Motion compensated video signal processing

Television – Format conversion – Involving both line number and field rate conversion

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348699, 348700, H04N 701

Patent

active

055260535

ABSTRACT:
Motion compensated video signal processing apparatus for interpolating an output image of an output video signal from a corresponding pair of temporally adjacent input images of an input video signal comprises: means for generating a plurality of local motion vectors to represent image motion of respective search blocks of one input image of the pair between that image and the other image of the pair; means for detecting blocks of the output image pointed to by each local motion vector; means for assigning a group of motion vectors to each block of the output image, the group being selected from a set of motion vectors comprising at least those local motion vectors pointing to that block of the output image; and a motion compensated interpolator for interpolating pixels of each block of the output image from the pair of input images, using a motion vector from the group assigned to that block.

REFERENCES:
patent: 5060064 (1991-10-01), Lamnabhi et al.
patent: 5162907 (1992-11-01), Keating et al.
patent: 5347312 (1994-09-01), Saunders

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