Method and apparatus of image compression
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United States of America Patent
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Issued Date -
Feb 1, 2007
app pub date -
Jul 27, 2005
filing date -
Jul 27, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The differential values of adjacent pixels of a group of pixels are calculated and are re-ordered by referring to the magnitude of pixels of a neighboring line. Another time of calculation of differential values of the re-ordered differential values of adjacent pixels is done and the results go through a procedure of a variable length coding. When complex pattern happened, a market code is asserted to break the calculating the differences of adjacent pixels followed by a new raw pixel data as a reference for a new group of pixel. The variable length coding only keeps the 'Quotient' and 'Remainder' with the 'Divider' implicitly done by prediction.
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