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• W3048698525 abstract "The objective of action quality assessment is to score sports videos. However, most existing works focus only on video dynamic information (i.e., motion information) but ignore the specific postures that an athlete is performing in a video, which is important for action assessment in long videos. In this work, we present a novel hybrid dynAmic-static Context-aware attenTION NETwork (ACTION-NET) for action assessment in long videos. To learn more discriminative representations for videos, we not only learn the video dynamic information but also focus on the static postures of the detected athletes in specific frames, which represent the action quality at certain moments, along with the help of the proposed hybrid dynamic-static architecture. Moreover, we leverage a context-aware attention module consisting of a temporal instance-wise graph convolutional network unit and an attention unit for both streams to extract more robust stream features, where the former is for exploring the relations between instances and the latter for assigning a proper weight to each instance. Finally, we combine the features of the two streams to regress the final video score, supervised by ground-truth scores given by experts. Additionally, we have collected and annotated the new Rhythmic Gymnastics dataset, which contains videos of four different types of gymnastics routines, for evaluation of action quality assessment in long videos. Extensive experimental results validate the efficacy of our proposed method, which outperforms related approaches. The codes and dataset are available at url{https://github.com/lingan1996/ACTION-NET}." @default.
• W3048698525 created "2020-08-18" @default.
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• W3048698525 date "2020-08-13" @default.
• W3048698525 modified "2023-09-22" @default.
• W3048698525 title "Hybrid Dynamic-static Context-aware Attention Network for Action Assessment in Long Videos" @default.
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• W3048698525 doi "https://doi.org/10.48550/arxiv.2008.05977" @default.
• W3048698525 hasPublicationYear "2020" @default.
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