Activity classification for interactive game interfaces

Authors:
John Darby;Baihua Li;Nick Costen
Affiliations:
Department of Computing and Mathematics, The Manchester Metropolitan University, Manchester, UK;Department of Computing and Mathematics, The Manchester Metropolitan University, Manchester, UK;Department of Computing and Mathematics, The Manchester Metropolitan University, Manchester, UK
Venue:
International Journal of Computer Games Technology - Joint International Conference on Cyber Games and Interactive Entertainment 2006
Year:
2008

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Abstract

We present a technique for modeling and recognising human activity from moving light displays using hidden Markov models. We extract a small number of joint angles at each frame to form a feature vector. Continuous hidden Markov models are then trained with the resulting time series, one for each of a variety of human activity, using the Baum-Welch algorithm. Motion classification is then attempted by evaluation of the forward variable for each model using previously unseen test data. Experimental results based on real-world human motion capture data demonstrate the performance of the algorithm and some degree of robustness to data noise and human motion irregularity. This technique has potential applications in activity classification for gesture-based game interfaces and character animation.