Television – Bandwidth reduction system – Data rate reduction
Patent
1995-03-20
1998-05-19
Au, Amelia
Television
Bandwidth reduction system
Data rate reduction
348416, H04N 736
Patent
active
057542376
ABSTRACT:
A method for determining motion vectors by employing a multi-tier hierarchical motion estimation comprises (a) motion-estimating each of the hierarchical search blocks of a processing block with respect to a corresponding hierarchical search region to thereby provide motion vectors and minimum error functions corresponding to hierarchical search blocks, (b) comparing the minimum error functions with a predetermined threshold, (c) determining a search block having a least minimum error function among the hierarchical search blocks; and (d) if minimum error functions of one or more search blocks are smaller than the predetermined threshold, determining as a motion vector of the processing block, a motion vector corresponding to a search block of a highest hierarchy among said one or more search blocks and if none of the minimum error functions are smaller than the predetermined threshold, determining a motion vector corresponding to the search block determined in said step (c) as a motion vector of the processing block.
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patent: 5510856 (1996-04-01), Jung
patent: 5537155 (1996-07-01), O'Connell et al.
J.R. Jain et al, "Displacement Measurement and Its Application in Interframe Image Coding", IEEE Transactions on Communications COM-29, No. 12 (Dec. 1981), pp. 1799-1808.
Au Amelia
Daewoo Electronics Co. Ltd.
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