pairs of 
itible la- 
paramet- 
riminant 
observa- 
a (unary 
led as to 
Optimal 
the deci- 
However, 
tic labels 
inary at- 
ment im- 
ire which 
in such a 
has max- 
ibutes si- 
that is, a 
. There- 
nantic la- 
Thus, in 
r geomet- 
troduced 
s at other 
of-the-art 
he image 
netrically 
ize corre- 
segments 
1e precise 
quality of 
ing is ap- 
upper left 
'onstructed 
the recon- 
'e detailed 
all differ- 
ht side of 
(b) shows 
ing in Fig- 
ide do not 
driven by 
onstructed 
found. 
novel ap- 
ling roofs. 
cal imple- 
ıture work 
ble in the 
he goal to 
initialize roof models with even less evidence in 3D space. 
Another research direction, which is pursued at the mo- 
ment, is oriented toward the optimization of the geometric 
accuracy of the models using back-projection into the in- 
put images. 
Acknowledgement: The authors gracefully acknowledge 
support of the ETH project AMOBE II and the European 
IST project CogViSys. 
(a) 
  
(b) 
Figure 8: (a,b): Three-dimensional view of reconstructed 
building roofs. The non-trivial roof structures are captured 
to their full extent. Thin lines show the input 3D segments. 
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