Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1993-03-03
1995-11-21
Chin, Tommy P.
Television
Image signal processing circuitry specific to television
Motion vector generation
348409, 348416, H04N 724, H04N 730, H04N 732
Patent
active
054692261
ABSTRACT:
A method of processing a digital video signal to derive motion vectors representing motion between successive fields or frames of the video signal comprises compares the contents of blocks of pixels in a first field or frame of the video signal with the contents of a plurality of blocks of pixels in a following field or frame, and produces for each block in the first field or frame a correlation surface representing the difference between the contents so compared in the two fields or frames. A grown correlation surface is produced for each block in the first field or frame by weighting the correlation surfaces for that block and a plurality of other blocks in an area around that block so as to accentuate features of the correlation surface for that block relative to those for the other blocks, and summing the weighted correlation surfaces. From each grown correlation surface, a motion vector is derived representing the motion of the content of the corresponding block between the two frames in dependence upon a minimum difference value represented by the grown correlation surface.
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Burns James E.
David Morgan W. A.
Chin Tommy P.
Frommer William S.
Le Vu
Sinderbrand Alvin
Sony United Kingdom Limited
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