Journal on Communications ›› 2020, Vol. 41 ›› Issue (8): 43-54.doi: 10.11959/j.issn.1000-436x.2020141

• Papers • Previous Articles     Next Articles

Sequential image deep learning-based Wi-Fi human activity recognition method

Qizhen ZHOU1,Jianchun XING1(),Qiliang YANG1,Deshuai HAN2   

  1. 1 College of Defense Engineering,Army Engineering University of PLA,Nanjing 210007,China
    2 College of Combat Support,Rocket Force University of Engineering,Xi’an 710025,China
  • Revised:2020-06-08 Online:2020-08-25 Published:2020-09-05
  • Supported by:
    The National Key Research and Development Program of China(2017YFC0704100)

Abstract:

For the problems existing in most of the researches,such as weak anti-noise ability,incompatible signal size and insufficient feature extraction of deep-learning-based Wi-Fi human activity recognition,a kind of sequential image deep learning-based recognition method was proposed.Based on the idea of sequential image deep learning,a series of image frames were reconstructed from time-varied Wi-Fi signal to ensure the consistency of input size.In addition,a low-rank decomposition method was innovatively designed to separate low-rank activity information merged in noises.Finally,a deep model combining temporal stream and spatial stream was proposed to automatically capture the spatiotemporal features from length-varied image sequences.The proposed method was extensively tested in WiAR dataset and self collected dataset.The experimental results show the proposed method could achieve the accuracy of 0.94 and 0.96,which indicate its high-accuracy performance and robustness in pervasive environments.

Key words: activity recognition, Wi-Fi signal, deep learning, image recognition, low-rank decomposition

CLC Number: 

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