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Shallow Graph Convolutional Network for Skeleton-Based Action Recognition
DOI:10.3390/s21020452.png)
摘要
En 中文
Graph convolutional networks (GCNs) have brought considerable improvement to the skeleton-based action recognition task. Existing GCN-based methods usually use the fixed spatial graph size among all the layers. It severely affects the model's abilities to exploit the global and semantic discriminative information due to the limits of receptive fields. Furthermore, the fixed graph size would cause many redundancies in the representation of actions, which is inefficient for the model. The redundancies could also hinder the model from focusing on beneficial features. To address those issues, we proposed a plug-and-play channel adaptive merging module (CAMM) specific for the human skeleton graph, which can merge the vertices from the same part of the skeleton graph adaptively and efficiently. The merge weights are different across the channels, so every channel has its flexibility to integrate the joints. Then, we build a novel shallow graph convolutional network (SGCN) based on the module, which achieves state-of-the-art performance with less computational cost. Experimental results on NTU-RGB+D and Kinetics-Skeleton illustrates the superiority of our methods.
Keyword:
activity recognition
graph convolution network
skeleton sequence
AI总结
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期刊
IF:
3.5
论文数:
7.2W
被引数:
20.9W
机构
引用论文
Enhanced skeleton visualization for view invariant human action recognition用于视图不变人体动作识别的增强骨架可视化
PATTERN RECOGNITION
IF7.6

