IEICE Electronics Express
Online ISSN : 1349-2543
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Color constancy algorithm without segmentation
Oh-Seol KwonCheol-Woo Jo
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2013 Volume 10 Issue 13 Pages 20130377

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Abstract

Color constancy algorithms are often used for illuminant compensation. This paper proposes an illuminant compensation method using a camera noise analysis without segmentation. Pixels within highlight regions generally include large amounts of information on the image illuminant. Thus, the analysis of highlight regions provides a relatively easy means of determining the characteristics of an image illuminant. Given that sensor non-uniformity affects illuminant estimation, the proposed method selects valid pixels within a highlight region by analyzing the chromatic noise characteristics of the camera. The illuminant is then estimated using a modified dichromatic reflectance model based on the selected valid pixels. Experimental results confirm that the proposed method is superior to other conventional methods.

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© 2013 by The Institute of Electronics, Information and Communication Engineers
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