NDLI: On the Isomorphism between the Medial Axis and a Dual of the Delaunay Graph

Content Provider	IEEE Xplore Digital Library
Author	Sharma, O. Anton, F. Mioc, D.
Copyright Year	2009
Abstract	In this paper, we show a graph isomorphism between a dual graph of the Delaunay graph of the sampled points and the medial axis of the sampled features. This dual graph captures the fact that two Delaunay triangles share two vertices or an edge. Then, we apply it to the computation of the medial axis of the features selected in an image. The computation of the medial axis of images is of interest in applications such as mapping, climatology, change detection, medicine, etc. This research work provides a way to automate the computation of the medial axis transform of the features of color 2D images. In color images, various features can be distinguished based on their color. The features are thus extracted as object borders, which are sampled in order to compute the medial axis transform. We present also a prototype application for the completely automated or semi-automated processing of (satellite) imagery and scanned maps. Applications include coastline extraction, extraction of fields, clear cuts, clouds, as well as heating or pollution monitoring and dense forest mapping among others.
Starting Page	89
Ending Page	95
File Size	2261960
Page Count	7
File Format	PDF
ISBN	9781424447695
DOI	10.1109/ISVD.2009.18
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-23
Publisher Place	Denmark
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Skeleton Data mining Gold Thermal pollution Informatics Mathematical model Geodesy Image edge detection Biomedical imaging Color topology Voronoi diagram Delaunay graph medial axis graph isomorphism
Content Type	Text
Resource Type	Article

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