BDTA: events classification in table tennis sport using scaled-YOLOv4 framework

Author:

Hashmi Mohammad Farukh1,Naik Banoth Thulasya1,Keskar Avinash G.2

Affiliation:

1. Department of Electronics and Communication Engineering, National Institute of Technology, Warangal, India

2. Department of Electronics and Communication Engineering, Visvesvaraya National Institute of Technology Nagpur, India

Abstract

Computer vision algorithms based on deep learning have evolved to play a major role in sports analytics. Nevertheless, in sports like table tennis, detecting the ball is a challenge as the ball travels at a high velocity. However, the events in table tennis games can be detected and classified by obtaining the locations of the ball. Therefore, existing methodologies predict the trajectories of the ball but do not detect and classify the in-game events. This paper, therefore, proposes a ball detection and trajectory analysis (BDTA) approach to detect the location of the ball and predict the trajectory to classify events in a table tennis game. The proposed methodology is composed of two parts: i) Scaled-YOLOv4 which can detect the precise position of the ball ii) Analysis of trajectory based on ball coordinates to detect and classify the events. The dataset was prepared and labeled as a ball after enhancing the frame resolution with a super-resolution technique to get the accurate position of the ball. The proposed approach demonstrates 97.8% precision and 98.1% f1-score in detecting the location of the ball and 97.47% precision and achieved 97.8% f-score in classifying in-game events.

Publisher

IOS Press

Subject

Artificial Intelligence,General Engineering,Statistics and Probability

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