Method for preserving image detail when adjusting the tone scale of a digital color image
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United States of America Patent
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Sep 17, 2002
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N/A
app pub date -
Dec 31, 1998
filing date -
Dec 31, 1998
priority date (Note) -
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Abstract
A method for preserving spatial detail when adjusting the tone scale of a digital color image, the method comprises receiving a digital color image; providing a tone scale function for adjusting the tone scale of the digital color image; generating a luminance signal from the digital color image; using the tone scale function and the control signal applied to each color channel of the digital color image to produce an enhanced digital color image.
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