发明名称 |
Moving picture coding method, and moving picture decoding method |
摘要 |
A moving picture coding apparatus (10) for performing inter-picture predictive coding on pictures constituting a moving picture is provided with a coding unit (103) for performing predictive error coding on image data; a decoding unit (105) for performing predictive error decoding on an output from the coding unit (103); a reference picture memory (117) for holding output data from the decoding unit (105); and a motion vector detection unit (108) for detecting forward and backward motion vectors on the basis of decoded image data stored in the memory (117). When coding a B picture, a picture that is timewise closest to the target picture is used as a candidate picture for forward reference, and an I or P picture that is timewise closest to the target picture is used as a candidate picture for backward reference. The moving picture coding apparatus (10) so constructed can improve coding efficiency of a B picture to be subjected to bidirectional predictive coding.
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申请公布号 |
US7756204(B2) |
申请公布日期 |
2010.07.13 |
申请号 |
US20070980484 |
申请日期 |
2007.10.31 |
申请人 |
PANASONIC CORPORATION |
发明人 |
KONDO SATOSHI;KADONO SHINYA;HAGAI MAKOTO |
分类号 |
H04N7/32;G06K9/36;G06T9/00;H04N7/26;H04N7/36;H04N7/46;H04N7/50 |
主分类号 |
H04N7/32 |
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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