Fast gamma correction method for image reading apparatus
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United States of America Patent
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Sep 13, 2005
Grant Date -
Jan 30, 2003
app pub date -
Jul 26, 2001
filing date -
Jul 26, 2001
priority date (Note) -
Expired
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Abstract
A fast gamma correction method for an image reading apparatus is proposed. The original intervals for normalized output data are combined to merged intervals fewer in number and the original color correction function is replaced by a fitting function in the merged intervals. For an input normalized data, the corresponding merged interval is found and a fitting function associated with the merged interval is invoked to find the corresponding normalized and corrected data.
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