Abstract

This paper presents an algorithm for discriminating the skeletons ~central lines! of objects on digital images. The skeleton is discriminated in the process of tracing the geometrical center of the digital object. The global tracing direction of the skeleton is determined by the orientation of the chord of maximum length that passes through the current point, while the exact position is corrected by displacing the points of the chord in accordance with the local maximum of the distance transformation. Examples are given of using the algorithm presented here to discriminate the centers of interference fringes on the images of interferograms.

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