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)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1982
Accession Number
ADA119254

Entities

People

  • Dale M. Davis
  • James A. Downing
  • Steven Zoraster

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Computations
  • Computer Programming
  • Computer Programs
  • Computers
  • Control Surfaces
  • Data Sets
  • Databases
  • Difference Equations
  • Digital Data
  • Power Spectra
  • Random Number Generators
  • Standards
  • Terrain Models
  • Two Dimensional
  • Weighting Functions

Readers

  • Computer Vision.