System and method for compressing data
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United States of America Patent
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Jan 27, 2004
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app pub date -
Jul 28, 2000
filing date -
Jul 28, 2000
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Abstract
A system and method for compressing an image into bit streams allows data to be presented in either lossy or lossless quality. A lossy quality presentation results in some measurable degradation of an image's visual quality upon expansion. A lossless quality presentation displays the image in its original form. The method divides the image to be compressed into a plurality of regions. For each region, a plurality of adjacent pixels are selected and organized into a set. The corresponding sets for each respective region are identified as a group. The pixel sets within each group are encoded and arranged into two bit streams associated with each respective group. Next, each group's respective bit streams are written into a primary bit stream of constant size and possibly a supplemental bit stream of variable length for presenting the image in either lossy or lossless quality.
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