Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1994-12-30
1996-10-01
Chin, Tommy P.
Television
Image signal processing circuitry specific to television
Motion vector generation
348413, H04N 728
Patent
active
055614752
ABSTRACT:
An apparatus for detecting motion vectors between a current frame and a previous frame of video signals based on a block matching motion estimation approach comprises a variable block formation section for defining a variable search block from the current frame, the variable search block is extended from a selected search block which is a plain picture block without having an edge of an object within the current frame; and a motion-estimation section for estimating the variable search block with respect to each of candidate blocks included in the previous frame to provide a number motion vector and an error function corresponding thereto, the motion vector representing the displacement of pixels between the search block and a candidate block which yield a minimum error function.
REFERENCES:
patent: 5036393 (1991-07-01), Samad et al.
Jin Tae Kim et al., "A variable size block matching algorithm using local characteristics of images", Journal Of The Korean Institute Of Telematics And Electronics, vol. 29b, No. 7, pp. 540-547, Jul. 1992.
Nasrabadi et al., "Interframe hierarchical vector quantization", Optical Engineering, vol. 28, No. 7, pp. 717-725, Jul. 1989.
P. Strobach, "Tree-structured scene adaptive coder", IEEE Transactions On Communications, vol. 38, No. 4, pp. 477-486, Apr. 1990.
Au A.
Chin Tommy P.
Daewoo Electronics Co. Ltd.
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