Akademik Veri Yönetim Sistemi
Annual Conference of the American Society for Photogrammetry and Remote Sensing 2006: Prospecting for Geospatial Information Integration, ASPRS 2006, Reno, NV, Amerika Birleşik Devletleri, 1 - 05 Mayıs 2006, cilt.1, ss.197-204
In the Zonguldak test area IKONOS, QuickBird and OrbView-3 images are available. Their geometric quality has been analyzed and compared with different mathematical models in relation to precise ground control points allowing sub-pixel accuracy. The highest geometric precision was reached by bias corrected rational polynomial coefficients followed by geometric reconstruction. For 3D-affine transformation and especially the DLT method quite more and three-dimensional distributed control points are required. IKONOS scenes do have the best inner geometry, leading to the full accuracy just by shifting the scene after terrain relief correction. For the other images a higher degree of improvement is required. Because of not the same ground sample distance (GSD), a different imaging system of OrbView-3 and the required permanent change of the view direction during imaging of QuickBird and OrbView-3 it is not so easy to compare the information contents of the sensors just by the GSD. So the information contents were checked by mapping the same area. In addition the effective resolution was determined by edge analysis.