B-Spline Active Contour with Handling of Topology Changes for Fast Video Segmentation

• Main Authors: Frederic Precioso, Michel Barlaud
• Format: Article
• Language: English
• Published: SpringerOpen 2002-06-01
• Series: EURASIP Journal on Advances in Signal Processing
• Subjects: video segmentation; region-based active contour; parametric active contour; B-spline; interpolation.
• Online Access: http://dx.doi.org/10.1155/S1110865702203121

This paper deals with video segmentation for MPEG-4 and MPEG-7 applications. Region-based active contour is a powerful technique for segmentation. However most of these methods are implemented using level sets. Although level-set methods provide accurate segmentation, they suffer from large computational cost. We propose to use a regular B-spline parametric method to provide a fast and accurate segmentation. Our B-spline interpolation is based on a fixed number of points 2j depending on the level of the desired details. Through this spatial multiresolution approach, the computational cost of the segmentation is reduced. We introduce a length penalty. This results in improving both smoothness and accuracy. Then we show some experiments on real-video sequences.