Gray World based Color Correction and Intensity Preservation for Image Enhancement
Images captured by digital cameras are vulnerable to quality degradations due to non-ideal illumination conditions such as dominated lighting source colors, where images so obtained may not faithfully reproduce the scene chromatics accurately. While it is a complicated process to control the scene illumination, color correction used as a postprocessing procedure, is becoming an attractive solution. This research has developed an approach for color correction based on a modified implementation of the gray world assumption. The image color is adjusted by employing a gamma correction to satisfy the gray world assumption and avoid color saturation as encountered in the conventional approach. In order to further improve the image visual quality, an intensity preservation criterion is adopted as an additional means to produce the resultant image. With the normalization of intensity in accordance with the original image, an enhanced image both in color and intensity, is finally obtained. A collection of color images are used in an experiment to verify the proposed algorithm. Results have indicated that the proposed method is effective in producing enhanced images in the context of color enhancements.
N.M. Kwok D. Wang X. Jia S.Y. Chen G. Fang Q.P. Ha
School of Mechanical and Manufacturing Engineering The University of New South Wales, Australia School of Information Technology and Electrical Engineering The University of New South Wales, Austr College of Computer Science Zhejiang University of Technology, 310023 Hangzhou, China School of Engineering University of Western Sydney, Australia School of Electrical, Mechanical and Mechatronic Systems University of Technology Sydney, Australia
国际会议
2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)
上海
英文
1008-1012
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）