Analysis and Classification Tools for Automatic Process of Punches and Kicks Recognition

Analysis and Classification Tools for Automatic Process of Punches and Kicks Recognition

Dora Lapkova (Tomas Bata University in Zlin, Czech Republic), Zuzana Kominkova Oplatkova (Tomas Bata University in Zlin, Czech Republic), Michal Pluhacek (Tomas Bata University in Zlin, Czech Republic), Roman Senkerik (Tomas Bata University in Zlin, Czech Republic) and Milan Adamek (Tomas Bata University in Zlin, Czech Republic)
Copyright: © 2017 |Pages: 25
DOI: 10.4018/978-1-5225-0565-5.ch006
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Abstract

This chapter deals with the pattern recognition in the time series. The data was obtained from the measurement of the force profiles via strain gauge sensor. This pattern recognition should help to classify different techniques of the professional defence (direct punch, direct and round kicks) and gender of the attacker. The aim is to find a suitable feature sets from the measured raw data which has to be transferred in appropriate way; in the case of this research spectral analysis or discrete cosine transformation were used. Based on the previous experience of authors, artificial neural networks with Levenberg-Marquardt training algorithm were selected as a classifier. In these experimentations, students from the Faculty of Applied Informatics, Tomas Bata University in Zlin participated. The results were successful and higher level than expected accuracy of 85% was achieved. The future plans include involving more participants and repeating the simulations to confirm the proposed technique.
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Punch And Kick Techniques

During the data collecting, participants were asked to perform several punch and kick techniques - direct punch, direct kick and round kick.

Direct punch is based on energy which is transferred through arms, particularly through closed fist (Figure 1). This type of punch is delivered by the arm following a direct line. The aim is to stop the attacker and increase distance between the defender and an attacker. In the following experiment, the punch was delivered by the back hand (Lapkova et al., 2014 a).

Figure 1.

Direct punch

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