Structure based feature extraction in basketball zone defence strategies

Zheng, A., Ma, J., Petridis, Miltiadis, Tang, J. and Luo, B. (2010) Structure based feature extraction in basketball zone defence strategies International Journal of Computer Science and Applications, 7 (3). pp. 18-32. ISSN 0972-9038

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This paper proposes a framework for structure-based feature extraction in basketball zone-defense strategies. Firstly, a graphical representation for key-frames extracted from zone-defense video clips is introduced, where each key-frame is expressed in terms of a zone-defense graph, representing the positions of defenders and the ball. Secondly, defense-lines are defined and extracted from zone-defense graphs for each zone-defense strategy, based on which, a 10- dimentional feature vector with respect to the defense-lines is introduced to characterize the structure relationships. Experiments have been conducted for basketball zone-defense strategy detection on both simulated and real-life basketball zone-defense video database, which demonstrate the validation and practicability of such a structure based feature characterization, and, in particular, its robustness with respect to the disturbance of local transformation of subprime nodes in the graphs.

Item Type: Journal article
Uncontrolled Keywords: Feature extraction; Graphical representation; Structure relationship; Video clip detection; Basketball zone-defense
Subjects: G000 Computing and Mathematical Sciences > G400 Computing
Faculties: Faculty of Science and Engineering > School of Computing, Engineering and Mathematics > Computational Intelligence
Depositing User: Converis
Date Deposited: 12 Jan 2012 13:30
Last Modified: 01 May 2015 13:00

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