[Retracted] Remote Evaluation System of Tennis Batting Action Standard Based on Acceleration Sensor

<div>Acceleration signal waveform before and after system smoothing processing in this paper: (a) acceleration signal waveform before smoothing processing and (b) the acceleration signal waveform after smoothing processing.</div>

Security and Communication Networks

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Figure 6

Figure 6: [Retracted] Remote Evaluation System of Tennis Batting Action Standard Based on Acceleration Sensor 