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公开(公告)号：US11917307B2
公开(公告)日：2024-02-27
申请号：US18151252
申请日：2023-01-06
Applicant: NVIDIA Corporation
Inventor： Animesh Khemka , Sean Midthun Pieper
IPC: H04N23/84 , H04N19/149
CPC classification number: H04N23/843 , H04N19/149
Abstract: A method of decompression includes decompressing a compressed image according to a power curve to generate a partially decompressed image, wherein the compressed image is decompressed from a second bit depth that is lower than a first bit-depth at which the image was generated.
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公开(公告)号：US20240155253A1
公开(公告)日：2024-05-09
申请号：US18414266
申请日：2024-01-16
Applicant: NVIDIA Corporation
Inventor： Animesh Khemka , Sean Midthun Pieper
IPC: H04N23/84 , H04N19/149
CPC classification number: H04N23/843 , H04N19/149
Abstract: A method of compression includes compressing a captured image from a first bit-depth at which it was captured to a second bit-depth that is less than the first bit-depth. The compression comprises applying, according to a power curve, a first compression amount to a first region of the captured image having a first pixel value; and applying, according to the power curve, a second compression amount to a second part of the captured image having a higher second pixel value, wherein the first compression amount is lower than the second compression amount.
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公开(公告)号：US11582431B1
公开(公告)日：2023-02-14
申请号：US17461750
申请日：2021-08-30
Applicant: NVIDIA Corporation
Inventor： Animesh Khemka , Sean Midthun Pieper
IPC: H04N9/04 , H04N19/149
Abstract: Apparatuses, systems, and techniques to receive, at one or more processor associated with an image signal processing (ISP) pipeline, a compressed image generated by an image sensor, wherein the compressed image is captured at a first bit-depth associated with the image sensor and is compressed to a second bit-depth that is lower than the first bit-depth, and wherein the ISP is associated with a third bit-depth that is lower than the first bit-depth and higher than the second bit-depth; and decompress the compressed image according to a power curve to generate a partially decompressed image having the third bit-depth, wherein a plurality of regions of the partially decompressed image are decompressed at separate decompression amounts based on a corresponding pixel value of each region of the plurality of regions.
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公开(公告)号：US20230065993A1
公开(公告)日：2023-03-02
申请号：US17461750
申请日：2021-08-30
Applicant: NVIDIA Corporation
Inventor： Animesh Khemka , Sean Midthun Pieper
IPC: H04N9/04 , H04N19/149
Abstract: Apparatuses, systems, and techniques to receive, at one or more processor associated with an image signal processing (ISP) pipeline, a compressed image generated by an image sensor, wherein the compressed image is captured at a first bit-depth associated with the image sensor and is compressed to a second bit-depth that is lower than the first bit-depth, and wherein the ISP is associated with a third bit-depth that is lower than the first bit-depth and higher than the second bit-depth; and decompress the compressed image according to a power curve to generate a partially decompressed image having the third bit-depth, wherein a plurality of regions of the partially decompressed image are decompressed at separate decompression amounts based on a corresponding pixel value of each region of the plurality of regions.
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公开(公告)号：US11436704B2
公开(公告)日：2022-09-06
申请号：US16742322
申请日：2020-01-14
Applicant: NVIDIA Corporation
Inventor： Hamidreza Mirzaei Domabi , Eric Dujardin , Animesh Khemka , Yining Deng
Abstract: In order to more accurately white balance an image, weightings can be determined for pixels of an image when computing an illuminant color value of the image and/or a scene. The weightings can be based at least in part on the Signal-to-Noise Ratio (SNR) of the pixels. The SNR may be actual SNR or SNR estimated from brightness levels of the pixels. SNR weighting (e.g., SNR adjustment) may reduce the effect of pixels with high noise on the computed illuminant color value. For example, one or more channel values of the illuminant color value can be determined based on the weightings and color values of the pixels. One or more color gain values can be determined based on the one or more channel values of the illuminant color value and used to white balance the image.
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Patent Agency Ranking
公开(公告)号：US20200226720A1
公开(公告)日：2020-07-16
申请号：US16742322
申请日：2020-01-14
Applicant: NVIDIA Corporation
Inventor： Hamidreza Mirzaei Domabi , Eric Dujardin , Animesh Khemka , Yining Deng
Abstract: In order to more accurately white balance an image, weightings can be determined for pixels of an image when computing an illuminant color value of the image and/or a scene. The weightings can be based at least in part on the Signal-to-Noise Ratio (SNR) of the pixels. The SNR may be actual SNR or SNR estimated from brightness levels of the pixels. SNR weighting (e.g., SNR adjustment) may reduce the effect of pixels with high noise on the computed illuminant color value. For example, one or more channel values of the illuminant color value can be determined based on the weightings and color values of the pixels. One or more color gain values can be determined based on the one or more channel values of the illuminant color value and used to white balance the image.
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公开(公告)号：US12273632B2
公开(公告)日：2025-04-08
申请号：US18414266
申请日：2024-01-16
Applicant: NVIDIA Corporation
Inventor： Animesh Khemka , Sean Midthun Pieper
IPC: H04N23/84 , H04N19/149
Abstract: A method of compression includes compressing a captured image from a first bit-depth at which it was captured to a second bit-depth that is less than the first bit-depth. The compression comprises applying, according to a power curve, a first compression amount to a first region of the captured image having a first pixel value; and applying, according to the power curve, a second compression amount to a second part of the captured image having a higher second pixel value, wherein the first compression amount is lower than the second compression amount.
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公开(公告)号：US12244938B2
公开(公告)日：2025-03-04
申请号：US18078667
申请日：2022-12-09
Applicant: NVIDIA Corporation
Inventor： Douglas Taylor , Animesh Khemka
Abstract: Apparatuses, systems, and techniques for white balancing an image are presented. In at least one embodiment, a chromaticity-based weighting function is determined based at least on an estimated scene brightness of the image and applied to exclude or minimize the impact of large colored portions or objects within an image when estimating an illuminant color.
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公开(公告)号：US20230141489A1
公开(公告)日：2023-05-11
申请号：US18151252
申请日：2023-01-06
Applicant: NVIDIA Corporation
Inventor： Animesh Khemka , Sean Midthun Pieper
IPC: H04N23/84 , H04N19/149
CPC classification number: H04N23/843 , H04N19/149
Abstract: A method of decompression includes decompressing a compressed image according to a power curve to generate a partially decompressed image, wherein the compressed image is decompressed from a second bit depth that is lower than a first bit-depth at which the image was generated.
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公开(公告)号：US20220414831A1
公开(公告)日：2022-12-29
申请号：US17903290
申请日：2022-09-06
Applicant: NVIDIA Corporation
Inventor： Hamidreza Mirzaei Domabi , Eric Dujardin , Animesh Khemka , Yining Deng
Abstract: In order to more accurately white balance an image, weightings can be determined for pixels of an image when computing an illuminant color value of the image and/or a scene. The weightings can be based at least in part on the Signal-to-Noise Ratio (SNR) of the pixels. The SNR may be actual SNR or SNR estimated from brightness levels of the pixels. SNR weighting (e.g., SNR adjustment) may reduce the effect of pixels with high noise on the computed illuminant color value. For example, one or more channel values of the illuminant color value can be determined based on the weightings and color values of the pixels. One or more color gain values can be determined based on the one or more channel values of the illuminant color value and used to white balance the image.
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