ınbul 2004 
al with 
  
toral 
2,000 700,000 
  
toral 
  
  
„700.000 
  
  
     
  
  
= 
Depth (m) 
= 
£000 
Distance (m) 
Figure 5. Bathymetry estimation at S. Erasmo littoral 
(radiometric transect nr.3). R°=0.89 
4.2 Treporti canal 
Four radiometric transects (transects nr.4, 5, 6 and nr.7) were 
traced at Treporti canal (Figure 6). Correlations between the 
real bathymetry and the computed bathymetry are between 0.92 
for the transect nr.5 and 0.67 for the transect nr.7. Figures 7 and 
8 show results. 
  
depths overlayed. 
  
E ~ 20000 mes 20,000 20.000 100.000 120.000 
3H NS 
4000 
  
  
  
anoo 
Depth (m) 
a points extrac 
12200 timated bathymetry (SGA 
  
+16 000 
Distance (m) 
Figure 7. Bathymetry estimation at Treporti canal (radiometric 
transect nr.5). R“=0.92. 
97 
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004 
  
0,00 j 20000 30000 40.000 £0,000 £0000 70000 80000 90,00 100000 
  
Real batymelry 
© Balimetuc points ex 
  
—— Estimated bathymet 
  
E09 - 1E-06x* +0 0001x°- 00 
R° = 06664 
Depth {m} 
  
Distance (m) 
Figure 8. Bathymetry estimation at Treporti canal (radiometric 
transect nr.7). R°’=0.67 
4.3 S. Felice canal 
Four radiometric transects (transects nr.8, 9, 10 and nr.11) were 
traced at S. Felice canal (Figure 9). All transects showed high 
correlations between the real bathymetry and the computed 
bathymetry (R2»0.85) except for the transect nr.10 (R?=0.45). 
Figure 10 show results. 
  
Figure 9. Radiometric transects at S. Felice canal with lagoon 
depths overlayed. 
  
40000 60000 80.000 100,000 120,000 
  
20000 
2000 T = 
: 
  
Depth (m) 
à 
= 
> 
-8 000 Real balyrnetry 
e Datimetnc points extr. 
10,000 
  
Distance (m) 
Figure 10. Bathymetry estimation at S. Felice canal 
(radiometric transect nr.8). R°=0.95.