利用时空换算方法准确判断物体上升高度——由丁宁被判发球违例引出的思考

Using Time-space Conversion Formulas on Something Rising Height——Thought on Ding Ning Offences

运用物理学垂直上抛运动的基本概念,通过对视频基本单元帧及帧率的分析,给出了以帧为单位的时空换算公式。指出,借助视频播放软件,通过对相关帧的设别,确定符合要求的起始帧和终止帧,分别获取起始帧和终止帧的时间码地址,能根据时间码地址及帧率计算出该视频的有效时长,再根据时空换算公式计算出对应的高度。利用该方法分析了丁宁被判违例的多个发球视频,首次运用科学的方法证明了丁宁发球确实存在违例的结论,同时对该方法的应用前景作了展望。

This article applies vertical throwing motion of basic physics concepts through analysis video base unit frame, and frame rate, frames are given in units of time-space conversion formulas. Notes that, with the video playback software, through of the flame-level, determined to meet the requirements of the starting and ending frames, gets the starting and ending frames time-codes, respectively address, according to the time code addresses and calculates the effective length of the video frame rate, again based on time-space conversion formulas to calculate the corresponding height. Using the method more than Ding Ning offences were sentenced to serve video, using scientific methods has proved for the first time Dingning service does exist illegal conclusions, while a prospect of applications of the method.