ORIENTATION SPECTRUM ALGORITHM DEVELOPMENT
- The Federal State Unitary Enterprise ”State Research Institute of Aviation System”, Russia, Moscow
Keywords: Shape Analysis, Mathematical Morphology, Maragos Pattern Spectra, Continuous Skeletons, Disc Structuring Element, Orientation Spectrum
Abstract. A morphological orientation spectra is proposed. This spectrum describes basic directions of shape parts. Fast discrete-continuous algorithm for computing orientation spectrum is presented. It is based on usage of continuous skeleton that is constructed from polygonal shape contour. A definition for disc orientation map is given. Comparison experiments for binary shapes with the usage of orientation spectra are carried out. Cyclic shift and EMD-L1 distance are used for spectra comparison. The obtained results indicate that the aggregation of the thickness spectra with orientation spectra increases the quality of inter-class recognition.