Experiments using real images are conducted on a variety of color constancy algorithms (Chromagenic, Greyworld, Max RGB, and a Maloney-Wandell extension called Subspace Testing) in order to determine whether or not extending the number of channels from 3 to 6 to 9 would enhance the accuracy with which they estimate the scene illuminant color. To create the 6 and 9 channel images, filters where placed over a standard 3-channel color camera. Although some improvement is found with 6 channels, the results indicate that essentially the extra channels do not help as much as might be expected.
Presented at the SPIE Human Vision and Electronic Imaging XII conference, Jan. 2007.
Mosny, M., and Funt, B. "Multispectral Color Constancy: Real Image Tests." Proc. SPIE Human Vision and Electronic Imaging XII, San Jose, Jan. 2007, Volume 6492.
Proc. SPIE Human Vision and Electronic Imaging XII
Multispectral Color Constancy: Real Image Tests
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