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Towards a hierarchical contour description via dominant point detection

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3 Author(s)
A. Held ; Graduate Sch. of Electron. Sci. & Technol., Shizuoka Univ., Hamamatsu, Japan ; K. Abe ; C. Arcelli

An algorithm for the detection of dominant points and for building a hierarchical approximation of a digital curve is proposed. The algorithm does not require any parameter tuning and is shown to perform well for a wide variety of shapes, including scaled and rotated ones. Dominant points are first located by a coarse-to-fine detector scheme. They constitute the vertices of a polygon closely approximating the curve. Then, a criterion of perceptual significance is used to repeatedly remove suitable vertices until a stable polygonal configuration, the contour sketch, is reached. A highly compressed hierarchical description of the shape also becomes available

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IEEE Transactions on Systems, Man, and Cybernetics  (Volume:24 ,  Issue: 6 )