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Authors: Csaba Benedek 1 and Tamás Szirányi 2

Affiliations: 1 Pázmány Péter Catholic University, Hungary ; 2 Distributed Events Analysis Research Group, Computer and Automation Institute, Hungary

ISBN: 978-972-8865-73-3

Keyword(s): Shadow, color spaces, MRF.

Related Ontology Subjects/Areas/Topics: Applications ; Computer Vision, Visualization and Computer Graphics ; Image and Video Analysis ; Pattern Recognition ; Segmentation and Grouping ; Software Engineering ; Statistical Approach ; Video Analysis

Abstract: In this paper we address the problem of appropriate modelling of shadows in color images. While previous works compared the different approaches regarding their model structure, a comparative study of color models has still missed. This paper attacks a continuous need for defining the appropriate color space for this main surveillance problem. We introduce a statistical and parametric shadow model-framework, which can work with different color spaces, and perform a detailed comparision with it. We show experimental results regarding the following questions: (1) What is the gain of using color images instead of grayscale ones? (2) What is the gain of using uncorrelated spaces instead of the standard RGB? (3) Chrominance (illumination invariant), luminance, or ”mixed” spaces are more effective? (4) In which scenes are the differences significant? We qualified the metrics both in color based clustering of the individual pixels and in the case of Bayesian foreground-background-shadow segm entation. Experimental results on real-life videos show that CIE L*u*v* color space is the most efficient. (More)

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Paper citation in several formats:
Benedek C.; Szirányi T. and (2007). COLOR MODELS OF SHADOW DETECTION IN VIDEO SCENES.In Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, ISBN 978-972-8865-73-3, pages 225-232. DOI: 10.5220/0002052202250232

@conference{visapp07,
author={Csaba Benedek and Tamás Szirányi},
title={COLOR MODELS OF SHADOW DETECTION IN VIDEO SCENES},
booktitle={Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP,},
year={2007},
pages={225-232},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002052202250232},
isbn={978-972-8865-73-3},
}

TY - CONF

JO - Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP,
TI - COLOR MODELS OF SHADOW DETECTION IN VIDEO SCENES
SN - 978-972-8865-73-3
AU - Benedek, C.
AU - Szirányi, T.
PY - 2007
SP - 225
EP - 232
DO - 10.5220/0002052202250232

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