Experiments on Adaptive Soft-Copy Color Reproduction

The perceived colors of an image seen on a self-luminous display are affected by viewing flare and perceptual phenomena, both of which vary with the ambient illumination. A framework for a display system that is capable of adapting its output to varying viewing environments is introduced. The proposed system uses a light sensor such as a CCD camera to estimate properties of ambient illumination around a display and then adjusts display colorimetry for those lighting conditions. The emphasis of this paper is on accounting for various illumination-dependent visual effects through color appearance modeling. The effects of different parameter choices in CIECAM97s were investigated in a series of visual experiments. Paired comparison technique was used to subjectively evaluate the appearance of pictorial images adjusted using CIECAM97s and viewed on an LCD display under three different ambient illumination conditions.