Bounded rate near-lossless and lossless image compression
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United States of America Patent
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Jan 30, 2018
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app pub date -
Oct 2, 2013
filing date -
Oct 3, 2012
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Abstract
A system adjusts the quantization parameter used to encode an image sample (e.g., pixel component). The system accesses a quantization parameter for encoding a current image pixel from an implicit rate control and obtains a measure of another image sample within a particular distance from the sample. When the measure meets a predetermined criterion, the system adjusts the quantization parameter, encodes the pixel after adjusting the quantization parameter, and explicitly indicates the adjusting of the quantization parameter to a decoding system.
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