A new technique is presented for identification of thin objects whose appearance in an image is altered by contour noise, partial occlusions and distortions induced by 3-D flexible deformations. Starting from polygonal approximations of the shape to be analysed and of the object prototypes, the technique is based on an iterative deformation of each prototype which aims at reducing its dissimilarity with the shape under consideretion. Identification is then decided in favor of the most similar deformed prototype.
"Flexible Matching Algorithm For 2-D Polygonal Shapes", Proc. SPIE 0804, Advances in Image Processing, (14 October 1987); doi: 10.1117/12.941292; https://doi.org/10.1117/12.941292