成为自己的教练:智能手机的运动感知

Sports are the ways that people need to take exercises. However, better performance can not be achieved effectively just by exercises, highly cost coach and professional apparatus are probably needed, those are what common people can not afford. In this paper, we proposed a very low-cost alternative solution: monitoring body action during sports using smart phone to visualize the whole process of movement in fine time dimension. As a smart phone is cheap and public in current days, with our system, every common person can be a sport expert. We have implemented our system on real word smart phones with android system. As shown in this paper, take the 100 meter race for instance, our system can reproduce the velocity and acceleration during the race. Five phases of the race, Preparation, Start of Race, Acceleration, Sprint, Cross the End, can be automatically recognized and performance of athlete can be detailedly presented.