实现目标的跟踪现运动目标的跟踪，一开始首先手动建立一个矩形框，提取目标的特征，然后随着目标的移动，矩形框跟着移动-Realize the target tracking is now moving target tracking, a first hand build a rectangular box, extract the characteristics of target, and then as the movement of the target, rectangular box w