Cited by 6Human Pose and Action RecognitionHand Gesture Recognition SystemsDomain Adaptation and Few-Shot Learning

View Enhanced Jigsaw Puzzle for Self-Supervised Feature Learning in 3D Human Action Recognition

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You, Wei, Wang, Xue·2022·IEEE Access

Abstract

Self-supervised learning methods have received much attention in skeleton-based human action recognition. These methods rely on pretext tasks to utilize unlabeled data and learn an effective feature encoder. In this paper, a novel self-supervised learning method is proposed. First, we design a new pretext task called view enhanced jigsaw puzzle (VEJP) to improve the learning difficulty of the encoder. The VEJP introduces multi-view information into the jigsaw puzzle, thus forcing the encoder to learn view-independent high-level features of human skeletons. Based on the encoder trained by VEJP, we propose the view pooling encoder (VPE) to integrate the information of multiple views with the pooling mechanism, and the features extracted by VPE are more robust and distinguishable. In addition, by adjusting the difficulty of VEJP, the influence of the pretext task difficulty on the downstream task performance is studied, and the experimental results show that the pretext tasks should be moderately difficult to achieve effective feature learning. Our method achieves competitive results on representative benchmark datasets. It provides a strong baseline for the jigsaw puzzle task and shows advantages in situations where the number of labeled data is minimal.

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  • You and Wang proposed VEJP to recognize 3D human actions, which captures multi-view data and forces the encoder to obtain view-independent high-level features from the human skeleton.

    “You and Wang [31] proposed using a view-enhanced jigsaw puzzle (VEJP) to recognize 3D human actions. VEJP captures multi-view data and forces the encoder to obtain view independent high-level features from the human skeleton.”

    From Self-supervised learning: A succinct review (2023) · cites this paper as [31]

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Research works printed but not linked: 6

  1. A. Vaswani, N. Shazeer, N. Parmar, J. Uszkoreit, L. Jones, A. N. Gomez, L. Kaiser, and I. Polosukhin, ''Attention is all you need,'' in Proc. Adv. Neural Inf. Process. Syst., 2017, pp. 5998-6008.
  2. N. Komodakis and S. Gidaris, ''Unsupervised representation learning by predicting image rotations,'' in Proc. Int. Conf. Learn. Represent., 2018, pp. 1-16.
  3. T. Chen, S. Kornblith, M. Norouzi, and G. Hinton, ''A simple framework for contrastive learning of visual representations,'' in Proc. Int. Conf. Mach. Learn., 2020, pp. 1597-1607.
  4. J. Wang, X. Nie, Y. Xia, Y. Wu, and S. Zhu, ''Action modeling, learning and recognition,'' in Proc. IEEE Conf. Comput., Vis. Pattern Recognit., Jun. 2014, pp. 2649-2656.
  5. D. P. Kingma and J. Ba, ''ADAM: A method for stochastic optimization,'' in Proc. Int. Conf. Learn. Represent., 2014, pp. 1-15.
  6. XUE WANG (Senior Member, IEEE) received the M.S. degree in measurement and instrument from the Harbin Institute of Technology, Harbin, China, in 1991, and the Ph.D. degree in mechani- cal engineering from the Huazhong University of Science and Technology, Wuhan, China, in 1994. From 1994 to 1996, he was a Postdoctoral Fellow of electrical power system with the Huazhong Uni- versity of Science and Technology. He then joined the Department of Precision Instrument, Tsinghua University, Beijing, China, where he is currently a Professor and the Vice Dean of the Department of Precision Instrument. From 2001 to 2002, he was a Visiting Professor with the Department of Mechanical Engineering, University of Wisconsin-Madison. His research interests include topics in wireless sensor networks, cyber physical systems, intelligent biosignal processing, medical image processing, and smart energy utilization. He is a Senior Member of the IEEE Instrumentation and Measurement Society, the Computer Society, the Computational Intelligence Society, and the Commu- nications Society.

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Authors
You, W., & Wang, X.
Affiliations
Tsinghua University (CN)
Venue
IEEE Access
Published
2022
Volume
10
Pages
36385-36396
ISSN
2169-3536 (ISSN-L)
OpenAlex
W4226194958
Cited by
6
References
47
Citations by year
2025: 1 · 2024: 2 · 2023: 3
FWCI
0.49
Type
journal article
Language
en
Open access
Locations
  • IEEE Access (publishedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
National Key Research and Development Program of China (2018YFB2003200, 2018YFB2003500)
Topics
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Human Pose and Action Recognition
  • Physical Sciences › Computer Science › Human-Computer Interaction › Hand Gesture Recognition Systems
  • Physical Sciences › Computer Science › Artificial Intelligence › Domain Adaptation and Few-Shot Learning
Keywords
self-supervised learning, skeleton-based action recognition, unlabeled data

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