Dynamic multi-stream graph neural networks for efficient interactive action recognition
摘要
Interactive action recognition aims to automatically recognize and understand behaviors involving interactions between humans and objects. In this paper, we propose a multi-stream graph neural network approach that efficiently recognizes interactive actions from skeletal motion sequences. Our method consists of three targeted deep neural networks: the Priori Interaction Graph Convolutional Network (PI-GCN), the Dynamic Interaction Hypergraph Convolutional Network (DIH-GCN), and the Global Interaction Attention (GI-Attention). PI-GCN improves feature aggregation by incorporating potential interactions into the skeletal adjacency matrix. DIH-GCN dynamically constructs hypergraphs using the K-nearest neighbor algorithm to capture local interaction features. GI-Attention integrates attention computation across spatial and temporal dimensions to capture global interaction features. Experiments on the NTU-RGB+D 120 interaction dataset demonstrate the superiority of our model, achieving state-of-the-art performance. Our work highlights the importance of modeling dynamic interaction information for effective interactive action recognition. The source code is accessible via https://github.com/HENRYDJ520/DM-GCN.