Shape characterization of particles via generalized Fourier analysis
Tamás Réti, Imre Czinege · Journal of Microscopy · 1989
SUMMARY A general method for shape characterization of two‐dimensional (2‐D) microscopical particles is presented. The proposed procedure based on Fourier analysis techniques can be regarded as a generalization and further development of methods described in the literature. The geometry of the particles is characterized by a set of shape functions which is invariant under translation, rotation and dilation. Shape descriptors generated from the Fourier coefficients are used for shape evaluation. Similarity between particles has been evaluated using an appropriately defined distance measure. The method is demonstrated by an application using a collection of 2‐D objects.