CIPA 2003 XIX th International Symposium, 30 September - 04 October, 2003, Antalya, Turkey 
618 
Image before geometric 
correction 
Image after geometric 
correction 
min value 
average value 
min value 
average value 
-0.29161 
0.409 
0.16964 
0.720 
Table 3. Difference of correlation coefficient (r) 
4. CONCLUSIONS 
The DSMs from digital photogrammetry and laser scanning 
was compared by overlapping them. To generate the 3D model 
of rock surface using Digital photogrammetry, effects of shadow 
and large parallax have to be decreased. It is possible to use the 
light with stable and strong intensity and direction, and decrease 
the large parallax at some part. Generated 3D model of stone 
monuments with natural rock slope is used for the conservation 
and restoration of cultural heritage. 
REFERENCES 
Slob, S., Hack, R., and Turner, A., 2002. An approach to 
automate discontinuity measurements of rock faces using laser 
scanning techniques, EUROCK 2002, Funchal, Madeira Island, 
Portugal, pp. 87-94. 
Baltsavias, E. P., Favey, E., Bauder, A., Bosch, H., and Pateraki, 
M., 2001. Digital Surface Modeling by Airborne Laser 
Scanning and Digital Photogrammetry for Glacier Monitoring, 
Photogrammetric Record, 17(98), pp. 243-273. 
Beraldin, J.-A., Blais, R., Rioux, M., Coumoyer, L., Laurin, D., 
and MacLean, S. G., 2000. Eye-safe digital 3-D sensing for 
space applications, Optical Engineering, 39(1), pp. 196-211. 
Milkhail, E., Bethel, J., and McGlone, J., 2001. Introduction 
to Modem Photogrammetry, John Wiley & Sons, New York, pp. 
90. 
ACKNOWLEDGEMENTS 
The authors wish to express their sincere thanks for the 
financial support by Korean Ministry of Science & Technology 
(Project No. : M1010500005301H020005500).