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- W3041918685 abstract "Current state-of-the-art human action recognitionAction recognition is focused on the classification of temporally trimmed videos in which only one action occurs per frame. In this work we address the problem of action localisationAction localisation and instance segmentation in which multiple concurrent actions of the same class may be segmented out of an image sequence. We cast the action tubeAction tube extraction as an energy maximisation problem in which configurations of region proposalsRegion proposals in each frame are assigned a cost and the best action tubesAction tube are selected via two passes of dynamic programming. One pass associates region proposalsRegion proposals in space and time for each action categoryAction categories, and another pass is used to solve for the tube’s temporal extent and to enforce a smooth label sequence through the video. In addition, by taking advantage of recent work on action foreground-background segmentation, we are able to associate each tube with class-specific segmentations. We demonstrate the performance of our algorithm on the challenging LIRIS-HARL dataset and achieve a new state-of-the-art result which is 14.3 times better than previous methods." @default.
- W3041918685 created "2020-07-16" @default.
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- W3041918685 date "2020-01-01" @default.
- W3041918685 modified "2023-10-18" @default.
- W3041918685 title "Spatio-Temporal Action Instance Segmentation and Localisation" @default.
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- W3041918685 doi "https://doi.org/10.1007/978-3-030-46732-6_8" @default.
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