Rational Passing Decision Based on Region for the Robotic Soccer
RoboCup 2007: Robot Soccer World Cup XI
A clustering method for spatio-temporal data and its application to soccer game records
RSFDGrC'05 Proceedings of the 10th international conference on Rough Sets, Fuzzy Sets, Data Mining, and Granular Computing - Volume Part I
Football analysis using spatio-temporal tools
Proceedings of the 20th International Conference on Advances in Geographic Information Systems
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In this paper, we present a method for visualization of an invisible feature in human group motion. This feature called 驴dominant region驴 is a kind of dynamic sphere of influence. A dominant region is defined as a region in where the person can arrive earlier than any other persons and can be formulated by replacing the distance function in the Voronoi region with a time function. As an application of the dominant region, a motion analysis system of team ball games was developed. In this system, the dominant region is used for quantitative evaluation of basic teamwork. From the experiments using actual soccer game scenes, it was shown that inferior or superior areas for each player and each team in the game can be observed visually and that some basic factor for teamwork can be evaluated quantitatively by using the dominant region. These evaluation results almost corresponded with those by some professionals.