发明授权
- 专利标题： Methods for determining block averages for film grain simulation
- 专利标题（中）： 用于确定胶片颗粒模拟的块平均值的方法
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申请号： US11252320申请日： 2005-10-17
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公开(公告)号： US09117260B2公开(公告)日： 2015-08-25
- 发明人: Jeffrey Allen Cooper , Joan Llach , Cristina Gomila
- 申请人： Jeffrey Allen Cooper , Joan Llach , Cristina Gomila
- 申请人地址： FR Boulogne-Billancourt
- 专利权人： Thomson Licensing
- 当前专利权人： Thomson Licensing
- 当前专利权人地址： FR Boulogne-Billancourt
- 代理商 Robert D. Shedd; Jorge Tony Villabon
- 主分类号： H04N11/02
- IPC分类号： H04N11/02 ; H04N11/04 ; H04N7/12 ; H04B1/66 ; G06T5/00 ; H04N19/46 ; H04N19/44 ; H04N19/467 ; H04N19/423 ; H04N19/85
摘要：
The present invention provides methods for determining block averages in film grain simulation including determining block averages during a display process and determining block averages during a decoding process. The methods of the present invention exhibit different characteristics in terms of memory requirements and computational cost. More specifically, the first method uses no external memory, but requires either extra reads of the blocks, or internal memory in the display pipeline, while the second method requires extra memory bandwidth and extra external memory (e.g., RAM).