主要思想是用meanshift算法跟踪目标，拖动矩形框选择目标模板，meanshift自动跟踪

本程序的主要缺陷体现在帧差法自动识别目标，这部分功能与上一个功能独立，可用可不用，用于自动识别目标，效果不是很好，主要体现在对图像视频的要求是 背景（目标以外的所有事物）不能动-The main idea is to use meanshift algorithm to track the target and drag a rectangle to select the target template, meanshift automatic tracking

The main drawback of the program is reflected in the frame difference method automatically identifies the target, which is part of the function and one function independently, may or may not, be used to automatically identify the target, the effect is not very good, mainly reflected in the requirements of the video image is the background (target All things outside) can not move