发明名称 |
Video encoding method and video decoding method |
摘要 |
Provided is a video encoding/decoding technique for improving the compression efficiency by reducing the motion vector code amount. In a video decoding process, the prediction vector calculation method is switched from one to another in accordance with a difference between predetermined motion vectors among a plurality of motion vectors of a peripheral block of a block to be decoded and already decoded. The calculated prediction vector is added to a difference vector decoded from an encoded stream so as to calculate a motion vector. By using the calculated motion vector, the inter-image prediction process is executed. |
申请公布号 |
US8693546(B2) |
申请公布日期 |
2014.04.08 |
申请号 |
US200913058560 |
申请日期 |
2009.06.02 |
申请人 |
TAKAHASHI MASASHI;YAMAGUCHI MUNEAKI;HITACHI, LTD. |
发明人 |
TAKAHASHI MASASHI;YAMAGUCHI MUNEAKI |
分类号 |
H04N7/12;H04B1/66;H04N5/14;H04N9/64;H04N11/02;H04N11/04 |
主分类号 |
H04N7/12 |
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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