发明名称 |
Piecewise Cross Color Channel Predictor |
摘要 |
A sequence of visual dynamic range (VDR) images may be encoded using a standard dynamic range (SDR) base layer and one or more enhancement layers. A prediction image is generated by using piecewise cross-color channel prediction (PCCC), wherein a color channel in the SDR input may be segmented into two or more color channel segments and each segment is assigned its own cross-color channel predictor to derive a predicted output VDR image. PCCC prediction models may include first order, second order, or higher order parameters. Using a minimum mean-square error criterion, a closed form solution is presented for the prediction parameters for a second-order PCCC model. Algorithms for segmenting the color channels into multiple color channel segments are also presented. |
申请公布号 |
US2014369409(A1) |
申请公布日期 |
2014.12.18 |
申请号 |
US201314370674 |
申请日期 |
2013.01.23 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
Su Guan-Ming;Qu Sheng;Yin Peng |
分类号 |
H04N19/593;H04N19/186;H04N19/182 |
主分类号 |
H04N19/593 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
San Francisco CA US |