Hierarchical encoding method and apparatus employing background references for efficiently communicating image sequences
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United States of America Patent
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Oct 13, 1992
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app pub date -
May 10, 1991
filing date -
May 11, 1990
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Abstract
A method and apparatus for transmitting a sequence of image frames by encoding interframe error data features the steps of compiling a spatially decomposed image of a background of the sequence of image frames, spatially decomposing a warped image of a previous frame, and spatially decomposing a new input image. The spatially decomposed input image is compared with the spatially decomposed background image and with the spatially decomposed warped image. An error signal defining the spatially decomposed input image is generated based on these comparisons.
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