发明名称 |
MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD. |
摘要 |
A moving image coding apparatus (10) for performing inter-picture predictive coding on pictures constituting a moving image 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 image coding apparatus (10) so constructed can improve coding efficiency of a B picture to be subjected to bidirectional predictive coding. |
申请公布号 |
MXPA03010729(A) |
申请公布日期 |
2004.03.02 |
申请号 |
MX2003PA10729 |
申请日期 |
2002.11.06 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL, CO. LTD. |
发明人 |
SHINYA KADONO |
分类号 |
H04N19/577;G06T9/00;H04N19/103 |
主分类号 |
H04N19/577 |
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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