Table 2 Experiment result 
  
B t of 
cn [- ;feteent.ol PSNR 
unsuc . point 
Percent of |Az | z0. 1 
Percent of |Ay | x0. 1 
  
  
  
  
  
  
  
  
2 1% 40. 03 99% 99% 
4 17294 37. 82 9894 9894 
6 3.1% 35. 86 92% 92% 
8 6.4% 31.92 84% 84% 
  
  
  
( * );Unsuceess. 
Notes : 
1. In matching process, total number is 10000, 
searching window size is 15X15, iterate munber is 
5. 
2. "Unsuccess" means that the point is disa- 
pear, or the distortion of nearby region of this 
point is very great. 
3. Tolerable linited error ó,,ó, can be defined 
by user (In table 1 and table 2, &,=6,=0. 1 pixel). 
4. PSNR (Peak Signal —to — Noise Ratio) is 
defined : 
255 X 255 
PSNR = 10 X logl0 MSE ^" 
N 
5,J 
  
for pixel grey value in original Image and decom- 
pressed image , respectively. 
References 
Zhizhuo, W. , 1990. Princiople of photogramme- 
tery with Remote Sensing, Surveying &. Mapping , 
Beijing, PP. 452— 458. 
Wallace, G. K., 1991. The JPEG Still Picture 
Compression standand, Commun. , ACM, 3(4), 
PP. 30— 44. 
Mallat, S. G. , 1989. A Theory for Multiresolution 
Signal Decomposition: The Wavelet Representa- 
tion. IEEE. ASSP, 11(7), PP. 674— 693. 
162 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B1. Vienna 1996 
  
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