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A Fast Hue-Preserving Histogram Equalization Method for Color Image Enhancement using a Bayesian Framework

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4 Author(s)
Menotti, D. ; Univ. de Marne-la-Vallee, Paris ; Najman, L. ; de Araujo, A. ; Facon, J.

In this paper, we introduce a new hue-preserving histogram equalization method based on the ROB color space for image enhancement. We use fi-red, G-green, and B-blue 1D histograms to estimate the histogram to be equalized using a Naive Bayes rule. The histogram equalization is performed by shift hue-preserving transformations. Our method has linear time and space complexities, which complies with realtime applications requirements. A subjective assessment comparing our method and other three is performed. Experiments showed that our method is more robust than the others in the sense that neither unrealistic colors nor over-enhancement are produced.

Published in:

Systems, Signals and Image Processing, 2007 and 6th EURASIP Conference focused on Speech and Image Processing, Multimedia Communications and Services. 14th International Workshop on

Date of Conference:

27-30 June 2007