Title
StNet: Local and Global Spatial-Temporal Modeling for Action Recognition
Abstract
Despite the success of deep learning for static image understanding, it remains unclear what are the most effective network architectures for spatial-temporal modeling in videos. In this paper, in contrast to the existing CNN+RNN or pure 3D convolution based approaches, we explore a novel spatial-temporal network (StNet) architecture for both local and global modeling in videos. Particularly, StNet stacks N successive video frames into a super-image which has 3N channels and applies 2D convolution on super-images to capture local spatial-temporal relationship. To model global spatial-temporal structure, we apply temporal convolution on the local spatial-temporal feature maps. Specifically, a novel temporal Xception block is proposed in StNet, which employs a separate channel-wise and temporal-wise convolution over the feature sequence of a video. Extensive experiments on the Kinetics dataset demonstrate that our framework outperforms several state-of-the-art approaches in action recognition and can strike a satisfying trade-off between recognition accuracy and model complexity. We further demonstrate the generalization performance of the leaned video representations on the UCF101 dataset.
Year
Venue
Field
2018
national conference on artificial intelligence
Architecture,Pattern recognition,Convolution,Computer science,Action recognition,Network architecture,Communication channel,Artificial intelligence,Temporal modeling,Deep learning,Model complexity
DocType
Volume
Citations 
Journal
abs/1811.01549
2
PageRank 
References 
Authors
0.37
16
8
Name
Order
Citations
PageRank
He, D.13313.67
Zhichao Zhou231.40
Chuang Gan325331.92
Fu Li432.42
Xiao Liu528441.90
Yandong Li6355.80
LiMin Wang781648.41
Shilei Wen87913.59