116 
Siedler, Hemmleb, Sacher 
Documer 
Fig. 5: Horizontal intersection with definitions of vertical intersections 
The produced image maps in scale 1:25 serve as basis for the documentation and mapping of the façades and their damages. For 
overview purposes also image maps in scale 1:100 were derived. All image maps refer to a global coordinate system, which is visible 
as grid lines in the overview map (see Fig. 8). Every mesh contains a size of 7 x 10 metres on the façade, leading to image maps with 
a size of 28 x 40 centimetres which is well suited for further mapping work on A3 format. Fig. 6 shows a single sheet from the image 
map and Fig. 7 documents the high resolution of the rectified images.