arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1909.13245cs.CV
收藏

时空协同注意循环神经网络在人体-骨骼运动预测中的应用

Spatiotemporal Co-attention Recurrent Neural Networks for Human-Skeleton Motion Prediction

Nanjing University of Science and Technology(南京理工大学);Nanjing University of Aeronautics and Astronautics(南京航空航天大学);Huawei Cloud(华为云);Tencent AI Lab(腾讯人工智能实验室)

Xiangbo Shu, Liyan Zhang, Guo-Jun Qi, Wei Liu, Jinhui Tang

摘要:

人体运动预测的目的是根据观察到的人体运动生成未来的运动。由于循环神经网络(RNN)在序列数据建模方面取得了成功,最近的研究利用RNN对观察到的运动序列进行人体骨骼运动建模,并预测未来的人体运动。然而,这些方法没有考虑关节间的空间一致性和骨骼间的时间演化,而这恰恰反映了人体运动在时空空间中的重要特征。为此,我们提出了一种新的关节协同注意循环神经网络(SC-RNN),以捕捉关节之间的空间一致性,和骨骼之间的时间演化,同时在一个关节协同注意特征映射在时空空间。首先,构造一个双关节特征图作为所观察到的运动序列的表示。其次,我们设计了一个新的非线性联合共同注意力(SCA)机制,动态学习这个非线性联合特征映射的非线性联合共同注意力特征映射,它可以细化有用的观察到的运动信息来预测一个未来的运动。第三,GRU的一个变体嵌入SCA协同建模的人体骨骼运动和人体关节运动的时空空间,把人体关节的共同注意力特征映射作为运动上下文。人体运动预测的实验结果表明,该方法优于相关方法。

英文摘要:

Human motion prediction aims to generate future motions based on the observed human motions. Witnessing the success of Recurrent Neural Networks (RNN) in modeling the sequential data, recent works utilize RNN to model human-skeleton motion on the observed motion sequence and predict future human motions. However, these methods did not consider the existence of the spatial coherence among joints and the temporal evolution among skeletons, which reflects the crucial characteristics of human motion in spatiotemporal space. To this end, we propose a novel Skeleton-joint Co-attention Recurrent Neural Networks (SC-RNN) to capture the spatial coherence among joints, and the temporal evolution among skeletons simultaneously on a skeleton-joint co-attention feature map in spatiotemporal space. First, a skeleton-joint feature map is constructed as the representation of the observed motion sequence. Second, we design a new Skeleton-joint Co-Attention (SCA) mechanism to dynamically learn a skeleton-joint co-attention feature map of this skeleton-joint feature map, which can refine the useful observed motion information to predict one future motion. Third, a variant of GRU embedded with SCA collaboratively models the human-skeleton motion and human-joint motion in spatiotemporal space by regarding the skeleton-joint co-attention feature map as the motion context. Experimental results on human motion prediction demonstrate the proposed method outperforms the related methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑