High dynamic range color conversion correction
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United States of America Patent
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Jul 14, 2020
Grant Date -
Feb 1, 2018
app pub date -
Oct 4, 2017
filing date -
Nov 9, 2015
priority date (Note) -
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Abstract
One embodiment of the present invention sets forth a technique for correcting color values. The technique includes downsampling first color space values to generate downsampled color space values, upsampling the downsampled color space values to generate second color space values, and determining a first new value for at least one component value included in the downsampled color space values based on a first component value included in the first color space values, a second component value included in the second color space values, and an approximation of a nonlinear transfer function. The technique further includes determining that a first color component value associated with the first new value is outside of a color space range, and determining a second new value for the at least one component value, where the first color component associated with the second new value is within the color space range.
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