oa Automated gravity terrain corrections using satellite stereo-pairs

By using SPOT stereo-pairs it is possible to automate the extraction of conjugate pairs of (matched) image co-ordinates. Propagation of these data through an appropriate sensor model, constrained by at least three ground control points, produces irregularly distributed height estimates which provide the basis of two elevation models. The first is a DEM of orthogonal grid points which is generated by Kriging.