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Proceedings Paper

Effect of color illumination on color contrast in color vision application
Author(s): Zhen-min Zhu; Xing-hua Qu; Hai-yu Liang; Guo-xin Jia
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Paper 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.

Paper Details

Date Published: 11 November 2010
PDF: 8 pages
Proc. SPIE 7855, Optical Metrology and Inspection for Industrial Applications, 785510 (11 November 2010); doi: 10.1117/12.869924
Show Author Affiliations
Zhen-min Zhu, Tianjin Univ. (China)
Xing-hua Qu, Tianjin Univ. (China)
Hai-yu Liang, Tianjin Univ. (China)
Guo-xin Jia, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 7855:
Optical Metrology and Inspection for Industrial Applications
Kevin Harding; Peisen S. Huang; Toru Yoshizawa, Editor(s)

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