Use of medial axis transforms for computing normals at boundary points

• Published in: Pattern recognition letters Vol. 23; no. 14; pp. 1649 - 1656
• Main Authors: Mukherjee, J., Aswatha Kumar, M., Das, P.P., Chatterji, B.N.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-12-2002
• Subjects: Medial axis transform; Medial disks; Normals of digital curves; Octagonal distance; Octagonal distance; Medial axis transform; Normals of digital curves; Medial disks
• ISSN: 0167-8655; 1872-7344
• DOI: 10.1016/S0167-8655(02)00128-9

Medial axis transform (MAT) is well known for object representation. It is interesting to explore its use in different kinds of computations. In this paper an algorithm has been proposed for computation of normals at the boundaries of two-dimensional objects based on their MATs. In this technique, there is no requirement of linking boundary points during the computation compared to other existing techniques. The added advantage in the computation is that the computation can be restricted purely in the integer domain.