发明名称 |
Motion estimation method and apparatus for calculating a motion vector |
摘要 |
A motion estimation method and a motion estimation apparatus for calculating a motion vector to estimate a current picture partially forming a video sequence on the basis of first and second reference pictures partially forming the video sequence. In the method and apparatus, a reference block included in the first reference picture similar to a current block included in the current picture is specified and multiplied by a first coefficient. By performing a subtraction between the multiplied reference block and the current block, a template block indicative of a difference between the multiplied reference block and the current block is obtained. On the other hand, candidate blocks are calculated by multiplying, by a second coefficient, each reference blocks included in a search window partly forming the second reference picture. Based on the candidate blocks and template block are calculated distortion values each indicative of a difference between the following interpolated blocks and current block. Each of the interpolated blocks is indicative of a mean between the specified reference block of the first reference picture and each reference blocks of the search window.
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申请公布号 |
US5619268(A) |
申请公布日期 |
1997.04.08 |
申请号 |
US19950579760 |
申请日期 |
1995.12.28 |
申请人 |
GRAPHICS COMMUNICATION LABORATORIES |
发明人 |
KOBAYASHI, TAKAYUKI;WUERTELE, DAVID;OKADA, YUTAKA |
分类号 |
G06T7/20;H04N5/14;H04N7/26;(IPC1-7):H04N7/36 |
主分类号 |
G06T7/20 |
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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