ADAPTIVE COLOR SPACE SELECTION FOR HIGH QUALITY VIDEO COMPRESSION
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United States of America Patent
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Issued Date -
Apr 4, 2013
app pub date -
Sep 30, 2011
filing date -
Sep 30, 2011
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Abandoned
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Abstract
Intraframe video compression schemes are optimized for compression of high quality media, such as media encoded in RGB 4:4:4 format. The optimization uses an encoder that applies a 2D spatial linear transform to subframe portions of image data to generate coefficients, adaptively selects a favored color space representation for representing the coefficients, and signals the selected color space representation in the compressed video stream. The selection of color space for each subframe image portion is performed by comparing the compression efficiency of the portion in each of a plurality of color spaces. To minimize computational cost, efficiencies are estimated by applying rate-distortion models for the applied compression scheme to coefficients of each portion.
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