H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/12 (2006.01) H04N 7/26 (2006.01) H04N 7/50 (2006.01)
Patent
CA 2130779
A novel method and apparatus for use in digital video compression provides improved block-based motion compensation using the global motion of a video frame. A video frame comprising a plurality of blocks may be compressed for transmission using block motion vectors. Motion vectors are generated by block matching a block to be coded with a block within a reference frame and determining the displacement therebetween. To effect block matching, motion compensation techniques define a search window within one or more reference frames within which a displaced block will be found. According to the present invention, the location of the search window within a reference frame is defined using the global motion of the frame.
American Telephone And Telegraph Company
Kirby Eades Gale Baker
LandOfFree
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