Color balanced compression in dynamic range mismatched color systems

摘要

Methods, systems and processor-readable media for color balanced compression in dynamic range mistmatched color environments. An input L* can be compensated based on L*min in a destination space with respect to shadow colors while configuring a perceptual LUT during a profile phase. Input opponent color components a* and b* can be compressed based on how much L* is compensated to generate newly compressed L*a*b* values. The newly compressed L*a*b* values can be treated as an output L*a*b* to configure the perceptual LUT for color balanced compression thereof. Finally, an operation can be performed for recording in the output LUT, optimized CMYK values with respect to the output L*a*b* to configure the perceptual LUT in an ICC profile and result in the color balanced compression thereof.

主权项

1. A method for color balanced compression in dynamic range mismatched color environments, said method comprising:
compensating input L* based on L*min in a destination space with respect to shadow colors of an image while configuring a perceptual LUT during a profile phase, wherein L* represents a luminance value and L*min represents a minimum luminance value in an L*a*b* color space; compressing input opponent color components a* and b* based on how much L* is compensated to generate newly compressed L*a*b* values for said image to be rendered via a rendering device; and treating said newly compressed L*a*b* values as an output L*a*b* to configure said perceptual LUT for color balanced compression thereof for rendering of said image via said rendering device.