Computational Aspects of Color Constancy

We examine color constancy algorithms based on finite-dimensional linear models of surface reflectance and illumination from a computational point of view. It is shown that, within finite dimensional models, formulation and solution of color constancy are determined by the choice of basis functions, the number of spectral receptors and the spatial constraints. We analyze some algorithms with examples, and limitations of algorithms for applications on real images. Comments University of Pennsylvania Department of Computer and Information Science Technical Report No. MSCIS-89-50. This technical report is available at ScholarlyCommons: http://repository.upenn.edu/cis_reports/844 Computational Aspects Of Color Constancy MS-CIS-89-50 GRASP LAB 189 R. Bajcsy S. W. Lee A. Leonardis Department of Computer and Information Science School of Engineering and Applied Science University of Pennsylvania Philadelphia, PA 19104-6389 December 1989 Acknowledgements: Support for this research was provided by E.I. DuPont de nemours and Company, Inc. and the following grants: Air Force AFSOR F49620-85-K-0018, ARPA N0014-88-K-0630 Computational Aspects of Color Constancy Ruzena Bajcsy, Sang Wook Lee and Ales Leonardis* Department of Computer and Information Science, University of Pennsylvania, Philadelphia, PA 191 04 *Also at Fakulteta za Elektrotehniko v Ljubljani, University of Ljubljana, Yugoslavia.