Home > Published Issues > 2023 > Volume 14, No. 1, 2023 >
JAIT 2023 Vol.14(1): 138-144
doi: 10.12720/jait.14.1.138-144

Analysis of Playing Positions in Tennis Match Videos to Assess Competition Using a Centroid Clustering Heatmap Prediction Technique

Kanjana Boonim
Department of Information Technology, Faculty of Sport Science & Health, Thailand National Sports University Bangkok Campus, Pathum Thani, Thailand
Email: kboonim@gmail.com

Manuscript received September 9, 2022; revised November 12, 2022; accepted January 5, 2023; published February 24, 2023.

Abstract—This research aimed to use clustered heatmap positioning analytical techniques in tennis in order to be able to analyze the positions of tennis players. A heatmap represents the cumulative frequency of tennis players’ movements in each zone of the tennis court. The performance testing of centroid clustering heatmap position analysis was achieved on selected men’s doubles tennis matches during the SINGHA CLASSIC 2019 competition. The research was done by collecting the cumulative frequency data and replacing it with intensity of color space. The process started with, firstly, cutting videos for each match based on the area of the court that could be seen clearly by the cameras in the field. Secondly, the video was converted into binary images. Thirdly, noise reduction was performed using morphological techniques. Fourthly, the centroid position was identified using a connected component and blob analysis. Fifthly, clustering data with k-mine was used to predict new tracks by Kalman filter. Finally, the percentage of player position in the three zones of the tennis court was calculated with the percent yield formula. The experimental results clearly showed the cumulative frequency of the players’ movement with the intensity of color space, allowing coaches and players to easily understand and use the data in planning for the next practice or competition.

Keywords—video analysis, heatmap technique, centroid clustering, cluster analysis, heatmap regression model, playing pattern analysis

Cite: Kanjana Boonim, "Analysis of Playing Positions in Tennis Match Videos to Assess Competition Using a Centroid Clustering Heatmap Prediction Technique," Journal of Advances in Information Technology, Vol. 14, No. 1, pp. 138-144, February 2023.

Copyright © 2023 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.