HIERARCHICAL MOTION ESTIMATION METHOD USING DYNAMIC SEARCH RANGE DETERMINATION
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United States of America Patent
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Issued Date -
Jun 9, 2011
app pub date -
Dec 7, 2009
filing date -
Dec 7, 2009
priority date (Note) -
Abandoned
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Abstract
A hierarchical motion estimation method implemented in a plurality of levels is disclosed. The hierarchical motion estimation method is used for estimating motion vectors of a frame. The frame being partitioned into blocks at a first level, and each block of the first level is partitioned into a plurality of blocks at a second level. The method includes selecting reference blocks at the first level for a specific block at the second level and determining a search range for the specific block at the second level by referring to motion vectors, which are known, of the reference blocks at the first level. By using such a method, the motion vectors of a frame can be rapidly and accurately estimated.
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