International Archives of Photogrammetry and Remote Sensing, Vol. 32, Part 7-4-3 W6, Valladolid, Spain, 3-4 June, 1999 
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Fig. 3. Image detail from the test area ‘Karlsruhe-Nord’. 
Fig. 5. Triangulation network using vegetation-free pixels. 
y ■■ V 
Fig. 4. Detected vegetation-free pixels. 
Fig. 6. Filtering of valid triangles. 
Fig. 8. Geometric overlap of DLM (in black) and segments.