| SPC 
| 0.3/ 
feas 
acci 
by f 
cati 
0.2 
Dig 
| 3D 
a su 
pos: 
age 
trac 
pare 
top: 
tail: 
Figure 9: Oblique view of stereo-derived DEM. Figure 10: Oblique view of map-derived DEM. mog 
tion 
to 1 
ther 
| atel 
ub d 
Zs 
  
  
  
  
  
+ 
+ N — 
N 21903 
NN 
o 
%, + 
   
  
  
  
  
  
  
Figure 12: Contour lines of map-derived DEM. 
5 CONCLUSIONS 
Investigations into the potential of mapping in small 
and large scales using multiple scale image data have 
been carried out in the presented study. Geocoded 
images have been generated from the image data at 
appropriate pixel resolution and compared to avail- [4] 
able cartographic data like topographic maps or ortho- 
photo maps. Basically, the accuracy of this image-to- 
map transformation is limited by the pixel size, i.e. 
the scale, of the input image data. Hence, an interac- 
tion of this parameter and a reasonable cartographic 
scale of the output product is given. 
  
For a small scale Landsat TM image a mismatch on | 
ground equivalent to about 0.2/0.1 millimeters in to- | 
pographic 1 :100 000/1 :200 000 maps was determined. 
Medium scale image data, in particular panchromatic 
Figure 13: Superposition of stereo-derived DEM and 
geocoded aerial image. 
190