DATA ACQUISITION 
Photogrammetry 
Maps 
Direct field measurements 
   
SOURCE DATA BASE 
Fox-Pro 
dBase 
errors’ 
analysis 
  
GIS APPLICATIONS 
  
IDRISI MGE \ GRASS 
Intergraph 
  
Fig.3. Creation and application of DTM 
CONCLUSIONS 
System SCOP is successfully employed in many 
institutions, mostly in Europe. In last five years, thanks to 
CEl initiative, few countries of eastern Europe joined the 
group of SCOP users. 
Many of GIS tools have got functions to execute DTM 
tasks. However they are rather adapted to realize various 
analyses with terrain model, than to create it. Therefore 
specialistic tools for different tasks are needed, such, for 
example, SCOP for DTM calculation. 
Products of SCOP can be successfully imported to GIS 
systems, like: IDRISI, ERDAS, GRASS, MGE Intergraph. 
In Fig.4. orthophoto image draping over grid in 
perspectives view - example of integration between 
systems SCOP and GRASS is shown. 
References 
Pyka K., Sitek Z.,1993: Remarks on DTM's generation for 
GIS needs. GIS for environment, Conference on Geogra- 
phical Information Systems in environmental studies, 
Krakow, Nov.1993, p.197-203 
Pyka K.,1995: VSD as a tool for source data acquisition 
for elaboration of a Digital Terrain Model using the SCOP 
program. Polish Academy of Sciences - the Cracow 
Section, Geodesy, Photogrammetry and Monitoring of 
Environment, Geodesy 38, p.105-109 
Borowiec M., Pyka K.,1994: Experiences with DTM in 
Department of Photogrammetry and Remote Sensing 
Informatics AGH (in polish). Techn.-Scien. Conference: 
,DTM and its applications", Rogow, p.15-25 
Zhilin Li, 1994: A comparative study of the accuracy of 
DTM's based on various data models. ISPRS Journal of 
Photogrammetry and Remote Sensing 49(1),p.2-11 
  
Fig.4. The orthophotoimage draped over grid in perspective view 
664 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996