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A gait skeleton model extraction method based on the fusion between vision and tactility

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Abstract

In the traditional gait skeleton model, the fixed length proportions among different bones cause the loss of model personality, and the shoulder and hip points that are blocked by the body are difficult to be extracted. For those problems, a method based on the spatial and temporal fusion between vision and tactility is proposed, by which a equal proportion 3D gait skeleton model can be restructured in the camera coordinate system accurately through a single-frame image. In the geometric analysis process, some logical assumptions are proposed according to human anatomy and the laws of human movement, and an effective method is proposed for the extraction of thigh slope. The experimental result shows that the consistent equal proportion models, in which single bone length error is eventually controlled within\(\pm \,5\,{\text {mm}}\), can be extracted in different position under the premise of rapidity with the aid of this method. The extracted shoulder and hip points also meet the real human body skeleton structure, which lays the foundation for the integrity and rationality of the entire skeletal model.

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Acknowledgements

This work is supported by Master Innovation Funding Project Foundation of Hebei Province, P. R. China (Grant No. CXZZSS2018026), Science and Technology on Space Intelligent Control Laboratory (Grant No: ZDSYS-2017-08), State Key Laboratory of Robotics and System (HIT) (Grant No: SKLRS-2017-KF-15) and Hebei Natural Science Foundation (Grant No: F 2017202243).

Author information

Authors and Affiliations

  1. School of Mechanical Engineering, Hebei University of Technology, Tianjin, China

    Shijie Dai, Rui Wang & Huibo Zhang

  2. Hebei Key Laboratory of Robot Perception and Human–Robot Interaction, Hebei University of Technology, Tianjin, China

    Shijie Dai, Rui Wang & Huibo Zhang

Authors
  1. Shijie Dai

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  2. Rui Wang

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  3. Huibo Zhang

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Correspondence toHuibo Zhang.

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The authors declare that they have no conflict of interest.

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All procedures were performed in accordance with the ethical standards of the University of Auckland human participants and ethics approval committee (UAHPEC) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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