Method and apparatus for motion estimation using variable block size of hierarchy structure
First Claim
1. A method for a motion estimation using a variable block size of a hierarchy structure, the method comprising:
- a first step of calculating motion vectors of minimum unit variable blocks;
a second step of determining similarities of the calculated motion vectors between minimum unit variable blocks in a higher hierarchy;
a third step of establishing a mode of a variable block according to the determined similarities; and
a fourth step of deciding a motion vector with respect to the mode established variable block.
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Abstract
Disclosed is a method and apparatus for a motion estimation using a variable block size of a hierarchy structure. The method includes: calculating each of a motion vector of a desired minimum unit variable block; determining a similarity of the calculated motion vectors between the minimum unit variable blocks in a higher hierarchy including the minimum unit variable block; establishing a mode of the variable block according to the determined similarity; and deciding a motion vector with respect to the mode established variable block. The complexity of the method of compressing a motion picture of a hierarchy structure having a plurality of block sizes can be reduced by selecting a mode of the optimal block size on the basis of a motion vector with respect to the minimum unit and the cost occurred at that time without performing the motion estimation with respect to each mode each time.
207 Citations
17 Claims
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1. A method for a motion estimation using a variable block size of a hierarchy structure, the method comprising:
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a first step of calculating motion vectors of minimum unit variable blocks;
a second step of determining similarities of the calculated motion vectors between minimum unit variable blocks in a higher hierarchy;
a third step of establishing a mode of a variable block according to the determined similarities; and
a fourth step of deciding a motion vector with respect to the mode established variable block. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for a motion estimation using a variable block size of a hierarchy structure, comprising:
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motion vector calculating means for calculating motion vectors of minimum unit variable blocks;
variable block mode establishment means for determining similarities of the calculated motion vectors between minimum unit variable blocks in a higher hierarchy, and establishing a mode of a variable block according to the determined similarities; and
motion vector decision means for deciding the motion vector with respect to the mode established variable block. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification