Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1995-07-05
1998-01-20
Lee, Richard
Television
Image signal processing circuitry specific to television
Motion vector generation
348420, H04N 732
Patent
active
057106037
ABSTRACT:
A method for determining a set of motion vectors between a current frame and a reference frame of video signals, which comprises the steps of: (a) one dimensionally comparing a search block from the current frame with said plurality of candidate blocks included in a search region corresponding to the search block, on a block-by-block basis, by employing a one-dimensional error function using horizontal and vertical integral projections to select a predetermined number of candidate blocks in an ascending order of the one-dimensional error; (b) two dimensionally comparing the search block with the predetermined number of candidate blocks selected in step(a) above, on a block-by-block basis, by employing a two-dimensional error function to thereby select a most similar candidate block and derive a motion vector representing the displacement of pixels between the search block and the most similar candidate block so as to assign the derived motion vector as the motion vector for the search block; and (c) repeating steps (a) and (b) until all of the search blocks constituting the current frame are searched against the entire reference frame, to thereby derive a set of motion vectors.
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K. A. Prabhu et al., "Pel-Recursive Motion Compensation Color Coding", Proceedings of ICC 88, pp.2G.8.1-2G.8.5, Jun. 1982.
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J. R. Jain et al, "Displacement Measurement and its Application Interframe Image Coding," IEEE Transactions on Communications, COM-29, No. 12, pp. 1799-1808, Dec. 1981.
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Daewoo Electronics Co. Ltd.
Lee Richard
Pinsak William F.
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