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Singularities and regularities on line pictures via symmetrical trapezoids

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2 Author(s)
Rocha, J. ; Univ. of the Balearic Islands, Palma de Mallorca, Spain ; Bernardino, R.

An algorithm that decomposes a line image into singular and regular regions is presented. We define a contour trapezoid as the building block of regular regions, and postulate a maximal trapezoid set as the core of regular regions. Then, we describe an algorithm that calculates a maximal trapezoid set of a polygon and show how to use it to find a skeleton of a polygonal approximation of a contour. Experiments are explained to show the behavior of the new concept on real images as compared to previous algorithms

Published in:

Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:20 ,  Issue: 4 )

Date of Publication:

Apr 1998

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