发明申请
- 专利标题: QUANTIZATION FOR HYBRID VIDEO CODING
- 专利标题(中): 混合视频编码的量化
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申请号: US11685566申请日: 2007-03-13
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公开(公告)号: US20080225947A1公开(公告)日: 2008-09-18
- 发明人: Matthias Narroschke , Hans-Georg Musmann
- 申请人: Matthias Narroschke , Hans-Georg Musmann
- 主分类号: H04N11/04
- IPC分类号: H04N11/04 ; H04B1/66 ; H04N7/12
摘要:
Method for coding a video signal using hybrid coding, comprising: reducing temporal redundancy by block based motion compensated prediction in order to establish a prediction error signal; performing quantization samples of the prediction error signal or on coefficients resulting from a transformation of the prediction error signal into the frequency domain to obtain quantized values, representing quantized samples or quantized coefficients respectively; calculating a quantization efficiency for the quantized values; calculating a zero efficiency for a quantization, when the quantized values are set to zero; selecting the higher efficiency; and maintaining the quantized values or setting quantized values to zero, for further proceeding, depending on the selected efficiency.
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