Fig. 1. The testfield 
  
sizes in mm 
sizes in pixels 
in a recoding of 
4x4 squares 
  
size of the small symbols 
size of the large symbols 
thickness of the straight 
distance between the stra 
testfield size 
  
9 - 15 
17 - 25 
lines 2 
ight lines 125 
1200 
  
  
a9 
8.24512 
1 
60 
  
  
Table 2. Geometric parameters of the testfield 
ensure that differences between the pixel size in row direction and the pixel 
size in column direction can be determined by a self-calibrating bundle 
adjustment. / 
The different positions of the camera were simulated by rotations of the 
testfield (fig. 3.). The three phi-rotations of the testfield were 0, 30 and 
  
me 
"d 
~ 
~ 
~ 
camera . 
! \ a 
je 
/ 
Eras : 
| | | B ^ 
I f | 
T /testfield | 
A508 bos: cast 
y SET te rt es e Em A 
ee 
  
  
  
Fig. 2. Configuration of the recordings 
150