Terrain modeling with uncertainty for geographic information systems

Miguel Angel Garcia

doi:10.1117/12.182853

17 August 1994 Terrain modeling with uncertainty for geographic information systems

Miguel Angel Garcia

Proceedings Volume 2357, ISPRS Commission III Symposium: Spatial Information from Digital Photogrammetry and Computer Vision; (1994) https://doi.org/10.1117/12.182853
Event: Spatial Information from Digital Photogrammetry and Computer Vision: ISPRS Commission III Symposium, 1994, Munich, Germany

Abstract

This paper presents the application of a recently developed geometrical modeling technique to the representation of natural terrain for geographic information systems. The original method allows the approximation of 3D irregular triangular meshes with smooth parametric surfaces (Garcia, 1993). This method behaves rather similarly to traditional tensor-product schemes, such as NURBS, but operates upon irregular meshes of control points. The obtained surfaces can be locally modified through weighting factors associated with the control points. This paper proposes the use of those factors to represent geometrical uncertainty. The original method was extended afterwards (Garcia, 1994) allowing the interpolation of triangular meshes. The current paper reviews both techniques and introduces a unified model that integrates them into a single representational tool. The theoretical concepts are illustrated with several examples that include real terrain models.

Citation Download Citation

Miguel Angel Garcia "Terrain modeling with uncertainty for geographic information systems", Proc. SPIE 2357, ISPRS Commission III Symposium: Spatial Information from Digital Photogrammetry and Computer Vision, (17 August 1994); https://doi.org/10.1117/12.182853

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