Title

Histogram equalization of the saturation component for true-color images using the C-Y color space

Abstract

Histogram equalization is a well known tool for enhancing the contrast and brightness of grayscale images. Grayscale histogram equalization has been extended to color images with limited success. One common method is to equalize the illumination component, while leaving the saturation and hue components unchanged. This method doesn't improve the overall color saturation of the image. Another approach is to apply equalization techniques in the RGB color space. The difficulty in using the RGB color space is that it does not correspond to human interpretation of color. This paper describes a method for histogram equalization of the saturation component using the color difference (or C-Y) color space. Since equalization of the saturation component alone leads to color artifacts, attention is given to the relationship that exists between saturation and intensity.

Publication Date

12-1-1994

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

2298

Number of Pages

236-247

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

Socpus ID

0028732755 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0028732755

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