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
} }
Citation