Algorithms for Digital Terrain Data Modeling.

reportActive / Technical Report | Accession Number: ADA119254 | Open PDF

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 DEMs into a set of contour strings for display, and smoothing DEMs 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 DEMs are compared. Visual and statistical measures of performance are presented. Author

Author(s):
Davis, Dale M. ; Downing, James A. ; Zoraster, Steven
Author Organization(s):
ZYCOR INC AUSTIN TX
Descriptive Note:
Final rept. Sep 80-Feb 82,
Pagination:
0221

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
020-14-05, ETL-0302
Contract/Grant Number(s):
DAAK70-80-C-0248
Task Number(s):
AH
Project Number(s):
4303
Monitor Series:
0302
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_6.3_Net Management; JCA_6_Net Centric; JCA_5_Command and Control; JCA_5.3_Planning; JCA_1.2.5_Lessons Learned; JCA_5.5.2_Task; JCA_5.5_Direct; JCA_1_Force Support; JCA_1.3_Human Capital Management
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Digital maps, *Algorithms, *Terrain models, *Digital simulation, *Mapping, Test methods, Grids, Matrices(Mathematics), Mapping(Transformations), Minicomputers, Elevation, Contours, Two dimensional, Interpolation
Field(s)/Group(s):
Cartography and Aerial Photography, Theoretical Mathematics, Computer Hardware
Keyword(s):
DEM(Digital Elevation Models), PE64701B, WUETL4303AH02
Report Date:
1982 Jul 01