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- W2893703358 abstract "As increasing attention is paid to human action recognition from skeleton data, this paper focuses on such tasks by proposing a hierarchical model to discover the structure information of body-parts involved in actions for better analysis of human actions in the skeleton data. Considering human actions as simultaneous motions of body-parts of the human skeleton, we propose a hierarchical model to simultaneously apply discriminative body-parts selection at a same scale and group coupling of bundles of body-parts at different scales, while we decompose the human skeleton into a hierarchy of body-parts of varying scales. To represent such hierarchy of body-parts, we accordingly build a hierarchical rotation and relative velocity (HRRV) descriptor. The hierarchical representations encoded by Fisher vectors of the HRRV descriptors are properly formulated into the hierarchical model via the proposed mixed norm, to apply the sparse selection of body-parts and regularize the structure of such hierarchy of body-parts. The extensive evaluations on three challenging datasets demonstrate the effectiveness of our proposed approach, which achieves superior performance compared to the state-of-the-art algorithms on datasets with various sizes, showing it is more widely applicable than existing approaches." @default.
- W2893703358 created "2018-10-05" @default.
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- W2893703358 date "2019-10-01" @default.
- W2893703358 modified "2023-10-14" @default.
- W2893703358 title "A Hierarchical Model for Human Action Recognition From Body-Parts" @default.
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- W2893703358 doi "https://doi.org/10.1109/tcsvt.2018.2871660" @default.
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