Identification Method of Topographic Surfaces Models

Abstract

The worked out modeling methods of topographic surfaces allow nowadays to reflect, with different degree of adequacy, the real characteristics of the subject modeling. One of the main applied tasks is representation of continuous topographic surface in digital form, using final memory volume. The well-known topographic modeling systems (geographical information systems) comprise various models—Digital Elevation Model (DEM), Digital Terrain Model (DTM) and etc. and they are oriented on complex variety of practical tasks solving. As a rule topographic surface modeling systems pursue the following common tasks: DTM model generation, DTM change and optimization, DTM analysis, DTM visualization, DTM and produced information rendering. The most part of DTM is being made on the base of one of two structural data types: regular network or TIN (Triangulated Irregular Network). The matters of choosing TS modeling method in a great number of existing methods are considered in this article. Different regularity criteria are suggested.