基本信息:
- 专利标题: REAL-TIME RESHAPING OF SINGLE-LAYER BACKWARDS-COMPATIBLE CODEC
- 专利标题(中):单层反向兼容编解码器的实时重构
- 申请号:PCT/US2017/048925 申请日:2017-08-28
- 公开(公告)号:WO2018044803A1 公开(公告)日:2018-03-08
- 发明人: SONG, Qing , KADU, Harshad , CHEN, Qian , SU, Guan-Ming
- 申请人: DOLBY LABORATORIES LICENSING CORPORATION
- 申请人地址: 1275 Market Street San Francisco, California 94103 US
- 专利权人: DOLBY LABORATORIES LICENSING CORPORATION
- 当前专利权人: DOLBY LABORATORIES LICENSING CORPORATION
- 当前专利权人地址: 1275 Market Street San Francisco, California 94103 US
- 代理机构: ANDERSEN, Robert L. et al.
- 优先权: EP16186392.3 20160830; US62/381,233 20160830
- 主分类号: H04N19/136
- IPC分类号: H04N19/136 ; H04N19/98 ; H04N19/142 ; H04N19/179 ; H04N19/87
摘要:
Real-time forward reshaping, comprising selecting a statistical sliding window that indexes with the current frame, having also, a look-back frame and a look-ahead frame, determining whether they are part of the current scene, determining a noise parameter, a luma transfer function and a luma forward reshaping function based on the luma transfer function and the noise parameter within the current scene, selecting a central tendency sliding window of the current frame and the look-back frame within the current scene, and determining a central tendency luma forward reshaping function. The chroma reshaping comprises analyzing statistics for the extended dynamic range (EDR) weights and EDR upper bounds, mapping these to standard dynamic range (SDR) weights and SDR upper bounds based on the central tendency luma forward reshaping function, determining a chroma content-dependent polynomial and a central tendency chroma forward reshaping polynomial and generating chroma MMR coefficients.
摘要(中):
实时向前变形,包括选择与当前帧索引的统计滑动窗口,也具有回看帧和先行帧,确定它们是否是当前帧的一部分 场景,基于当前场景内的亮度传递函数和噪声参数来确定噪声参数,亮度传递函数和亮度向前变形函数,选择当前帧的中心倾向滑动窗口和 当前场景,并确定中心倾向亮度向前重塑功能。 色度重新整形包括分析扩展动态范围(EDR)权重和EDR上限的统计量,基于中心趋势亮度向前整形函数将它们映射到标准动态范围(SDR)权重和SDR上限,确定色度内容相关性 多项式和中心趋势色度正向重塑多项式并产生色度MMR系数。 p>
IPC结构图谱:
H | 电学 |
--H04 | 电通信技术 |
----H04N | 图像通信,例如电视 |
------H04N19/00 | 用于数字视频信号编码,解码,压缩或解压缩的方法或装置 |
--------H04N19/10 | .使用自适应编码 |
----------H04N19/102 | ..其特征在于由一个元素,参数或选择影响或通过自适应编码控制 |
------------H04N19/136 | ...输入视频信号特征或特性 |