Principal warps: thin-plate splines and the decomposition of deformations
Fred L. Bookstein · IEEE Transactions on Pattern Analysis and Machine Intelligence · 1989
The decomposition of deformations by principal warps is demonstrated. The method is extended to deal with curving edges between landmarks. This formulation is related to other applications of splines current in computer vision. How they might aid in the extraction of features for analysis, comparison, and diagnosis of biological and medical images in indicated.>