基于单目摄像头的自主健身监测系统

随着在线健身资源的日益丰富，自主健身已成为新的运动趋势。然而由于缺少专业健身教练的动作指导与纠正，自主健身通常无法保障健身效果且容易造成运动损伤，因此需要对健身动作准确性进行实时监测。现有的健身监测设备往往依托大屏幕、深度摄像头或传感器等硬件，存在设备昂贵、安装不便、使用场景受限等问题，较难满足大众健身的需求。随着人体关键点检测技术的不断成熟，通过手机单目摄像头即可实现对人体姿态的识别，且有较高的准确度和速度，使得在手机端实现低成本、多场景的健身监测成为可能。基于以上背景，设计了三维场景下基于角度阈值的健身动作评估算法，依托于手机单目摄像头和3D人体关键点检测技术，实时检测用户健身动作是否标准并通过语音给出相应提示。同时，在安卓手机上实现了原型系统，通过一系列用户实验验证了系统的可用性与实时性，通过与近年相关工作的对比实验，验证了动作评估方法的准确性。结果表明，本文方法与系统被用户所认可，健身动作评估准确率较高、响应速度满足实时性要求。

An investigation on contributions from the school of function theory in Zhejiang University from1928 to 1950

Study on the spread for modern mathematics in China is the most significant part when reviewing the history of modern mathematics.The propagation of Fourier series in China plays a vital role in this process and the school of functionalism of Zhejiang University was a pioneer. It is recognized that the famous Chen-Hardy-Littlewood theorem is the first sign that modern Chinese mathematics has reached the world-class level. This paper discusses the contribution of the school of functionalism in Zhejiang University to the development of modern mathematics in China from the following aspects: an overview of the research and education of Fourier series in China and the pedagogical context of Chinese Fourier mathematicians. Mathematicians such as Jiangong CHEN, Fuchun WANG, Qingjun LU, Ruiyun XU, Minde CHENG and Fuchen XIANG had published 84 academic papers abroad, 25 papers domestically and one monograph which is related with Fouries series from 1928 to 1950. During this period,the school of functionalism won four academic prizes from the government of the Republic of China.