IMAGE COMPRESSION AND/OR DECOMPRESSION
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United States of America Patent
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Issued Date -
Feb 25, 2010
app pub date -
Dec 18, 2007
filing date -
Dec 20, 2006
priority date (Note) -
Abandoned
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Abstract
A method of image compression in which multiple versions of an image are compressed, each version having a different image resolution, comprises the steps of: for one or more compressed versions of the image: decompressing that compressed version to generate decompressed image data; detecting image differences between a higher resolution version of the image and the decompressed image data; and compressing difference data dependent upon the detected image differences.
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