发明名称 |
RATE CONTROL ADAPTATION FOR HIGH-DYNAMIC RANGE IMAGES |
摘要 |
A high dynamic range input video signal characterized by either a gamma-based or a perceptually-quantized (PQ) source electro-optical transfer function (EOTF) is to be compressed. Given a luminance range for an image-region in the input, for a gamma-coded input signal, a rate-control adaptation method in the encoder adjusts a region-based quantization parameter (QP) so that it increases in highlight regions and decreases in dark regions, otherwise, for a PQ-coded input, the region-based QP increases in the dark areas and decreases in the highlight areas. |
申请公布号 |
EP3021581(A1) |
申请公布日期 |
2016.05.18 |
申请号 |
EP20150194042 |
申请日期 |
2015.11.11 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
LU, TAORAN;YIN, PENG;CHEN, TAO;SU, GUAN-MING |
分类号 |
H04N19/147;H04N19/124;H04N19/126;H04N19/136 |
主分类号 |
H04N19/147 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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