发明名称 |
Video coding quantization |
摘要 |
Modify H.263-type quantization with an adaptive quantization parameter floor; this limits clipping of quantized DCT coefficients and consequent artifacts. The maximum absolute level of AC coefficients of a DCT transformed macroblock provides a minimum quantization parameter from integer division by 256 when the quantized levels are clipped to a range such as−127 to +127.
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申请公布号 |
US7778813(B2) |
申请公布日期 |
2010.08.17 |
申请号 |
US20040917981 |
申请日期 |
2004.08.13 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
ZHOU MINHUA |
分类号 |
G06F17/50;H04N7/12;H04N7/26 |
主分类号 |
G06F17/50 |
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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