发明名称 |
Memory control apparatus and efficient search pattern for block-matching motion estimation |
摘要 |
A memory control apparatus for block-matching motion estimation and an associated search pattern for processing video sequence in real-time are described in this disclosure. The motion estimation subsystem utilizes a set of memory banks to store a section of the reference picture used for computing the differences between an underlying block and a spatially shifted reference block. The memory control apparatus derives the memory addresses for storing the reference picture region in the memory banks in such a way that a row or a column of data from the reference block can be accessed in parallel without wait. The row- or column-data are then made available to the parallel computation unit for computing the block difference in a single processing cycle. An associated spiral search pattern that covers the whole search region is also described that minimizes the required data access and consequently saves power consumption. Combined with a search-stop criterion, the search pattern will result in early search termination during the block-matching motion estimation process and consequently conserves more power.
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申请公布号 |
US2003016748(A1) |
申请公布日期 |
2003.01.23 |
申请号 |
US20010910684 |
申请日期 |
2001.07.20 |
申请人 |
DIVIO, INC. |
发明人 |
HWANG MICHAEL Y.T.;LEE CHUNG-TA;LIU YI |
分类号 |
H04N5/14;H04N7/26;(IPC1-7):H04N7/12 |
主分类号 |
H04N5/14 |
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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