Algorithms for Digital Terrain Data Modeling.
Abstract
Algorithms and test results are described for three different general operations used in computerized modeling and mapping. The algorithms are used for transforming strings of contour data into digital elevation models (DEM), transforming DEM's into a set of contour strings for display, and smoothing DEM's using several filtering and convolution techniques. The use of DEM smoothing operations for the simplification of contour lines is examined and two methods of controlling filter effects for this application are presented. As a separate reserach effort two interpolation algorithms which can be used for resampling DEM's are compared. Visual and statistical measures of performance are presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1982
- Accession Number
- ADA119254
Entities
People
- Dale M. Davis
- James A. Downing
- Steven Zoraster