For dielectric inhomogeneous objects, the perceived reflections are the linear combinations of diffuse and specular reflection components. Specular reflection plays an important role in the fields of image analysis, pattern recognition, and scene synthesis. Several methods for the separation of the diffuse and the specular reflection components have been presented based on image segmentation or local interaction of neighboring pixels. We propose a simple and effective method for specularity removal in a single image on the level of each individual pixel. The chromaticity of diffuse reflection is approximately estimated by employing the concept of modified specular-free image, and the specular component is adjusted according to the criterion of smooth color transition along the boundary of diffuse and specular regions. Experimental results indicate that the proposed method is promising when compared with other state-of-the-art techniques, in both separation accuracy and running speed.
© 2009 Optical Society of America
Original Manuscript: September 23, 2008
Revised Manuscript: March 27, 2009
Manuscript Accepted: April 9, 2009
Published: May 6, 2009
Vol. 4, Iss. 7 Virtual Journal for Biomedical Optics
Hui-Liang Shen and Qing-Yuan Cai, "Simple and efficient method for specularity removal in an image," Appl. Opt. 48, 2711-2719 (2009)