CARTOSAT-1, launched in May 2005, is equipped with two cameras, Aft and Fore, tilted along-track by -5° and +26° respectively, allowing the acquisition of stereo data with a geometrical resolution of 2.5 m. The Institute “Area di Geodesia e Geomatica” at Sapienza Universita di Roma, Eurimage S.p.A. and the Institute of Geodesy and Photogrammetry, ETH Zurich participated in the ISPRS-ISRO Cartosat-1 Scientific Assessment Programme (C-SAP), in order to investigate the generation of Digital Surface Models (DSMs) from Cartosat-1 stereo scenes. This paper follows up on the previous work done by the Institutes and shows the analysis of a new standard stereopair belonging to the additional test field TS-Castelgandolfo, acquired on 18th July 2006 over the area of Castelgandolfo, Rome, Italy (30 x 30 km). The images are processed, in order to test both the image quality and the potential for DSM generation, following the procedures already established. The results obtained in all steps of the investigation, particularly those related to image quality, the orientation with different models and software and the effectiveness of image filtering for enhancing the DSM generation are presented and discussed.
[1]
Devrim Akca,et al.
Geometric and radiometric investigations of Cartosat-1 data
,
2007
.
[2]
Armin Gruen,et al.
DSM generation with ALOS/PRISM data using SAT-PP
,
2007,
2007 IEEE International Geoscience and Remote Sensing Symposium.
[3]
D. Poli,et al.
Modelling of spaceborne linear array sensors
,
2005
.
[4]
E. Baltsavias,et al.
DSM Generation and Interior Orientation Determination of IKONOS Images Using a Testfield in Switzerland
,
2005
.
[5]
Maria Antonia Brovelli,et al.
Accuracy assessment of high resolution satellite imagery orientation by leave-one-out method
,
2008
.
[6]
F. Volpe,et al.
CARTOSAT-1 Stereo Imagery: Potentialities about Orientation, DSM Extraction and Orthorectification
,
2007
.
[7]
A. Gruen,et al.
Least squares 3D surface and curve matching
,
2005
.