395 
The accuracy of tested algorithms are not satisfactory in 
all cases especially for the planned subsequent automatic 
classification processing. 
But the previous provisional results encourage us to look 
out further the shown possible way. 
REFERENCES 
Lichtner, W. 1981, Anwendungsmöglichkeiten der Raster 
datenverarbeitung in der Kartographie: Wiss.Arbeiten der 
Fachrichtung Vermessungswesen der Universität Hannover, 
Nr. 105, ISSN 0174-1454 , Hannover 1981, FRG 
Woetzel, G. 1977, A Fast and Economic Scan-to-Line 
Conversion Algorithm: GMD-Mittei1ungen, St.Augustin 1977, 
FRG