Does extending the number of channels from the 3 RGB sensors of a colour camera to 6 or 9 using a multispectral camera enhance the performance of illumination-estimation algorithms? Experiments are conducted with a variety of colour constancy algorithms (Maloney-Wandell, Chromagenic, Greyworld, Max RGB, and a Maloney-Wandell extension) measuring their performance as a function of the number of sensor channels. Although minor improvements were found with 6 channels, overall the results indicate that multispectral imagery is unlikely to lead to substantially better illumination-estimation performance.
Presented at the CIC'14 Color Imaging Conference, November 2006.
Mosny, M., and Funt, B. "Multispectral Colour Constancy," Proc. CIC'14 Fourteenth IS&T Color Imaging Conference, Scottsdale, AZ, p. 309-313, Nov. 2006.
Proc. CIC'14 Fourteenth Color Imaging Conference
Multispectral Colour Constancy
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