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2004
ACM

Adaptive hierarchical RBF interpolation for creating smooth digital elevation models

11 years 5 months ago
Adaptive hierarchical RBF interpolation for creating smooth digital elevation models
This paper presents a fast algorithm for smooth digital elevation model interpolation and approximation from scattered elevation data. The global surface is reconstructed by subdividing it into overlapping local subdomains using a perfectly balanced binary tree. In each tree leaf, a smooth local surface is reconstructed using radial basis functions. Finally a hierarchical blending is done to create the final C1-continuous surface using a family of functions called Partition of Unity. We present two terrain data sets and show that our method is robust since the number of data points in the Partition of Unity blending areas is explicitly specified. Categories and Subject Descriptors
Joachim Pouderoux, Jean-Christophe Gonzato, Ireneu
Added 11 Nov 2009
Updated 11 Nov 2009
Type Conference
Year 2004
Where GIS
Authors Joachim Pouderoux, Jean-Christophe Gonzato, Ireneusz Tobor, Pascal Guitton
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