Quickbird stereo-photogrammetry for geological mapping (Cyrene-Lybia)

QuickBird satellite image stereo-interpretation together with geological survey allowed the creation of geological and geomorphological map at the scale of 1:10,000 of the Shahhat area (the old Cyrene, Libya). Before interpretation, the satellite image underwent fusion between panchromatic and multispectral data; the orthorectification has been performed by using the Rational Polynomial Coefficients together with the GCPs from DGPS measurements and the DEM which has been created from the topographic map at the scale of 1:50,000. From the QuickBird orthorectified image, a synthetic stereo scene was created by the introduction of an artificial parallax giving a different relative shift in proportion of the terrain height. The geological and geomorphological maps have been created by the restitution of the stereopair that has been oriented in digital photogrammetry.