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Action Recognition with Multiple Relative Descriptors of Trajectories
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Journal Article
Action Recognition with Multiple Relative Descriptors of Trajectories
2020
Overview
Dense trajectory has become one of the most successful hand-crafted features for action recognition. However, most of the existing dense trajectories based methods ignore the relationship between trajectories. In this paper, we propose multiple relative descriptors of trajectories to model the relative information of pairs of trajectories. Specifically, we present relative motion descriptors and relative location descriptors, which are utilized to capture the relative motion information and relative location information respectively. Moreover, we present relative deep feature descriptors which combine the deep features with hand-crafted features. By aggregating the above descriptors, we obtain the fixed-length representation regardless of the various duration of input video. The experimental results on three standard datasets demonstrate the superiority of our method.
Publisher
Springer US,Springer Nature B.V
