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http://dx.doi.org/10.5909/JBE.2010.15.3.332

An Image Enhancement Algorithm based on Color Constancy and Histogram Equalization using Edge Region  

Cho, Dong-Chan (Hanyang University, Department of Electronics Computer Engineering)
Kang, Hyung-Sub (Hanyang University, Department of Electronics Computer Engineering)
Kim, Whoi-Yul (Hanyang University, Department of Electronics Computer Engineering)
Publication Information
Journal of Broadcast Engineering / v.15, no.3, 2010 , pp. 332-345 More about this Journal
Abstract
A unified image enhancement method is proposed for high-resolution image which based on color constancy and histogram equalization using edge region. To speed up the method, smaller image is used when parameters of color constancy and histogram equalization are determined. In the color constancy process, nth-derivative of gaussian is applied to x and y axis separately in order to estimate the color of the illumination rapidly. In the histogram equalization process, the histogram obtained from near-edge region is used for the histogram equalization. In the experiments, high-resolution images taken by digital camcorder are used for verifying the performance of the proposed method.
Keywords
Color Enhancement; Contrast Enhancement; Color Constancy; Histogram Equalization;
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