Use of medial axis transforms for computing normals at boundary points

Authors:
J. Mukherjee;M. Aswatha Kumar;P. P. Das;B. N. Chatterji
Affiliations:
Department of Computer Science and Engineering, Indian Institute of Technology, Kharagpur 721 302, India;Department of Electronics and Communication Engineering, BDT College of Engineering, Dawangere 577 002 Karnataka, India and Department of Computer Science and Engineering, J.N.N. College of Engine ...;Department of Computer Science and Engineering, Indian Institute of Technology, Kharagpur 721 302, India and EDA Soft (India) Pvt. Ltd., Kolkata 700091, India.;Department of Electronics and ECE, I.I.T, Kharagpur 721 302, India
Venue:
Pattern Recognition Letters
Year:
2002

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Abstract

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.