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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 9 — Sep. 1, 2009
  • pp: 784–787

A modif ied image enhancement algorithm based on color constancy

Cheng Li, Shan Gao, and Duyan Bi  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 9, pp. 784-787 (2009)


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Abstract

According to the color constancy theory, a modified variation Retinex is proposed for improving the visibility of the dark regions in images under insufficient and/or non-uniform lighting conditions. A new penalty functional based on nonlinear diffusion and correlation between the reflectance and the given image is designed for the intensity image enhancement, followed by adaptive color compensation. With high computational efficiency achieved by an improved multi-resolution algorithm, simulation results prove that the proposed method shows more colorful and vivid visual performance, and achieves wider dynamic range with higher objective standard values.

© 2009 Chinese Optics Letters

OCIS Codes
(100.0100) Image processing : Image processing
(100.2980) Image processing : Image enhancement
(330.1720) Vision, color, and visual optics : Color vision

Citation
Cheng Li, Shan Gao, and Duyan Bi, "A modif ied image enhancement algorithm based on color constancy," Chin. Opt. Lett. 7, 784-787 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-9-784

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