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Proceedings Paper

Anisotropic diffusion of color images
Author(s): Guillermo Sapiro; Dario L. Ringach
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Paper Abstract

A new approach for anisotropic diffusion processing of color images is proposed. The main idea of the algorithm is to facilitate diffusion of the image in the direction parallel to color edges. The direction of maximal and minimal color change at each point is computed using the first fundamental form of the image in (L*a*b*) color space. The image (Phi) evolves according to an anisotropic diffusion flow given by (delta) (Phi) /(delta) t equals g((lambda) +, (lambda) -)(delta) 2(Phi) /(delta) (xi) 2, where (xi) is the direction of minimal color change. The diffusion coefficient, g((lambda) +, (lambda) -), is a function of the eigenvalues of the first fundamental form, which represent the maximal and minimal rates of color change. Examples for real color images are presented.

Paper Details

Date Published: 22 April 1996
PDF: 12 pages
Proc. SPIE 2657, Human Vision and Electronic Imaging, (22 April 1996); doi: 10.1117/12.238745
Show Author Affiliations
Guillermo Sapiro, Hewlett-Packard Labs. (United States)
Dario L. Ringach, New York Univ. (United States)

Published in SPIE Proceedings Vol. 2657:
Human Vision and Electronic Imaging
Bernice E. Rogowitz; Jan P. Allebach, Editor(s)

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