Open Access

A Color Topographic Map Based on the Dichromatic Reflectance Model

EURASIP Journal on Image and Video Processing20082008:824195

https://doi.org/10.1155/2008/824195

Received: 19 July 2007

Accepted: 21 January 2008

Published: 13 February 2008

Abstract

Topographic maps are an interesting alternative to edge-based techniques common in computer vision applications. Indeed, unlike edges, level lines are closed and less sensitive to external parameters. They provide a compact geometrical representation of images and they are, to some extent, robust to contrast changes. The aim of this paper is to propose a novel and vectorial representation of color topographic maps. In contrast with existing color topographic maps, it does not require any color conversion. For this purpose, our technique refers to the dichromatic reflectance model, which explains the distribution of colors as the mixture of two reflectance components, related either to the body or to the specular reflection. Thus, instead of defining the topographic map along the sole luminance direction in the RGB space, we propose to design color lines along each dominant color vector, from the body reflection. Experimental results show that this approach provides a better tradeoff between the compactness and the quality of a topographic map.

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Authors’ Affiliations

(1)
Institut d'Electronique Fondamentale, CNRS UMR 8622, Université Paris-Sud 11

Copyright

© M. Gouiffès and B. Zavidovique. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.