Orthorectification and Assessment of Quickbird Imagery Using D-gps Measurements over Paros Urban Area

The present paper focus on the rectification of QuickBird imagery (Standard PSM True Color image) in order to update the urban planning of Parikia (Paros island, Greece). Although the spatial resolution is sufficient for such application and the radiometric information is often better than the case of existing aerial photos, an accurate geometrical calibration is needed.The methods applied in this study are a linear polynomial correction using 3D GCPs, a RPC correction without refinement and RPC correction with linear refinement using 3D GCPs. The ground control points (GCPs) were collected by means of GPS differential observations (D-GPS). Investigation of the results was performed by examining the RMS error of three additional GPS points for each of the above methods. * Corresponding author: [email protected]