Robust boundary delineation using random-phase-shift active contours

Authors:
Astrit Rexhepi;Farzin Mokhtarian
Affiliations:
Centre for Vision, Speech, and Signal Processing, School of Electronics and Physical Sciences, University of Surrey, Guildford, United Kingdom;Centre for Vision, Speech, and Signal Processing, School of Electronics and Physical Sciences, University of Surrey, Guildford, United Kingdom
Venue:
SCIA'07 Proceedings of the 15th Scandinavian conference on Image analysis
Year:
2007

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Abstract

When an active contour is applied to a noisy image, the contour is sometimes attracted to a local energy minimum, since the noise gives rise to high rates of change of the image gray levels. In this paper we will describe a novel method of overcoming this problem by using a sparse set of points to represent the active contour C and randomly varying the positions of these points.