Robust real-time segmentation of images and videos using a smooth-spline snake-based algorithm

Authors:
F. Precioso;M. Barlaud;T. Blu;M. Unser
Affiliations:
Lab. CNRS, Univ. de Nice, Sophia-Antipolis, France;-;-;-
Venue:
IEEE Transactions on Image Processing
Year:
2005

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Abstract

This paper deals with fast image and video segmentation using active contours. Region-based active contours using level sets are powerful techniques for video segmentation, but they suffer from large computational cost. A parametric active contour method based on B-Spline interpolation has been proposed in to highly reduce the computational cost, but this method is sensitive to noise. Here, we choose to relax the rigid interpolation constraint in order to robustify our method in the presence of noise: by using smoothing splines, we trade a tunable amount of interpolation error for a smoother spline curve. We show by experiments on natural sequences that this new flexibility yields segmentation results of higher quality at no additional computational cost. Hence, real-time processing for moving objects segmentation is preserved.