History Repeats Itself: Human Motion Prediction via Motion Attention

Wei Mao; Miaomiao Liu; Mathieu Salzmann

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arXiv · 2007.11755

History Repeats Itself: Human Motion Prediction via Motion Attention

Wei Mao·Miaomiao Liu·Mathieu Salzmann

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Abstract

Human motion prediction aims to forecast future human poses given a past motion. Whether based on recurrent or feed-forward neural networks, existing methods fail to model the observation that human motion tends to repeat itself, even for complex sports actions and cooking activities. Here, we introduce an attention-based feed-forward network that explicitly leverages this observation. In particular, instead of modeling frame-wise attention via pose similarity, we propose to extract motion attention to capture the similarity between the current motion context and the historical motion sub-sequences. Aggregating the relevant past motions and processing the result with a graph convolutional network allows us to effectively exploit motion patterns from the long-term history to predict the future poses. Our experiments on Human3.6M, AMASS and 3DPW evidence the benefits of our approach for both periodical and non-periodical actions. Thanks to our attention model, it yields state-of-the-art results on all three datasets. Our code is available at https://github.com/wei-mao-2019/HisRepItself.

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Wei Mao, Miaomiao Liu, Mathieu Salzmann. 2020-07-23. History Repeats Itself: Human Motion Prediction via Motion Attention. https://arxiv.org/abs/2007.11755

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