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Communication Dans Un Congrès Année : 2005

Color Constancy based on the Grey-Edge Hypothesis

Résumé

A well-known color constancy method is based on the Grey-World assumption i.e. the average reflectance of surfaces in the world is achromatic. In this article we propose a new hypothesis for color constancy, namely the Grey-Edge hypothesis assuming that the average edge difference in a scene is achromatic. Based on this hypothesis, we propose an algorithm for color constancy. Recently, the Grey-World hypothesis and the max-RGB method were shown to be two instantiations of a Minkowski norm based color constancy method. Similarly we also propose a more general version of the Grey-Edge hypothesis which assumes that the Minkowsky norm of derivatives of the reflectance of surfaces is achromatic. The algorithms are tested on a large data set of images under different illuminants, and the results show that the new method outperforms the Grey-World assumption and the max-RGB method. Results are comparable to more elaborate algorithms, however at lower computational costs.

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Dates et versions

inria-00548503 , version 1 (20-12-2010)

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Citer

Joost van de Weijer, Theo Gevers. Color Constancy based on the Grey-Edge Hypothesis. IEEE International Conference on Image Processing (ICIP), Sep 2005, Genoa, Italy. pp.722-725, ⟨10.1109/ICIP.2005.1530157⟩. ⟨inria-00548503⟩
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