Computer Science – Computer Vision and Pattern Recognition
Scientific paper
2010-08-03
Computer Science
Computer Vision and Pattern Recognition
submitted to Special Issue on High Performance Computation on Hardware Accelerators, the Computer Journal
Scientific paper
Automatic video segmentation plays an important role in a wide range of computer vision and image processing applications. Recently, various methods have been proposed for this purpose. The problem is that most of these methods are far from real-time processing even for low-resolution videos due to the complex procedures. To this end, we propose a new and quite fast method for automatic video segmentation with the help of 1) efficient optimization of Markov random fields with polynomial time of number of pixels by introducing graph cuts, 2) automatic, computationally efficient but stable derivation of segmentation priors using visual saliency and sequential update mechanism, and 3) an implementation strategy in the principle of stream processing with graphics processor units (GPUs). Test results indicates that our method extracts appropriate regions from videos as precisely as and much faster than previous semi-automatic methods even though any supervisions have not been incorporated.
Fukuchi Ken
Kazuma Akamine
Kimura Akisato
Takagi Shigeru
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