读入mit-bih心律失常数据库的文件，并根据读取文件的数据画出心脏跳动波形图-Read into the mit-bih arrhythmia database files, and read the file according to the data to draw the heart beat waveform

使用三帧差法，对48孔板中的斑马鱼进行轨迹跟踪，最后绘制出每个孔板中的鱼的运动轨迹与运动距离。-Using three frame difference method, to the trajectory tracking of 48 orifice in zebrafish, finally draw out each orifice fish movement and movement in the distance.