The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Publications Copernicus
Articles | Volume XL-5/W6
18 May 2015
 | 18 May 2015


S. A. Brianskiy, S. V. Sidyakin, and Y. V. Vizilter

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.