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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 8 — Sep. 4, 2013

Real-time highlight removal using intensity ratio

Hui-Liang Shen and Zhi-Huan Zheng  »View Author Affiliations


Applied Optics, Vol. 52, Issue 19, pp. 4483-4493 (2013)
http://dx.doi.org/10.1364/AO.52.004483


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Abstract

In this paper, we propose an efficient method to separate the diffuse and specular reflection components from a single image. The method is built on the observation that, for diffuse pixels, the intensity ratios between the maximum values and range values (maximums minus minimums) are independent of surface geometry. The specular fractions of the image pixels can then be computed by using the intensity ratio. For textured surfaces, image pixels are classified into clusters by constructing a pseudo-chromaticity space, and the intensity ratio of each cluster is robustly estimated. Unlike existing techniques, the proposed method works in a pixel-wise manner, without specular pixel identification and any local interaction. Experimental results show that the proposed method runs 4× faster than the state of the art and produces improved accuracy in specular highlight removal.

© 2013 Optical Society of America

OCIS Codes
(120.5700) Instrumentation, measurement, and metrology : Reflection
(330.1690) Vision, color, and visual optics : Color
(150.1135) Machine vision : Algorithms

ToC Category:
Machine Vision

History
Original Manuscript: March 28, 2013
Revised Manuscript: May 23, 2013
Manuscript Accepted: May 24, 2013
Published: June 24, 2013

Virtual Issues
Vol. 8, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Hui-Liang Shen and Zhi-Huan Zheng, "Real-time highlight removal using intensity ratio," Appl. Opt. 52, 4483-4493 (2013)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-52-19-4483

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