a scene exposed with a flickering light source by for each of the plurality of pixels, acquiring a value representative of a light level at a corresponding pixel by gradually varying a value of sensitivity of the corresponding pixel.Type: GrantFiled: November 22, 2019Date of Patent: November 23, 2021Assignees: STMICROELECTRONICS (GRENOBLE 2) SAS, STMICROELECTRONICS SAInventors: Arnaud Bourge, Tarek Lule, Gregory Roffet
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Patent number: 11138749Abstract: The method of determination of a depth map of a scene comprises generation of a distance map of the scene obtained by time of flight measurements, acquisition of two images of the scene from two different viewpoints, and stereoscopic processing of the two images taking into account the distance map. The generation of the distance map includes generation of distance histograms acquisition zone by acquisition zone of the scene, and the stereoscopic processing includes, for each region of the depth map corresponding to an acquisition zone, elementary processing taking into account the corresponding histogram.Type: GrantFiled: August 22, 2019Date of Patent: October 5, 2021Assignee: STMICROELECTRONICS SAInventors: Manu Alibay, Olivier Pothier, Victor Macela, Alain Bellon, Arnaud Bourge
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Patent number: 11128824Abstract: A system has an array of pixels including a plurality of active pixels and a plurality of dark reference pixels and processing circuitry coupled to the array of pixels. The processing circuitry sequentially computes, for each of a plurality of pairs of sets of dark reference pixels of the plurality of dark reference pixels, absolute differences in dark signal levels of the pair of sets of dark reference pixels. The absolute differences in dark signal levels are accumulated and a noise level of the dark reference pixels of the array of pixels is estimated based on the accumulated absolute differences. The system may be employed in, for example, a back-up camera of an automobile or a mobile phone.Type: GrantFiled: December 11, 2019Date of Patent: September 21, 2021Assignee: STMICROELECTRONICS SAInventors: Arnaud Bourge, Antoine Drouot, Gwladys Hermant
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Publication number: 20200195866Abstract: A system has an array of pixels including a plurality of active pixels and a plurality of dark reference pixels and processing circuitry coupled to the array of pixels. The processing circuitry sequentially computes, for each of a plurality of pairs of sets of dark reference pixels of the plurality of dark reference pixels, absolute differences in dark signal levels of the pair of sets of dark reference pixels. The absolute differences in dark signal levels are accumulated and a noise level of the dark reference pixels of the array of pixels is estimated based on the accumulated absolute differences. The system may be employed in, for example, a back-up camera of an automobile or a mobile phone.Type: ApplicationFiled: December 11, 2019Publication date: June 18, 2020Inventors: Arnaud BOURGE, Antoine DROUOT, Gwladys HERMANT
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Publication number: 20200195832Abstract: An image sensor includes a plurality of pixels, where each of the plurality of pixels includes a photodiode. The image sensor is configured to capture images of a scene exposed with a flickering light source by for each of the plurality of pixels, acquiring a value representative of a light level at a corresponding pixel by gradually varying a value of sensitivity of the corresponding pixel.Type: ApplicationFiled: November 22, 2019Publication date: June 18, 2020Inventors: Arnaud Bourge, Tarek Lule, Gregory Roffet
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Patent number: 10540750Abstract: An electronic device includes a SPAD array and readout circuitry coupled thereto. The readout circuitry generates a depth map having a first resolution, and a signal count map having a second resolution greater than the first resolution. The depth map corresponds to distance observations to an object. The signal count map corresponds to intensity observation sets of the object, with each intensity observation set including intensity observations corresponding to a respective distance observation in the depth map. An upscaling processor is coupled to the readout circuitry to calculate upscaling factors for each intensity observation set so that each distance observation has respective upscaling factors associated therewith. The depth map is then upscaled from the first resolution to the second resolution based on the respective upscaling factors.Type: GrantFiled: May 10, 2018Date of Patent: January 21, 2020Assignees: STMICROELECTRONICS SA, STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITEDInventors: Ed Hawkins, Arnaud Bourge, Chandan Siyag
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Publication number: 20190385320Abstract: The method of determination of a depth map of a scene comprises generation of a distance map of the scene obtained by time of flight measurements, acquisition of two images of the scene from two different viewpoints, and stereoscopic processing of the two images taking into account the distance map. The generation of the distance map includes generation of distance histograms acquisition zone by acquisition zone of the scene, and the stereoscopic processing includes, for each region of the depth map corresponding to an acquisition zone, elementary processing taking into account the corresponding histogram.Type: ApplicationFiled: August 22, 2019Publication date: December 19, 2019Inventors: Manu Alibay, Olivier Pothier, Victor Macela, Alain Bellon, Arnaud Bourge
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Patent number: 10445892Abstract: The method of determination of a depth map of a scene comprises generation of a distance map of the scene obtained by time of flight measurements, acquisition of two images of the scene from two different viewpoints, and stereoscopic processing of the two images taking into account the distance map. The generation of the distance map includes generation of distance histograms acquisition zone by acquisition zone of the scene, and the stereoscopic processing includes, for each region of the depth map corresponding to an acquisition zone, elementary processing taking into account the corresponding histogram.Type: GrantFiled: August 31, 2017Date of Patent: October 15, 2019Assignee: STMICROELECTRONICS SAInventors: Manu Alibay, Olivier Pothier, Victor Macela, Alain Bellon, Arnaud Bourge
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Publication number: 20180268522Abstract: An electronic device includes a SPAD array and readout circuitry coupled thereto. The readout circuitry generates a depth map having a first resolution, and a signal count map having a second resolution greater than the first resolution. The depth map corresponds to distance observations to an object. The signal count map corresponds to intensity observation sets of the object, with each intensity observation set including intensity observations corresponding to a respective distance observation in the depth map. An upscaling processor is coupled to the readout circuitry to calculate upscaling factors for each intensity observation set so that each distance observation has respective upscaling factors associated therewith. The depth map is then upscaled from the first resolution to the second resolution based on the respective upscaling factors.Type: ApplicationFiled: May 10, 2018Publication date: September 20, 2018Inventors: Ed Hawkins, Arnaud Bourge, Chandan Siyag
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Patent number: 10075702Abstract: An electronic device includes a single-photon avalanche diode (SPAD) array and readout circuitry coupled thereto. The readout circuitry generates a depth map having a first resolution, and a signal count map having a second resolution greater than the first resolution. The depth map corresponds to distance observations to an object. The signal count map corresponds to intensity observation sets of the object, with each intensity observation set including intensity observations corresponding to a respective distance observation in the depth map. An upscaling processor is coupled to the readout circuitry to calculate upscaling factors for each intensity observation set so that each distance observation has respective upscaling factors associated therewith. The depth map is then upscaled from the first resolution to the second resolution based on the respective upscaling factors.Type: GrantFiled: July 7, 2016Date of Patent: September 11, 2018Assignee: STMICROELECTRONICS SAInventors: Olivier Pothier, Arnaud Bourge
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Publication number: 20180247422Abstract: The method of determination of a depth map of a scene comprises generation of a distance map of the scene obtained by time of flight measurements, acquisition of two images of the scene from two different viewpoints, and stereoscopic processing of the two images taking into account the distance map. The generation of the distance map includes generation of distance histograms acquisition zone by acquisition zone of the scene, and the stereoscopic processing includes, for each region of the depth map corresponding to an acquisition zone, elementary processing taking into account the corresponding histogram.Type: ApplicationFiled: August 31, 2017Publication date: August 30, 2018Inventors: Manu ALIBAY, Olivier POTHIER, Victor MACELA, Alain BELLON, Arnaud BOURGE
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Publication number: 20180014006Abstract: An electronic device includes a SPAD array and readout circuitry coupled thereto. The readout circuitry generates a depth map having a first resolution, and a signal count map having a second resolution greater than the first resolution. The depth map corresponds to distance observations to an object. The signal count map corresponds to intensity observation sets of the object, with each intensity observation set including intensity observations corresponding to a respective distance observation in the depth map. An upscaling processor is coupled to the readout circuitry to calculate upscaling factors for each intensity observation set so that each distance observation has respective upscaling factors associated therewith. The depth map is then upscaled from the first resolution to the second resolution based on the respective upscaling factors.Type: ApplicationFiled: July 7, 2016Publication date: January 11, 2018Inventors: Olivier POTHIER, Arnaud Bourge
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Patent number: 9239947Abstract: A method for detecting faces in an image having a plurality of picture elements, each having a plurality of color components in a predetermined color space, includes determining an extended range for color component values, in the color space, in which a skin tone area is likely to be detected, defining intervals for the color component values, in the color space, covering at least part of the extended range, and scanning each of the intervals to detect a skin tone area. If a skin tone area is detected, the method includes selecting the intervals in which a skin tone area is detected, defining candidate limited ranges for color component values, in the color space, from the selected intervals, performing face detection on a skin tone area in at least some of the candidate limited ranges, and selecting a chosen candidate limited range based on the number of faces detected.Type: GrantFiled: December 22, 2011Date of Patent: January 19, 2016Assignee: ST-Ericsson SAInventors: Stéphane Auberger, Arnaud Bourge, Adrien Graton
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Patent number: 8665955Abstract: The present invention relates to a method of storing pictures in a memory, a picture being divided into data blocks, said method comprising the step of: computing a transform of an input data block for producing a transformed data block comprising a set of n transformed elements, where n is an integer, entropy coding m first transformed elements of the transformed data block for producing an encoded data block, where m is an integer lower than n, computing a cost function on the basis of a weighted sum of a distortion value between the input data block and the encoded data block and a power consumption required for reading or writing the encoded data block in the memory, iterating the entropy coding and cost function computing steps for different values of m, and storing in the memory the encoded data block corresponding to the value of m that minimizes the cost function.Type: GrantFiled: June 7, 2005Date of Patent: March 4, 2014Assignee: NXP, B.V.Inventors: Arnaud Bourge, Joël Jung