split up 
"relation 
«ample 
f. 
  
ficient 
er Pp) 
er p,) 
Fig. 8 and 9 give a better overview than the numerical results of table 1. The 
correlation accuracy is plotted versus the image SNR. Again white (fig. 8) and 
black (fig. 9) points are evaluated independently. 
In both cases results are similar: The phase correlation function e) gives best 
results and even in images with an SNR of 1.0 achieves almost 100 % accuracy if 
good correlation points are selected (fig. 8). Worst results show the Laplace 
coefficient. A reason for this may be the special type of the random noise 
distribution. 
  
aT (GENAUIGKEIT 
  
0.81 
061 
  
044 
0.24 
  
  
1 2 3 à 5 SNR 
  
  
  
Fig. 8: Correlation Accuracy (white points) 
  
IGENAUIGKEIT 
104 
0.8 
06 
04 
  
0.24 ji c jc 
  
  
1 2 8 4 5 SNR 
  
  
  
Fig. 9: Correlation Accuracy (black points) 
75