Television – Bandwidth reduction system – Data rate reduction
Patent
1997-04-10
1999-06-01
Britton, Howard
Television
Bandwidth reduction system
Data rate reduction
382236, H04N 724
Patent
active
059092513
ABSTRACT:
A process for performing image frame fusion on a pixel-by-pixel basis by estimating velocities and occlusions between at least two image frames of a sequence of frames. For each pixel, the possible matchings are those that minimize changes in a selected parameter of the image (generally the grey-level). The process uses a region-growing procedure to reduce the number of possible matchings for each pixel. The output is a decomposition of the images into regions in which pixels move with the same model of velocity or are all occluded. The process includes a multi-scale description of velocities between two images, a multi-scale segmentation of the images into regions having different motion, a correcting term for sampling errors, sub-pixel motion errors and an occlusion estimation step. A preferred embodiment employs pyramidal calculations.
REFERENCES:
patent: 5012336 (1991-04-01), Gillard
patent: 5043810 (1991-08-01), Vreeswijk et al.
patent: 5535302 (1996-07-01), Tsao
patent: 5627905 (1997-05-01), Sebok et al.
Guichard Frederic
Rudin Leonid I.
Britton Howard
Cognitech Inc.
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