中文说明：人工标定groundtruth，鼠标选定3个点，是平行四边形的标定。可用于目标检测、目标跟踪、机器视觉等等。代码完整，有两个文件）。
English Description：
Manual calibration of ground truth, mouse selected three points, is the calibration of parallelogram. It can be used for target detection, target tracking, machine vision and so on. Code integrity, there are two files).