发明名称 |
Bewegungseinschätzer |
摘要 |
A motion vector for motion-compensated prediction in an inter-frame differential video coder is derived by comparing each block in a row of a current frame with the corresponding region, and positionally shifted regions, of a previous frame. The blocks are processed row by row, and scanned in a vertical column-by-column scan with each of the shifted regions. Two or more rows may be processed at a time. For a +/-7 pixel search, two or four comparison processors are provided, one (or one pair) processing odd-numbered blocks and the other (or other pair) processing even-numbered blocks. For a +/-15 pixel search, four or eight processors are provided. The vertical scan is provided using a serial FIFO store including eight 8 tap SIPO sections. |
申请公布号 |
DE69032437(D1) |
申请公布日期 |
1998.07.30 |
申请号 |
DE1990632437 |
申请日期 |
1990.04.18 |
申请人 |
BRITISH TELECOMMUNICATIONS P.L.C., LONDON, GB |
发明人 |
PARKE, IAN, IPSWICH, SUFFOLK IP5 7UG, GB |
分类号 |
H04N7/32;G06T7/20;H04N7/26 |
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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