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Tai Chi Postures Used for Automatic Recognition of Body Movements
May 27, 2013 -
The current means of locating specific movements in film necessitate hours of viewing, making the task of conducting research into movement characteristics and patterns tedious and difficult. This is particularly problematic for the research and analysis of complex movement systems such as sports and dance. While some systems have been developed to manually annotate film, to date no automated way of identifying complex, full body movement exists. With pattern recognition technology and knowledge of joint locations, automatically describing filmed movement using computer software is possible.

A study by Dept of Mechanical and Aerospace Engineering, University of Virginia, utilized various forms of lower body kinematic analysis to identify codified dance movements. They created an algorithm that compares an unknown move with a specified start and stop against known dance moves. Their recognition method consists of classification and template correlation using a database of model moves.

This system was optimized to include nearly 90 dance and Tai Chi movements, producing accurate name identification in over 97% of trials. In addition, the program had the capability to provide a kinematic description of either matched or unmatched moves obtained from classification recognition. This study is published in the May 2013 issue of Journal of Journal of Applied Biomechanics.




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