Effect of color illumination on color contrast in color vision application

Zhen-min Zhu; Xing-hua Qu; Hai-yu Liang; Guo-xin Jia

doi:10.1117/12.869924

11 November 2010 Effect of color illumination on color contrast in color vision application

Zhen-min Zhu, Xing-hua Qu, Hai-yu Liang, Guo-xin Jia

Proceedings Volume 7855, Optical Metrology and Inspection for Industrial Applications; 785510 (2010) https://doi.org/10.1117/12.869924
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

This paper presents a technique to choose appropriate light source for maximizing the contrast between the object and the background surfaces in color vision application. From the physics of color image formation, three parameters which affect generating signal of color digital camera are researched. An optimal color illumination for enhancing color contrast can be found by maximizing these surfaces spectral reflectance. The discrimination of these surfaces spectral reflectance was estimated by using average color difference in CIELab color space. A printed color patch which have seven several colored characters was used to demonstrate the approach. For each colored character, appropriate Light Emitting Diode (LED) illumination was selected to maximize the discriminability, which is more suitable than D65 illumination. These experiments illustrate the usefulness of properly chosen color illumination in color vision application.

Citation Download Citation

Zhen-min Zhu, Xing-hua Qu, Hai-yu Liang, and Guo-xin Jia "Effect of color illumination on color contrast in color vision application", Proc. SPIE 7855, Optical Metrology and Inspection for Industrial Applications, 785510 (11 November 2010); https://doi.org/10.1117/12.869924

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