发明名称 |
Method and apparatus for blocking effect reduction |
摘要 |
By utilizing parameters derivable from a compressed bit-stream, measures are obtained of the subjective quality of a decoded picture, without the necessity for reference to source material. A blockiness measure is derived both locally and globally and used to control a de-blocking filter. An estimate of signal-to-noise ratio is derived from quantization values.
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申请公布号 |
US6898321(B1) |
申请公布日期 |
2005.05.24 |
申请号 |
US20010806968 |
申请日期 |
2001.04.06 |
申请人 |
SNELL & WILCOX LIMITED |
发明人 |
KNEE MICHAEL JAMES;DIGGINS JONATHAN |
分类号 |
G06T5/20;H04N7/26;H04N7/30;H04N17/00;(IPC1-7):G06K9/36;G06K9/46;G06K9/38;H04N7/12;H04N11/02 |
主分类号 |
G06T5/20 |
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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