Shot boundary detection using Zernike moments in multi-GPU multi-CPU architectures
Journal of Parallel and Distributed Computing
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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 the 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. Test results indicate that our method extracts appropriate regions from videos as precisely as and much faster than previous semi-automatic methods even though no supervisions have been incorporated.