Full text: Actes du Symposium International de la Commission VII de la Société Internationale de Photogrammétrie et Télédétection (Volume 1)

  
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Fig. 7: Reference image with correlation points 
TEST RESULTS 
Results of the correlation test can be found in table 1. The table is split up 
3b I 3 : > . o 
in 'black and white' correlation results, i.e. the black and white correlation 
points are treated independently. A correlation accuracy of 0.5 for example 
means that 50 % of the correlation points have been detected correctly. 
swell I worse?) CORRELATION ACCURACY 
Pattern Matrices of high Variances Pattern Matrices of low Variances 
(6° = 198.4) (BL. 23.6) 
Objective Function?) Objective Function?) 
a b € d e a b € d e 
» 20.0 G,U 1.0 10 1.0 1.0 1.0 10 410 40 10 132 
15.2 G 10: 4:0 1.0 1.0 1.0 1.0 51.0.:4.0 072. 1.0 
10.5 U 1.0 1.0 1.0 1.0 1.0 1.0. 1.0 10 08 1.0 
10.1 G 10 10 10 058 10 1.0.1.0. 1.0 04 1.0 
5.2 U 1.0 10 10 1.0 1.0 0.8 907 "10 064, 10 
3.5 U 1.0 10 1.0 0.7 1.0 0.8 04 0:9 02 1.0 
3.0 G 1.0. 1.0 1.0 10.3. 1.0 0.7 0.6 0.8 0.0.0.9 
2.6 U 1.0.1.0; 1.0° 0.3. 1.0 0.8 04 06 00 0.9 
2.3 U 1.07 1.0 41.0 10.2. 1.0 0.2 0.4 0.51 0.0' 0.9 
24 U 1.0 14.0 11.0. 0.2 / 1.0 0.6 0.4 0.5 0.0 08 
2.0 G 1.0: 0 1.0 40.3. 1:0 0.6 04 0.4 00 0:8 
1.8 U 1.0 3.0. L0 100 1.0 9.5 0.2 0.4 00 07 
1.5 G 9.9 0:9 1.0 10.0 "1.0 0.5 03 G1 00:05 
1.3 U 1.0.0.9 0.9 0.0 1.0 0.2 0.1 0.3 9.0 04 
1.2 G 0.65 0.8. 0.6 00 08 0.2.:0.2- 0.0 0.0 — 0,5 
1.0 G 0.4. 0.5 .0.6. 0.0. 0.6 0:2^-0.0^ 9.9 0:0- Q4 
0.8 G 0.2..0.4.,0.0. 0.0 . 0.4 0.1. 0.0 0.0 CD 0.3 
1) SNR = Signal-to-noise-ratio 3) a: Productmoment correlation coefficient 
2) G = Gaussian distributed, U = Uniform distributed b: Intensity coefficient (parameter py) 
c: Intensity coefficient (parameter po) 
d: Laplace coefficient 
e: Phasecorrelation coefficient 
Table 1: Correlation Accuracy 
74 
\ E PY gf 
 
	        
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