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without the use of GCPs has been evaluated, as well as studied 
the improvement of extracted DEMs quality by applying 
horizontal shift on reference DEMs from the available Global 
DEMs or other source DEMs. High quality DEM has been 
generated at 2 m grid spacing which will be of immense use for 
producing digital city model (DCMs). The accuracy of the DEM 
generated from multi-view images can be further improved with 
the use of high quality GCPs for modelling. Assessment of 
generated DEM with a reference including GCP modelling is 
the future scope of this study. 
REFERENCES 
Jacobsen, K., 2004. DEM generation from satellite data. In: 
Goossens, R. (Ed.): Remote Sensing in Transition, Proceedings 
of the 23rd EARSeL Symposium 2003, Ghent, Belgium, pp. 
513-525 
Baltsavias, E.P., 1999. A comparison between photogrammetry 
and laser scanning. ISPRS Journal of Photogrammetry & 
Remote Sensing, 54, pp. 83-94. 
Philip Cheng and Chuck Chaapel, 2006. DEM generation using 
QuickBird Stereo data without Ground Controls, 
GEOInformatics, pp 36-38. 
ACKNOWLEDGEMENT 
The authors are grateful to Dr. R. R. Navalgund, Director, 
Space Applications Centre, Ahmedabad for encouraging and 
allowing us to take up and complete this work. We extend our 
sincere thanks to Cartosat-2 project and to all the members of 
SPDCG for providing the best support and facilities at various 
phases of this work. Authors also wish to thank the internal 
reviewers for their critical comments.