发明名称 |
Methods for motion estimation with adaptive motion accuracy |
摘要 |
Methods for motion estimation with adaptive motion accuracy of the present invention include several techniques for computing motion vectors of high pixel accuracy with a minor increase in computation. One technique uses fast-search strategies in sub-pixel space that smartly searches for the best motion vectors. An alternate technique estimates high-accurate motion vectors using different interpolation filters at different stages in order to reduce computational complexity. Yet another technique uses rate-distortion criteria that adapts according to the different motion accuracies to determine both the best motion vectors and the best motion accuracies. Still another technique uses a VLC table that is interpreted differently at different coding units, according to the associated motion vector accuracy.
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申请公布号 |
US6968008(B1) |
申请公布日期 |
2005.11.22 |
申请号 |
US20000615791 |
申请日期 |
2000.07.13 |
申请人 |
SHARP LABORATORIES OF AMERICA, INC. |
发明人 |
RIBAS-CORBERA JORDI;SHEN JIANDONG |
分类号 |
H03M7/36;H04N7/26;H04N7/50;(IPC1-7):H04N7/18 |
主分类号 |
H03M7/36 |
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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