The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part Bl. Beijing 2008 
1300 
and with rather low sun elevations the normal problems of too 
steep slopes and large shadow areas without enough matching 
argets lead to local artefacts in the DSM generated from 2-fold 
stereo imagery with the software described here. 
Figure 4: Differences from DSM derived from CARTOSAT 
stereo pair and laser DTM from Bavarian Survey larger than 10 
m are marked in black - a good correlation with forest areas in 
the orthoimage (figure 5) shows up 
Figure 5: Orthoimage of Taching area from Bavarian Survey as 
a source for GCP (2 m sampling) 
ACKNOWLEDGEMENTS 
The big effort by ISRO/SAC of offering a CARTOSAT-1 
Scientific Assessment Program to the ISPRS community is 
much appreciated. Acknowledgements also go to the JRC 
scientists for the preparation of valuable ground truth for test 
site 5 and to the Institut Cartographic de Catalunya for the 
delivery of adequate ground truth for test site 10. 
REFERENCES 
Grodecki, J., Dial, G., Lutes, J., 2004: Mathematical Model for 
3D feature extraction from multiple satellite images described 
by RPCs, ASPRS Annual Conf. Proc., Denver, Colorado, USA 
Heipke, C., Komus, W., Pfannenstein, A., 1996: The evaluation 
of MEOSS airborne 3-line scanner imagery - processing chain 
and results, Photogrammetric Engineering and Remote Sensing, 
Vol. 62, No. 3, pp. 293-299 
Hoja, D., Reinartz, P., Lehner, M., 2005: DSM Generation from 
High Resolution Satellite Imagery Using Additional 
Information Contained in Existing DSM, Proc. of the ISPRS 
Workshop 2005 High Resolution Imaging for Geospatial 
Information, Hanover, Germany 
Komus W., Lehner M., Schroeder, M., 2000: Geometric inflight 
calibration by block adjustment using MOMS-2P 3-line- 
imagery of three intersecting stereo-strips, SFPT (Société 
Française de Photogrammétrie et Télédétection) , Bulletin Nr. 
159, pp. 42-54 
Krauss T., Lehner M., Reinartz P., Stilla U., 2006: Comparison 
of DSM Generation Methods on IKONOS Images, 
Photogrammetrie-Femerkundung-Geoinformation Nr. 4, pp. 
303-314 
Lehner M., Gill, R.S., 1992: Semi-Automatic Derivation of 
Digital Elevation Models from Stereoscopic 3-Line Scanner 
Data, IAPRS, Vol. 29, part B4, Commission IV, pp. 68-75, 
Washington, USA 
Lehner, M., Müller, Rupert, Reinartz, P., 2005: DSM and 
Orthoimages from QuickBird and Ikonos Data Using Rational 
Polynomial Functions, Proc. of High Resolution Earth Imaging 
for Geospatial Information, May 17-20, Hanover, Germany 
Lehner, M., Müller, Rupert, Reinartz, P., 2006: Stereo 
Evaluation of CARTOSAT-1 Data on Test Site 5 - First DLR 
Results, Proc. of ISPRS-TC IV Symposium, Sept. 27-30, Goa, 
India 
Lehner, M., Müller, Rupert, Reinartz, P., Schroeder, M., 2007: 
Stereo evaluation of Cartosat-1 data for French and Catalonian 
test sites, Proc. of the ISPRS Workshop 2007 High Resolution 
Earth Imaging for Geospatial Information, Hanover, Germany, 
May 29 - June 1 
Reinartz, P., Müller, Rupert, Lehner, M., Schroeder, M., 2006: 
Accuracy Analysis for DSM and orthoimages derived from 
SPOT HRS stereo data using direct georeferencing, ISPRS 
Journal of Photogrammetry & Remote Sensing 60, pp. 160-169 
Seige, P., Reinartz, P., Schroeder, M., 1998: The MOMS-2P 
mission on the MIR station, IAPRS, Vol. 32, Part 1, pp. 204-210, 
Bangalore, India (see also http://www.nz.dlr.de/moms2p) 
Srivastava P.K., Srinivasan T.P., Gupta Amit, Singh Sanjay, 
Nain J.S., Amitabh, Prakash S., Kartikeyan B., Gopala Krishna 
B., 2007: Recent Advances in CARTOSAT-1 Data Processing, 
Proc. of the ISPRS Workshop on High Resolution Earth 
Imaging for Geospatial Information, Hanover, Germany, May 
29 - June 1