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公开(公告)号：US20220141449A1
公开(公告)日：2022-05-05
申请号：US17315125
申请日：2021-05-07
Applicant: NVIDIA Corporation
Inventor： Sean Midthun Pieper , Robin Brian Jenkin
Abstract: In one embodiment, a system determines pixel data from a pair of regions of an image generated by an imaging device, the pair of regions includes a first region and a second region, where the first region includes a first plurality of pixels and the second region includes a second plurality of pixels. The system determines a plurality of pixel pairs of the image, where a pixel pair includes a first pixel from the first plurality of pixels and a second pixel from the second plurality of pixels. The system calculates a plurality of contrasts based on the plurality of pixel pairs, where a contrast is calculated between the first pixel and the second pixel. The system determines a contrast distribution based on the plurality of contrasts. The system calculates a value representative of a capability of the imaging device to detect contrast based on the contrast distribution.
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公开(公告)号：US09307213B2
公开(公告)日：2016-04-05
申请号：US13668708
申请日：2012-11-05
Applicant: Nvidia Corporation
Inventor： Sean Midthun Pieper
CPC classification number: H04N9/735
Abstract: Embodiments of the present invention are directed to methods and systems for robust weighting of gray patches in automatic white balancing in an image-capture device by utilizing kernel density estimation techniques with dynamically variable bandwidth to determine the probability density of samples to create an initial estimate, then verifying the initial gray point estimate to account for outliers. In one embodiment, given a set of image data, an initial gray point estimate in a color space is determined for the set of image data. The initial estimate is then refined by weighting the sub-population with the greatest probability of being gray. A final evaluation that includes a further comparison to pre-programmed constraints determines a final estimate, which can still be further tuned according to user preferences by adjusting color biases. The resulting final gray point estimate provides greater stability, and greatly improved accuracy over traditional techniques and solutions.
Abstract translation: 本发明的实施例涉及通过利用具有动态可变带宽的核密度估计技术来确定采样的概率密度以创建初始估计的方法和系统，用于在图像捕获装置中自动白平衡中灰度补丁的鲁棒加权的方法和系统， 然后验证初始灰点估计值来解释异常值。 在一个实施例中，给定一组图像数据，确定一组图像数据在颜色空间中的初始灰点估计。 然后通过以最大的灰色概率加权子群体来改进初始估计。 包括与预编程约束的进一步比较的最终评估确定了最终估计，其仍然可以通过调整颜色偏差根据用户偏好进一步调整。 所得到的最终灰点估计提供了更大的稳定性，并且比传统技术和解决方案大大提高了准确性。
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公开(公告)号：US20230291890A1
公开(公告)日：2023-09-14
申请号：US18195831
申请日：2023-05-10
Applicant: NVIDIA Corporation
Inventor： Sean Midthun Pieper , Robin Brian Jenkin
CPC classification number: H04N17/002 , G05D1/0061 , G05D1/0223 , G06T7/0002 , G05D2201/0213 , G06T2207/10024
Abstract: In one embodiment, a system receives pixel data from a pair of regions of an image generated by an imaging device, the pair of regions includes a first region and a second region, where the first region includes a first plurality of pixels and the second region includes a second plurality of pixels. The system determines a plurality of pixel pairs, where a pixel pair includes a first pixel from the first plurality of pixels and a second pixel from the second plurality of pixels. The system calculates a plurality of contrasts based on the plurality of pixel pairs. The system determines a contrast distribution based on the plurality of contrasts. The system calculates a value representative of a capability of the imaging device to detect contrast based on the contrast distribution. The system determines a reduction in contrast detectability of the imaging device based on the value.
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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：US20220358627A1
公开(公告)日：2022-11-10
申请号：US17308663
申请日：2021-05-05
Applicant: NVIDIA Corporation
Inventor： Yining Deng , Eric Dujardin , Sean Midthun Pieper , Minwoo Park
Abstract: In various examples, apparatuses, systems, and techniques to perform offline image signal processing of source image data to generate target image data. In at least one embodiment, data collection using exposure and calibration setting of an image sensor is performed to generate source image data, which is then processed by using offline image signal processing to generate target data.
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Patent Agency Ranking
公开(公告)号：US20220141450A1
公开(公告)日：2022-05-05
申请号：US17315130
申请日：2021-05-07
Applicant: NVIDIA Corporation
Inventor： Sean Midthun Pieper , Robin Brian Jenkin
Abstract: In one embodiment, a system receives pixel data from a pair of regions of an image generated by an imaging device, the pair of regions includes a first region and a second region, where the first region includes a first plurality of pixels and the second region includes a second plurality of pixels. The system determines a plurality of pixel pairs, where a pixel pair includes a first pixel from the first plurality of pixels and a second pixel from the second plurality of pixels. The system calculates a plurality of contrasts based on the plurality of pixel pairs. The system determines a contrast distribution based on the plurality of contrasts. The system calculates a value representative of a capability of the imaging device to detect contrast based on the contrast distribution. The system determines a reduction in contrast detectability of the imaging device based on the value.
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公开(公告)号：US20140125836A1
公开(公告)日：2014-05-08
申请号：US13668708
申请日：2012-11-05
Applicant: NVIDIA CORPORATION
Inventor： Sean Midthun Pieper
IPC: H04N9/73
CPC classification number: H04N9/735
Abstract: Embodiments of the present invention are directed to methods and systems for robust weighting of gray patches in automatic white balancing in an image-capture device by utilizing kernel density estimation techniques with dynamically variable bandwidth to determine the probability density of samples to create an initial estimate, then verifying the initial gray point estimate to account for outliers. In one embodiment, given a set of image data, an initial gray point estimate in a color space is determined for the set of image data. The initial estimate is then refined by weighting the sub-population with the greatest probability of being gray. A final evaluation that includes a further comparison to pre-programmed constraints determines a final estimate, which can still be further tuned according to user preferences by adjusting color biases. The resulting final gray point estimate provides greater stability, and greatly improved accuracy over traditional techniques and solutions.
Abstract translation: 本发明的实施例涉及通过利用具有动态可变带宽的核密度估计技术来确定采样的概率密度以创建初始估计的方法和系统，用于在图像捕获装置中自动白平衡中灰度补丁的鲁棒加权的方法和系统， 然后验证初始灰点估计值来解释异常值。 在一个实施例中，给定一组图像数据，确定一组图像数据在颜色空间中的初始灰点估计。 然后通过以最大的灰色概率加权子群体来改进初始估计。 包括与预编程约束的进一步比较的最终评估确定了最终估计，其仍然可以通过调整颜色偏差根据用户偏好进一步调整。 所得到的最终灰点估计提供了更大的稳定性，并且比传统技术和解决方案大大提高了准确性。
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公开(公告)号：US20140071102A1
公开(公告)日：2014-03-13
申请号：US13732246
申请日：2012-12-31
Applicant: NVIDIA CORPORATION
Inventor： Sean Midthun Pieper , Kurt Roland Wall , Ricardo J. Motta
IPC: G09G5/02
CPC classification number: G09G5/026 , G09G5/02 , G09G2340/06 , G09G2360/144 , H04N5/58 , H04N9/73 , H04N21/42202 , H04N21/4318
Abstract: Dynamic white point management techniques include determining a white point of ambient light proximate to a display. A color profile adjustment is determined based upon the determined white point and intensity of the ambient light. The image color space is transformed to a display color space for rendering on the display based on the determined adjusted to the color profile.
Abstract translation: 动态白点管理技术包括确定靠近显示器的环境光的白点。 基于所确定的环境光的白点和强度来确定颜色轮廓调整。 图像颜色空间被转换为显示颜色空间，用于基于所确定的调整到颜色轮廓的显示器进行渲染。
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公开(公告)号：US12238271B2
公开(公告)日：2025-02-25
申请号：US18195831
申请日：2023-05-10
Applicant: NVIDIA Corporation
Inventor： Sean Midthun Pieper , Robin Brian Jenkin
Abstract: In one embodiment, a system receives pixel data from a pair of regions of an image generated by an imaging device, the pair of regions includes a first region and a second region, where the first region includes a first plurality of pixels and the second region includes a second plurality of pixels. The system determines a plurality of pixel pairs, where a pixel pair includes a first pixel from the first plurality of pixels and a second pixel from the second plurality of pixels. The system calculates a plurality of contrasts based on the plurality of pixel pairs. The system determines a contrast distribution based on the plurality of contrasts. The system calculates a value representative of a capability of the imaging device to detect contrast based on the contrast distribution. The system determines a reduction in contrast detectability of the imaging device based on the value.
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公开(公告)号：US12236564B2
公开(公告)日：2025-02-25
申请号：US17308663
申请日：2021-05-05
Applicant: NVIDIA Corporation
Inventor： Yining Deng , Eric Dujardin , Sean Midthun Pieper , Minwoo Park
Abstract: In various examples, apparatuses, systems, and techniques to perform offline image signal processing of source image data to generate target image data. In at least one embodiment, data collection using exposure and calibration setting of an image sensor is performed to generate source image data, which is then processed by using offline image signal processing to generate target data.
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