“…It has been applied to many different types of measurement and feature extraction problems due to its high level of flexibility and its powerful mathematical model: Adaptive Least Squares Image Matching (Gruen, 1984(Gruen, , 1985a, Geometrically Constrained Multiphoto Matching (Gruen and Baltsavias, 1988), Image Edge Matching (Gruen and Stallmann, 1991), Multiple Patch Matching with 2D images (Gruen, 1985b), Multiple Cuboid (voxel) Matching with 3D images (Maas, 1994;Maas and Gruen, 1995), Globally Enforced Least Squares Template Matching (Gruen and Agouris, 1994), Least Squares B-spline (LSB) Snakes (Gruen and Li, 1996). For a detailed survey the authors refer to Gruen (1996).…”