ORTHORECTIFICATION AND DEM GENERATION FROM HIGH RESOLUTION SATELLITE DATA

The latest additions of IKONOS and EROS-A1 data have created a big impact to the remote sensing industry. Instead of using aerial photos, highly detailed maps of entire city and country can be frequently and easily updated using this data. Different methods can be used to correct the satellite data. In this paper, IKONOS and EROS-A1 data were obtained for the same area. Furthermore, a IKONOS stereo pair was acquired on an other study site. A rigorous model developed at Canada Centre for Remote Sensing (CCRS) was used for the geometric correction and the DEM generation. The results are accurate when compared with the orthophotos, which enables the data to be integrated into a lot of applications. DEM errors of 2-5 meter was obtained depending of the land covers.