mbined 
n excel- 
t in the 
cially in 
ery use- 
this two 
; CONSU- 
e inter- 
[ory can 
he state 
ted and 
eans of 
  
. impor- 
es from 
lerefore 
sanitati- 
. cannot 
ting Of 
for this 
, colour 
the high 
VI raster 
ool was 
rize the 
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d areas 
mpositi- 
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tions or 
> screen 
3 opera- 
  
Figure 7: Section of an orthoimage superimposed with 
"areas of danger”. 
7. CONCLUSIONS 
By integrating software packages for DTM modelling, 
orthoimage generation and photogrammetric data 
acquisition an operational digital monoplotting system 
has been developed. The specific requirements of fo- 
restry applications have been taken into account and a 
user shell has been designed regarding the fact, that an 
operator skilled in forestry can handle the system. 
Practical tests have shown, that the system is suitable and 
efficient for different applications in map revision, forest 
inventory and forest monitoring. The utilization ofa high 
quality DTM for orthoimage generation and evaluation 
has proven to be adequate. 
Verification of the interpretation results in the field is 
still necessary but can be reduced considerably by 
applying the system. 
References 
Braun, J. 1989: Current status of the PHOCUS deve- 
lopment. Proceedings of the 42th Photogrammetric 
Week, Stuttgart, pp. 41-56. 
Ebner, H., Reinhardt, W., Hößler, R. 1988: Generation, 
Management and utilization of high fidelity digital ter- 
rain models. International Archives of Photogrammetry 
and Remote Sensing, Kyoto, Japan, Vol. XXVII, Part 
B11, pp.556-566. 
Ebner, H., HôBler, R., Würländer, R., 1990: Integration 
von Digitalen Gelándemodellen in Geoinformationssy- 
steme - Konzept und Realisierung. Nachrichten aus dem 
Karten- und Vermessungswesen, Reihe I, Heft 105, pp. 
71-76. 
225 
Mayr, W., 1993: Photogrammetric digital image proces- 
sing at Carl Zeiss. Proceedings of the 44th Photogram- 
metric Week, Stuttgart, pp. 137-142. 
Próbsting, T., 1994: Einsatz von Luftbildern in der Forst- 
wirtschaft in Europa - Ein Überblick. Proceedings of 
Photogrammetrie & Forst, Sept. 1994, Freiburg, pp. 
271-296. 
Schneider, W., Bartl, R., 1994: Forstliche Kartierung 
und GIS-Daten-Erfassung aus Luftbildern nach dem 
Monoplotting-Verfahren. Proceedings of Photogram- 
metrie & Forst, Sept. 1994, Freiburg, pp. 317-328. 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996