Lossless region of interest coding
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United States of America Patent
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Aug 10, 2004
Issued Date -
N/A
app pub date -
Mar 22, 2000
filing date -
Oct 10, 1997
priority date (Note) -
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Abstract
In a method and a device for transmission of S+P transform coded digitized images a mask is calculated by means of which a region of interest (ROI) can be transmitted lossless whereby the ROI can be transmitted and received lossless and still maintaining a good compression ratio for the image as a whole. This is possible since no or very few bits can be used for the remaining part of the image. The calculated mask can also be used for transmitting the coefficients needed for a lossless region of interest during any stage of the transmission.
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