off是三维网格图形模型的常用标准格式，本程序可正确读取文件内容，并形成顶点及面的结构数据。

可以对点云添加噪声，对从网站上下载的标准点云研究提供基础数据，比如研究去噪方法，可通过添加噪声形成基础数据-You can add noise to the point cloud to the standard point cloud research downloaded from the website to provide basic data, such as research de-noising method can form the basis of the data by ad

此代码基于c++标准库，opencv和pcl点云库，可实现对摄像头调参，调用摄像头视频并读取画面中点的三维坐标获取点云数据-This code is based on c++ standard library, opencv and pcl point cloud library, can achieve the camera tuning, call the camera video and read the middle of the screen coordinates of the th