“TT Tm 
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i IDT GHT is 
DIGITAL TERRAIN MODEL CREATED ON THE BASIS OF 
PHOTOGRAL 
LEMETRIC MEASUREMENTS AND ITS APPLICATIONS 
Florian Dzwigalowski 
Institute of Geodesy and Cartography 
Warsaw, Poland 
ABSTRACT 
Ihe method of creation of the digital terrain model /DTM/ 
from the stereoplotter coordinates is described. The 
measured coordinates are first transformed to the common 
coordinate system and then the heights in the knots 
of square net, which is uniform for the whole object, are 
interpolated. As a final result the DTM is given in the 
form of known heights of the knots of Square net arranged 
in an assummed order and divided into sections.The chosen 
way of creating of the DTM make automation measurements 
and calculations possible. 
Ihe DTM ereated in a given above way was used for: de- 
termination of the vertical displacement of the terrain 
surface in mining areas, calculation of the volume of 
mass stored in a containers or on a dumps and plotting 
of a shope maps. The method is used in few surveying 
companies in Poland, 
1. INTRODUCTION 
The works on the method of creating digital terrain mo- 
del were started in relation to examination of height 
deformations for mining terrain surfaces. Height defor- 
mations caused by great rapid movements of terrain sur- 
face should be determined as quickly as possible.This can 
be done by comparison of contour lines existing on perio- 
dically prepared topographic maps. The other Solution is 
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