Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1995-12-26
1997-11-18
Lee, Richard
Television
Image signal processing circuitry specific to television
Motion vector generation
348420, H04N 730
Patent
active
056893124
ABSTRACT:
A method for detecting motion vectors comprises the steps of (a) producing a plurality of differential search blocks, wherein each differential search block includes differential pixels defined by differences between luminance levels of the pixels in a search block and a mean luminance level of the pixels in the search block, (b) producing a multiplicity of differential candidate blocks, wherein each differential candidate block includes differential pixels defined by differences between luminance levels of the pixels in a candidate block and a mean luminance level of the pixels in the candidate block, (c) motion-estimating a search block with respect to each of the candidate blocks associated with a corresponding search region to produce displacement vectors corresponding thereto and motion-estimating a differential search block with respect to each of the differential candidate blocks associated with a corresponding search region to produce error functions corresponding thereto, and (d) choosing a minimum error function to define a displacement vector corresponding to the minimum error function as a motion vector for the search block.
REFERENCES:
patent: 4777530 (1988-10-01), Kondo
patent: 4901149 (1990-02-01), Fernando et al.
patent: 4972260 (1990-11-01), Fujikawa et al.
patent: 5453801 (1995-09-01), Kim
patent: 5561475 (1996-10-01), Jung
patent: 5596370 (1997-01-01), Jung
Daewoo Electronic Co. Ltd.
Lee Richard
LandOfFree
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