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公开(公告)号：US10186022B2
公开(公告)日：2019-01-22
申请号：US15636294
申请日：2017-06-28
Inventor： Mahesh Chandra , Antoine Drouot
Abstract: Various embodiments provide an optimized image filter. The optimized image and video obtains an input image and selects a target pixel for modification. Difference values are then determined between the selected target pixel and each reference pixel of a search area. Subsequently, a weighting function is used to determine weight values for each of the reference pixels of the search area based on their respective difference value. The selected target pixel is then modified by the optimized image filter using the determined weight values. A new target pixel in an apply patch is then selected for modification. The new target pixel is modified using the previously determined weight values reassigned to a new set of reference pixels. The previously determined weight values are reassigned to the new set of reference pixels based on each of the new set of reference pixels' position relative to the new target pixel.
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公开(公告)号：US09710722B1
公开(公告)日：2017-07-18
申请号：US14983150
申请日：2015-12-29
Inventor： Mahesh Chandra , Antoine Drouot
CPC classification number: G06T5/20 , G06K9/4604 , G06K9/4671 , G06K9/56 , G06T5/002 , G06T11/60 , G06T2207/10016
Abstract: Various embodiments provide an optimized image filter. The optimized image and video obtains an input image and selects a target pixel for modification. Difference values are then determined between the selected target pixel and each reference pixel of a search area. Subsequently, a weighting function is used to determine weight values for each of the reference pixels of the search area based on their respective difference value. The selected target pixel is then modified by the optimized image filter using the determined weight values. A new target pixel in an apply patch is then selected for modification. The new target pixel is modified using the previously determined weight values reassigned to a new set of reference pixels. The previously determined weight values are reassigned to the new set of reference pixels based on each of the new set of reference pixels' position relative to the new target pixel.
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Patent Agency Ranking
公开(公告)号：US11818476B2
公开(公告)日：2023-11-14
申请号：US17199444
申请日：2021-03-12
Applicant: STMicroelectronics SA
Inventor： Valentin Rebiere , Antoine Drouot
IPC: H04N25/60 , H04N23/84 , H04N25/13 , H04N25/705
CPC classification number: H04N25/60 , H04N23/843 , H04N25/13 , H04N25/705
Abstract: An embodiment method for estimating a missing or incorrect value in a table of values generated by a photosite matrix comprises a definition of a zone of the table comprising the value to be estimated and other values, referred to as neighboring values, and an estimation of the value to be estimated based on the primary neighboring values and the weight associated with these primary neighboring values, wherein a weight of each neighboring value, referred to as primary neighboring value, of the same colorimetric component as that of the missing or incorrect value to be estimated, is determined according to differences between neighboring values disposed on an axis and neighboring values disposed parallel with this axis and positioned in relation to this axis on the same side as the primary neighboring value for which the weight is determined.
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公开(公告)号：US20210297610A1
公开(公告)日：2021-09-23
申请号：US17199444
申请日：2021-03-12
Applicant: STMicroelectronics SA
Inventor： Valentin Rebiere , Antoine Drouot
Abstract: An embodiment method for estimating a missing or incorrect value in a table of values generated by a photosite matrix comprises a definition of a zone of the table comprising the value to be estimated and other values, referred to as neighboring values, and an estimation of the value to be estimated based on the primary neighboring values and the weight associated with these primary neighboring values, wherein a weight of each neighboring value, referred to as primary neighboring value, of the same colorimetric component as that of the missing or incorrect value to be estimated, is determined according to differences between neighboring values disposed on an axis and neighboring values disposed parallel with this axis and positioned in relation to this axis on the same side as the primary neighboring value for which the weight is determined.
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公开(公告)号：US20230010182A1
公开(公告)日：2023-01-12
申请号：US17808667
申请日：2022-06-24
Inventor： Arnaud Bourge , Tanguy Le Dauphin , Antoine Drouot , Brian Douglas Stewart
Abstract: 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 integration time is a multiple of the determined period of the light pulses of the source.
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公开(公告)号：US11128824B2
公开(公告)日：2021-09-21
申请号：US16711198
申请日：2019-12-11
Applicant: STMICROELECTRONICS SA
Inventor： Arnaud Bourge , Antoine Drouot , Gwladys Hermant
Abstract: 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.
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7.发明公开公开(公告)号：US20240048863A1
公开(公告)日：2024-02-08
申请号：US18482117
申请日：2023-10-06
Applicant: STMicroelectronics SA
Inventor： Valentin Rebiere , Antoine Drouot
IPC: H04N25/60 , H04N23/84 , H04N25/13 , H04N25/705
CPC classification number: H04N25/60 , H04N23/843 , H04N25/13 , H04N25/705
Abstract: An embodiment method for estimating a missing or incorrect value in a table of values generated by a photosite matrix comprises a definition of a zone of the table comprising the value to be estimated and other values, referred to as neighboring values, and an estimation of the value to be estimated based on the primary neighboring values and the weight associated with these primary neighboring values, wherein a weight of each neighboring value, referred to as primary neighboring value, of the same colorimetric component as that of the missing or incorrect value to be estimated, is determined according to differences between neighboring values disposed on an axis and neighboring values disposed parallel with this axis and positioned in relation to this axis on the same side as the primary neighboring value for which the weight is determined.
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