障碍物识别:http://www.elecfans.com/d/823477.html
分水岭:https://blog.csdn.net/fengye2two/article/details/79116105
高斯滤波:https://blog.csdn.net/qq_37568748/article/details/80344709
candy边缘检测:https://www.cnblogs.com/techyan1990/p/7291771.html
视差测物体大小和距离:https://blog.csdn.net/chentravelling/article/details/53671279
相机焦距f:https://www.cnblogs.com/zipeilu/p/6658177.html
原文:https://www.cnblogs.com/wulinmenghuantejing/p/12091412.html