Abstract
During the last century, the amount and the complexity of land surface data have enormously increased and have shown the need for efficient automated analysis methods. In this paper we focus our interest on methods helping to analyze Digital Elevation Models. A finite element method in shape generalization of Digital Elevation Models is presented and numerical results are given. The finite element scheme is a fully discrete approximation of a diffusion equation of forward-backward Perona-Malik type. C 0 -piecewise linear elements in space and the backward Euler difference scheme in time are used.
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