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A Robust Block-Based Image/Video Registration Approach for Mobile Imaging Devices

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3 Author(s)
Battiato, S. ; Dept. of Math. & Comput. Sci., Catania Univ., Catania, Italy ; Bruna, A.R. ; Puglisi, G.

Digital video stabilization enables to acquire video sequences without disturbing jerkiness by compensating unwanted camera movements. In this paper, we propose a novel fast image registration algorithm based on block matching. Unreliable motion vectors (i.e., not related with jitter movements) are properly filtered out by making use of ad-hoc rules taking into account local similarity, local “activity,” and matching effectiveness. Moreover, a temporal analysis of the relative error computed at each frame has been performed. Reliable information is then used to retrieve inter-frame transformation parameters. Experiments on real cases confirm the effectiveness of the proposed approach even in critical conditions.

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Multimedia, IEEE Transactions on  (Volume:12 ,  Issue: 7 )