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About this paper
Yudai Washida, Yuto Kase, Kai Ishibe, Ryoma Yasuda, Sakiko Hashimoto
Researchers at MIZUNO Corporation developed an event-camera-based method for automatically estimating impact time, impact location on the racket, and post-impact shuttlecock speed in badminton smashes. This integrated approach achieved high success rates and showed small biases when compared to a high-speed camera reference system, with a 1.84 ms bias for impact time, 3.45 mm for medio-lateral impact location, -1.92 mm for longitudinal impact location, and -1.00 m/s for shuttlecock speed.
Key insights
- Event cameras' microsecond temporal resolution and data efficiency make them particularly well-suited for capturing and analyzing ultra-fast, transient events in sports like badminton smashes.
- An integrated, automated processing pipeline can simultaneously extract multiple critical impact parameters, providing a comprehensive view that is challenging to obtain efficiently with traditional frame-based systems.
- The method's ability to maintain agreement with reference measurements across the range of values (absence of proportional bias) suggests its robustness for evaluating diverse smash performances.
Summary by alphaXiv.
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