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公开(公告)号：US20240314364A1
公开(公告)日：2024-09-19
申请号：US18678794
申请日：2024-05-30
发明人： Robin Atkins , Peng Yin , Taoran Lu , Jaclyn Anne Pytlarz
CPC分类号： H04N19/87 , H04N1/6058 , H04N19/46 , H04N19/85 , H04N19/98 , G09G2320/06 , G09G2340/06
摘要： In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized. HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.
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公开(公告)号：US12081778B2
公开(公告)日：2024-09-03
申请号：US18413691
申请日：2024-01-16
IPC分类号： H04N19/30 , G06T9/00 , G09G5/02 , H04N1/60 , H04N9/69 , H04N21/235 , H04N21/4402 , G06F3/14
CPC分类号： H04N19/30 , G06T9/00 , G09G5/02 , H04N1/603 , H04N9/69 , H04N21/235 , H04N21/440227 , G06F3/1454
摘要： Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.
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公开(公告)号：US11979615B1
公开(公告)日：2024-05-07
申请号：US17992616
申请日：2022-11-22
发明人： Robin Atkins , Peng Yin , Taoran Lu , Jaclyn Anne Pytlarz
CPC分类号： H04N19/87 , H04N1/6058 , H04N9/67 , H04N19/46 , H04N19/85 , H04N19/98 , G09G2320/06 , G09G2340/06
摘要： In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.
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公开(公告)号：US20240089474A1
公开(公告)日：2024-03-14
申请号：US18506758
申请日：2023-11-10
发明人： Robin Atkins , Peng Yin , Taoran Lu , Fangjun Pu , Sean Thomas McCarthy , Walter J. Husak , Tao Chen , Guan-Ming Su
IPC分类号： H04N19/31 , H04N19/172 , H04N19/187 , H04N19/30 , H04N19/46 , H04N19/70
CPC分类号： H04N19/31 , H04N19/172 , H04N19/187 , H04N19/30 , H04N19/46 , H04N19/70
摘要： Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.
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75.发明授权公开(公告)号：US11887560B2
公开(公告)日：2024-01-30
申请号：US18076993
申请日：2022-12-07
发明人： Jon Scott Miller , Scott Daly , Mahdi Nezamabadi , Robin Atkins
CPC分类号： G09G5/10 , G06F3/14 , G09G5/005 , G09G5/06 , H04N19/40 , G09G2320/0276 , G09G2320/0285 , G09G2320/04 , G09G2340/0428 , G09G2340/0435 , G09G2340/06 , G09G2340/14 , G09G2370/04 , G09G2370/08 , G09G2380/08
摘要： A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to produce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device-specific code values.
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公开(公告)号：US11875719B2
公开(公告)日：2024-01-16
申请号：US17611072
申请日：2020-05-12
IPC分类号： G09G3/20 , G09G5/10 , G09G5/06 , H04N1/60 , G09G5/02 , H04N5/57 , H04N9/67 , H04N9/69 , H04N9/73
CPC分类号： G09G3/2003 , G09G5/10 , G09G2320/0666 , G09G2320/0693 , G09G2340/02 , G09G2340/06 , G09G2354/00
摘要： Two corresponding color patches are displayed on two image displays until adjusted by a viewer to match visually to a common color. Two sets of code values rendered on the two corresponding color patches on the two image displays are identified. Two sets of tristimulus values for the viewer are determined based on the two sets of code values rendered on the two corresponding color patches on the two image displays. The viewer's color matching function are generated based on the two sets of tristimulus values. The viewer's CMF is used in image rendering operations on a target image display.
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公开(公告)号：US11837140B2
公开(公告)日：2023-12-05
申请号：US17996210
申请日：2021-04-16
CPC分类号： G09G3/2003 , G09G5/02 , G09G2320/0666 , G09G2340/06 , G09G2360/144 , G09G2360/16
摘要： Methods and systems for chromatic ambient-light support are provided. Given an input surround correlated color temperature (CCT), its normalized value is mapped to a preferred gray CCT value using a sigmoid-like function model generated based on viewer experimental data. The preferred gray CCT value is then mapped to an adjusted CCT value so that viewing conditions on a display with the input surround CCT value match a D65 surround CCT value.
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公开(公告)号：US20230345055A1
公开(公告)日：2023-10-26
申请号：US18215129
申请日：2023-06-27
发明人： Robin Atkins , Peng Yin , Taoran Lu , Jaclyn Anne Pytlarz
CPC分类号： H04N19/87 , H04N1/6058 , H04N19/46 , H04N19/85 , H04N19/98 , G09G2320/06 , G09G2340/06
摘要： In a method to improve backwards compatibility when decoding high-dynamic range images coded in a wide color gamut (WCG) space which may not be compatible with legacy color spaces, hue and/or saturation values of images in an image database are computed for both a legacy color space (say, YCbCr-gamma) and a preferred WCG color space (say, IPT-PQ). Based on a cost function, a reshaped color space is computed so that the distance between the hue values in the legacy color space and rotated hue values in the preferred color space is minimized. HDR images are coded in the reshaped color space. Legacy devices can still decode standard dynamic range images assuming they are coded in the legacy color space, while updated devices can use color reshaping information to decode HDR images in the preferred color space at full dynamic range.
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公开(公告)号：US20230196963A1
公开(公告)日：2023-06-22
申请号：US17996210
申请日：2021-04-16
CPC分类号： G09G3/2003 , G09G5/02 , G09G2320/0666 , G09G2340/06 , G09G2360/144
摘要： Methods and systems for chromatic ambient-light support are provided. Given an input surround correlated color temperature (CCT), its normalized value is mapped to a preferred gray CCT value using a sigmoid-like function model generated based on viewer experimental data. The preferred gray CCT value is then mapped to an adjusted CCT value so that viewing conditions on a display with the input surround CCT value match a D65 surround CCT value.
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公开(公告)号：US20230171417A1
公开(公告)日：2023-06-01
申请号：US18096425
申请日：2023-01-12
发明人： Robin Atkins , Peng YIN , Taoran LU , Fangjun PU , Sean Thomas MCCARTHY , Walter J. HUSAK , Tao CHEN , Guan-Ming SU
IPC分类号： H04N19/31 , H04N19/187 , H04N19/172 , H04N19/30 , H04N19/46 , H04N19/70
CPC分类号： H04N19/31 , H04N19/187 , H04N19/172 , H04N19/30 , H04N19/46 , H04N19/70
摘要： Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.
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