Television – Bandwidth reduction system – Data rate reduction
Patent
1995-09-13
1997-06-10
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
348699, H04N 736
Patent
active
056381298
ABSTRACT:
An apparatus, for use in a motion-compensated video signal encoder, for determining a predicted current frame based on a current and a previous frame, comprises: a feature point motion vector(MV) detector for detecting a first set of MVs for feature points; an edge point MV detector for, in each of the edges, detecting one or two neighboring feature points for each of edge points, and determining a second set of MVs for the edge points; a quasi-point detector for detecting quasi-feature points and a third set of MVs therefor, and detecting quasi-edge points and a fourth set of MVs therefor; a non-quasi-point MV detector for detecting a fifth set of MVs for all non-quasi-points, each of the fifth set of MVs being determined by averaging the MVs of one or more neighboring quasi-feature points for each of the non-quasi-points; an arrangement block for arranging the third, the fourth and the fifth sets of MVs to determine a group of MVs for all of the pixels in the current frame; and a motion compensator for providing a pixel value from the previous frame based on the position data of each pixel in the current frame and a MV thereof.
REFERENCES:
patent: 5546129 (1996-08-01), Lee
Britton Howard W.
Daewoo Electronics Co. Ltd.
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