EuroSDR Projects - Host Ireland

IQR [m]
64
2.5
2.0
1.5
1.0
0.5
0.0
Height
Eaves Hermanni
Ridges Hermanni
Eaves Senaatti
Ridges Senaatti
Linear (Eaves Hermanni)
Linear (Ridges Hermanni)
Linear (Eaves Senaatti)
Linear (Ridges Senaatti)
0 50 100
Laser data use %
Figure 4-9: Target height and plane (mean of north/east) deviations for different targets.
The degree of automation varied significantly among the participants of this test. In general, the laser
data allows higher automation in creating the models. Editing of the complex building models is
needed slowing down the process. Even though some laser-based processes are relatively automatic,
the processes are still under development. In general, the plane target accuracy is affected by the
degree of automation (and method, Figure 4-10). The accuracy of low automation methods is about
20-30 cm, while on high automation methods it is about 60-100 cm (IQR). The target height accuracy
seems to be almost independent of the degree of automation (Figure 4-11). The degree of automation
was estimated as a value from 0 to 10 based on the workflow charts and the procedure descriptions
and comments provided by participants.
Plane accuracy IQR [m]
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Espoonlahti
Hermanni
Senaatti
Amiens
Linear (Espoonlahti)
Linear (Hermanni)
Linear (Senaatti)
Linear (Amiens)
Plane
2 4 6 8 10
Degree of automation
Figure 4-10: Obtained planimetric accuracy (mean of north/east) as a function of automation.
IQR [m]
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Eaves Hermanni
Ridges Hermanni
Eaves Senaatti
Ridges Senaatti
Linear (Eaves Hermanni)
Linear (Ridges Hermanni)
Linear (Eaves Senaatti)
Linear (Ridges Senaatti)
0 50 100
Laser data use %