SS 
Fig. 7 Parallax contours 
2. CONCLUSIONS 
Though only a few of criterions have been discussed in this 
paper, it has been proved that even if some criterions are 
imperfect individually, properly combination of them may for- 
med a strong algorithm. A main advantage of the multi-crite- 
rion is detecting gross errors by itself. Of course not all 
of grorr errors can be removed by such scheme,the other me- 
thods and post processing are still necessary. However detec- 
ting a certain percent of gross errors during matching pro- 
Cedure, it enhances the reliability and saves the computation 
time, 
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/1/ Ackermann F.: High Precision Digital Image Correlation, 
IPS Heft 9, Stuttgart 1984 
/2/ Dowman I. & Haggag, A.: Digital Image Correlation Along 
Epipolar Lines, Proceeding on image processing,Graz, 1977. 
/3/ F&rstner, W.: Quality Assessment of Object Location and 
Point Transfer using Digital Image Correlation Techniques, 
jets Arch. of photogrammetry,Vol. 25-A2a,Rio de Janeiro, 
1984. 
/4/ Helava, U. V.: Digital Correlation in Photogrammetric Ins- 
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/5/ Lin Zongjian: An Experiment for Digital Image Correlatin 
in Photogrammetry, Journal of UTUSM, 1982-1. : 
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