Image enhancement using the modified cosine function and semi-histogram equalization for gray-scale and color images
Article
Williams, B, Hung, CC, Yen, KK et al. (2001). Image enhancement using the modified cosine function and semi-histogram equalization for gray-scale and color images
. 1 518-523. 10.1109/ICSMC.2001.969866
Williams, B, Hung, CC, Yen, KK et al. (2001). Image enhancement using the modified cosine function and semi-histogram equalization for gray-scale and color images
. 1 518-523. 10.1109/ICSMC.2001.969866
This paper outlines two image enhancement operators for gray scale and color images. A modified cosine function was developed for image enhancement, in which some enhanced images may appear a little darker if the average pixel value in the image generally falls below the intermediate value, which is 128 in most image we used in the experiments (256 gray-level). A Semi-Histogram-Equalization (SHE) method is the proposed for enhancement so that it does not matter how dark or bright the image is, it would give a good contrast enhancement. Experimental results show that the proposed operators can enhance gray scale and color images effectively.
