ıracy as it 
|. 5). The 
'ome more 
iate values 
th gradient 
e is not so 
1y reduced 
5) perform 
[able 5 for 
ch models 
ye number 
n errors. 
' detection 
as Table 3 
results are 
3, 
tween the 
value t are 
vhite areas 
rived from 
ned by: 
(2) 
be found 
Figure 8 at 
se regions 
| forests. 
cause the 
se regions 
modelled 
| used for 
ints are on 
0 the earth 
ts lied on 
ces much 
'e triangle 
(Figure 9) 
e. 
  
  
Orthophoto of map sheet 1225 with overlay of DTM differences > 30 m (white areas) 
923