Title: Edge-Preserving Smoothing of Natural Images Based on Geodesic Time Functions
Authors: GRAZZINI JACOPOSOILLE PIERRE
Citation: Proceedings of 3rd International Conference on Computer Vision Theory and Applications p. 20-27
Publisher: INSTICC Press
Publication Year: 2008
JRC N°: JRC41450
URI: http://www.visapp.org/PaperList.htm
http://publications.jrc.ec.europa.eu/repository/handle/JRC41450
Type: Contributions to Conferences
Abstract: In this paper, we address the problem of edge-preserving smoothing of natural images. We introduce a novel adaptive approach derived from mathematical morphology as a preprocessing stage in feature extraction and/or image segmentation. Like other filtering methods, it assumes that the local neighbourhood of a pixel contains the essential information required for the estimation of local image properties. It performs a weighted averaging by combining both spatial and tonal information in a single similarity measure based on the local calculation of geodesic time functions from the estimated pixel. By designing relevant geodesic masks, it can deal with specific situation and type of images. We describe in the following two possible strategies and we show their capabilities at smoothing heterogeneous areas while preserving relevant structures in natural - greyscale or multispectral - images displaying different features.
JRC Institute:Institute for Environment and Sustainability

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