Bands 1 - 7: Geo-referencing of the imagery was performed using PCI OrthoEngine module. The NITF IKONOS imagery were orthorectified using the Rational Functions extracted from the NITF, then further supplemented with stereo ground control point positioning using a robust polynomial math model through bundle adjustment of all the satellite scenes.
IKONOS Imagery was obtained from Space Imaging LLC, 12076 Grant Street, Thornton, Colorado 80241