Multi-resolution Morphological Representation of Terrains
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Date
2006
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
Mesh-based terrain representations provide accurate descriptions of a terrain, but fail in capturing its morphological structure. The morphology of a terrain is defined by its critical points and by the critical lines joining them, which form a so-called surface network. Besides being compact, a morphological terrain description supports a knowledge-based approach to the analysis, visualization and understanding of a terrain dataset. Moreover, because of the large size of current terrain data sets, a multi-resolution representation of the terrain morphology is crucial. Here, we address the problem of representing the morphology of a terrain at different resolutions. The basis of the multi-resolution terrain model, that we call a Multi-resolution Surface Network (MSN), is a generalization operator on a surface network, which produces a simplified representation incrementally. An MSN is combined with a multi-resolution mesh-based terrain model, which encompasses the terrain morphology at different resolutions. We show how variable-resolution representations can be extracted from an MSN, and we present also an implementation of an MSN in a compact encoding data structure.
Description
@inproceedings{:10.2312/LocalChapterEvents/ItalianChapConf2006/045-051,
booktitle = {4th Eurographics Italian Chapter Conference},
editor = {S. Battiato and G. Gallo and F. Stanco},
title = {{Multi-resolution Morphological Representation of Terrains}},
author = {Danovaro, E. and Floriani, L. De and Vitali, M. and Papaleo, L.},
year = {2006},
publisher = {The Eurographics Association},
ISBN = {3-905673-58-4},
DOI = {/10.2312/LocalChapterEvents/ItalianChapConf2006/045-051}
}