Perceptual radiometric compensation system adaptable to a projector-camera system

A perceptual radiometric compensation system adaptable to a projector-camera system, the compensation system comprising:

• a luminance-to-tristimulus transform subunit configured to transform a luminance value to a tristimulus value;
• a color appearance model (CAM) forward transformation subunit configured to perform on the tristimulus value to derive appearance attributes associated with a white projection surface, a largest tristimulus value being used as a white point input to the CAM forward transformation subunit;
• a CAM backward transformation subunit configured to perform on the appearance attributes associated with a colored projection surface to derive a tristimulus value, a largest tristimulus value associated with the color projection surface being scaled down and used as a white point input to the CAM backward transformation subunit;
• and
• a tristimulus-to-luminance transform unit configured to transform the tristimulus value back to the luminance value;
• wherein the CAM forward transformation subunit and the CAM backward transformation subunit each receives an adaptation degree in order to adjust hue of the input image toward tone of the colored projection surface.