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VLSI Design
Volume 2008 (2008), Article ID 892370, 12 pages
http://dx.doi.org/10.1155/2008/892370
Research Article

A Time-Consistent Video Segmentation Algorithm Designed for Real-Time Implementation

1NXP Semiconductors, 2 Rue de la Girafe, B.P. 5120, 14079 Caen, Cedex 5, France
2Laboratoire GREYC, 6 Boulevard du Maréchal Juin, 14050 Caen, France
3NXP Semiconductors, High Tech Campus 60, 5656 AE Eindhoven, The Netherlands

Received 30 April 2007; Revised 13 November 2007; Accepted 17 January 2008

Academic Editor: Jean-Baptiste Begueret

Copyright © 2008 M. El Hassani et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We propose a time-consistent video segmentation algorithm designed for real-time implementation. Our algorithm is based on a region merging process that combines both spatial and motion information. The spatial segmentation takes benefit of an adaptive decision rule and a specific order of merging. Our method has proven to be efficient for the segmentation of natural images with few parameters to be set. Temporal consistency of the segmentation is ensured by incorporating motion information through the use of an improved change-detection mask. This mask is designed using both illumination differences between frames and region segmentation of the previous frame. By considering both pixel and region levels, we obtain a particularly efficient algorithm at a low computational cost, allowing its implementation in real-time on the TriMedia processor for CIF image sequences.