Hue Preserving Color Image Enhancement Using Multi-Scale Morphology.
Susanta Mukhopadhyay, Bhabatosh Chanda · 2002
A multi-scale morphological algorithm for local contrast enhancement of color images is presented in this paper. The three color components are used to construct the magnitude image and the direction cosines of the color vectors at each pixel location. The contrast of the magnitude image is enhanced using multi-scale morphological filters. The enhanced red, green and blue channel images are obtained by combining the enhanced magnitude image with the old direction cosines. This hue preserving algorithm is tested on several color images and the results are compared with those of two other standard techniques.