Slice Matching for Accurate Spatio-Temporal Alignment

Abstract : Video synchronization and alignment is a rather recent topic in computer vision. It usually deals with the problem of aligning sequences recorded simultaneously by static, jointly- or independently-moving cameras. In this paper, we investigate the more difficult problem of matching videos captured at different times from independently-moving cameras, whose trajectories are approximately co-incident or parallel. To this end, we propose a novel method that pixel-wise aligns videos and allows thus to automatically highlight their differences. This primarily aims at visual surveillance but the method can be adopted as is by other related video applications, like object transfer (augmented reality) or high dynamic range video. We build upon a slice matching scheme to first synchronize the sequences, while we develop a spatio-temporal alignment scheme to spatially register corresponding frames and re- fine the temporal mapping. We investigate the performance of the proposed method on videos recorded from vehicles driven along different types of roads and compare with related previous works.
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Communication dans un congrès
ICCVW - Workshops of International Conference on Computer Vision - 2011, Nov 2011, Barcelona, Spain. IEEE, pp.1941-1946, 2011, 〈10.1109/ICCVW.2011.6130486〉
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Georgios Evangelidis, Ferran Diego, Joan Serrat, Antonio López. Slice Matching for Accurate Spatio-Temporal Alignment. ICCVW - Workshops of International Conference on Computer Vision - 2011, Nov 2011, Barcelona, Spain. IEEE, pp.1941-1946, 2011, 〈10.1109/ICCVW.2011.6130486〉. 〈hal-00936021〉

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