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公开(公告)号:EP3829171A1
公开(公告)日:2021-06-02
申请号:EP20201343.9
申请日:2015-02-25
申请人: Apple Inc.
发明人: TOURAPIS, Alexis , SINGER, David
IPC分类号: H04N19/124 , H04N19/154 , H04N19/17 , H04N19/98 , G06F3/14 , G09G5/00 , G09G5/02 , G09G5/10 , H04N1/64 , H04N5/20 , H04N5/235 , H04N9/67 , H04N19/102 , H04N19/137 , H04N19/14 , H04N19/172 , H04N19/177
摘要: A video encoding and decoding system that implements an adaptive transfer function method internally within the codec for signal representation. A focus dynamic range representing an effective dynamic range of the human visual system may be dynamically determined for each scene, sequence, frame, or region of input video. The video data may be cropped and quantized into the bit depth of the codec according to a transfer function for encoding within the codec. The transfer function may be the same as the transfer function of the input video data or may be a transfer function internal to the codec. The encoded video data may be decoded and expanded into the dynamic range of display(s). The adaptive transfer function method enables the codec to use fewer bits for the internal representation of the signal while still representing the entire dynamic range of the signal in output.
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53.
公开(公告)号:EP3338452B1
公开(公告)日:2020-08-26
申请号:EP16779255.5
申请日:2016-09-23
发明人: MINOO, Koohyar , BAYLON, David M. , GU, Zhouye , YU, Yue , LUTHRA, Ajay
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公开(公告)号:EP3619678A1
公开(公告)日:2020-03-11
申请号:EP18719934.4
申请日:2018-05-03
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公开(公告)号:EP3456047B1
公开(公告)日:2020-02-26
申请号:EP17722992.9
申请日:2017-05-09
发明人: LU, Taoran , PU, Fangjun , YIN, Peng , CHEN, Tao
IPC分类号: H04N19/30 , H04N19/124 , H04N19/85 , H04N19/98
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公开(公告)号:EP3610648A1
公开(公告)日:2020-02-19
申请号:EP18721616.3
申请日:2018-04-12
IPC分类号: H04N19/53 , H04N19/182 , H04N19/136 , H04N19/98 , H04N19/82
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57.
公开(公告)号:EP3571662A1
公开(公告)日:2019-11-27
申请号:EP17832827.4
申请日:2017-12-28
申请人: Sony Corporation
发明人: KIKUCHI, Hiroaki , ONUKI, Jun , HIROSE, Masaki
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公开(公告)号:EP3266208B1
公开(公告)日:2019-05-08
申请号:EP16720208.4
申请日:2016-03-01
发明人: FROEHLICH, Jan , SU, Guan-Ming , ATKINS, Robin , DALY, Scott , MILLER, Jon Scott
IPC分类号: H04N19/136 , H04N19/98 , H04N19/182 , H04N19/156 , H04N19/132 , H04N19/124 , H04N19/117
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公开(公告)号:EP3456047A1
公开(公告)日:2019-03-20
申请号:EP17722992.9
申请日:2017-05-09
发明人: LU, Taoran , PU, Fangjun , YIN, Peng , CHEN, Tao
IPC分类号: H04N19/30 , H04N19/124 , H04N19/85 , H04N19/98
摘要: Methods for the chroma reshaping of high-dynamic range (HDR) signals are presented. For each input pixel, a first scaler is generated based on the pixel luminance and a luma-based chroma reshaping (LCR) function.A second scaler is generated based on a saturation-based chroma reshaping (SCR) function and the saturation value of the pixel.A cascaded scaler is generated by multiplying the first scaler with the second scaler. Reshaped chroma values are generated by multiplying the input chroma values with the cascaded scaler. The characteristics of preferred LCR and SCR functions are discussed. Inverse decoding methods based on chroma-reshaping metadata that define the LCR and SCR functions are also described.
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公开(公告)号:EP2688042B1
公开(公告)日:2019-01-09
申请号:EP13172504.6
申请日:2004-07-08
IPC分类号: G06T9/00 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/184 , H04N19/98
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