A new color constancy algorithm based on the histogram of feasible mappings

Authors:
Jaume Vergés–Llahí;Alberto Sanfeliu
Affiliations:
Institut de Robòtica i Informàtica Industrial, Technological Park of Barcelona;Institut de Robòtica i Informàtica Industrial, Technological Park of Barcelona
Venue:
ICIAR'05 Proceedings of the Second international conference on Image Analysis and Recognition
Year:
2005

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Abstract

Color is an important cue both in machine vision and image processing applications, despite its dependence upon illumination changes. We propose a color constancy algorithm that estimates both the set and the likelihood of feasible color mappings in respect to their frequency and effectiveness. The best among this set is selected to rendered back image colors as seen under a canonical light. Experiments were done to evaluate its performance compared to Finlayson's 2D gamut–mapping algorithm, outperforming it. Our approach is a helpful alternative wherever illumination is poorly known since it employs only image data.