EuroSDR Projects - Host Ireland

5.3 Test Site Oberpfaffenhofen
5.3.1 Areal and Linear Objects
The data set of the Oberpfaffenhofen test site contains agricultural and industrial areas, especially on
the airport area, and is of a resolution of 3 m per pixel. The images have a size of 907 x 658 pixels.
The evaluation of the optical image was carried out by four participants and the evaluation of the SAR
image by six participants.
The airport area, which covers one third of the image, caused more problems in interpretation than
expected. The classification from the participants concerning this region turned out to be extremely
diverse and it was impossible to find a way of analyzing them consistently. Hence, a mask was created
for this region to avoid quantitative analyses. The result of a visual analysis can be found in the next
chapter. Additionally, there were some regions of excavation which were, surprisingly, found by
nearly all interpreters. Therefore, an additional class “excavation area” was introduced for quantitative
analysis.
The following figures (Figure 23 - Figure 28) show the results of quantitative analysis for areal and
linear objects.
120,0
100,0
80,0
60,0
40,0
20,0
0,0
Agriculture - SAR
Int 1 Int 3 Int 5 Int 8 Int 10
120,0
100,0
80,0
60,0
40,0
20,0
0,0
Agriculture - optical
Int 2 Int 4 Int 9
Figure 23: Oberpfaffenhofen Result, Agricultural Area
205