发明授权
- 专利标题: Method and apparatus for entropy encoding based on encoding cost
- 专利标题(中): 基于编码成本的熵编码方法和装置
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申请号: US13191998申请日: 2011-07-27
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公开(公告)号: US08891616B1公开(公告)日: 2014-11-18
- 发明人: Paul Wilkins
- 申请人: Paul Wilkins
- 申请人地址: US CA Mountain View
- 专利权人: Google Inc.
- 当前专利权人: Google Inc.
- 当前专利权人地址: US CA Mountain View
- 代理机构: Young Basile Hanlon & MacFarlane P.C.
- 主分类号: H04N7/26
- IPC分类号: H04N7/26
摘要:
Systems, methods, and apparatuses for compressing a video signal are disclosed. In one embodiment the method includes transforming at least a portion of the video signal to produce matrices of transform coefficients, dividing the transform coefficients by at least one quantizer value to generate matrices of quantized transform coefficients, and identifying an encoding context including the transformed portion of the video signal. The method may further include determining a cost to entropy encode a non-zero value occurring within the encoding context, determining a first range including zero and having a width that is a function of the determined cost to entropy encode a non-zero value, and setting to zero at least one transform coefficient that falls within the first range.
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