In this paper, a vision-based real-time exercise instruction system is proposed. The purposes of the system are to increase the exercise efficiency and to prevent users from being injured. This system uses a stereo-vision method to compute the 3D user information, and a vision-based pose estimation method to analyze the user's postures. The response time of the system is short enough such that the interaction between the user and the system can be done in real-time.

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