le, 1999 
International Archives of Photogrammetry and Remote Sensing, Vol. 32, Part 7-4—3 W6, Valladolid, Spain, 3-4 June, 1999 
137 
— part-of 
— con-of 
— is-a 
temp-rel 
esentations of 
or probability 
homogenous 
regions. The 
image of the 
lages. Figure 
Jail (marked 
le white ones 
compactness, 
nding image 
1 prior to the 
irding to the 
mantling, the 
pear as small 
c width and 
net, which is 
. To limit the 
rhood of the 
earch area in 
assuming an 
:d to confuse 
f Fig. 7a the 
the detected 
ucks is larger 
le hypothesis 
cutively, the 
ited. A final 
ag becomes 
id is known. 
Figure 7. (a) Aerial image of the Hannover fairground, (b) Classification result for the class Hall (grey) and selected hall candidates (white), 
(c) Detail marked in (a): Search area for trucks on the fairground derived from the found halls (dark) and extracted trucks (white).