Title :
DEM generation from new VIR sensors: IKONOS, ASTER and Landsat-7
Author_Institution :
Canada Centre for Remote Sensing, Ottawa, Ont.
Abstract :
DEM generation is a living R&D topic since new-launched satellite images can be used to generate stereoscopic images. Using a coplanarity equation model developed at CCRS and an automatic matching method developed at PCI, DEMs are generated with new VIR stereo data. Accuracy of 4.9 m with high-resolution IKONOS images, and 33 m and 101 m with medium-resolution ASTER and Landsat-7 ETM+ images respectively are obtained. The same matching accuracy of one-pixel is translated into worse results with Landsat due to a small B/H ratio of 0.15
Keywords :
geophysical signal processing; image matching; stereo image processing; terrain mapping; topography (Earth); ASTER images; DEM generation; IKONOS images; Landsat-7 ETM+ images; automatic matching method; coplanarity equation model; stereoscopic images;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.976698
