High dynamic range color conversion correction
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United States of America Patent
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Aug 11, 2020
Grant Date -
Feb 15, 2018
app pub date -
Oct 4, 2017
filing date -
Nov 9, 2015
priority date (Note) -
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status (Latency 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 and upsampling the downsampled color space values via a first upsampling filter type to generate second color space values. The technique further includes modifying 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 at least one of (i) storing an indication of the first upsampling filter type in conjunction with a video bitstream associated with the at least one component value, and (ii) transmitting the indication of the first upsampling filter type to a receiving device in conjunction with the video bitstream.
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