自适应阈值提取路面区域，对于后期做车辆检测比较有用，我自己调试过，可以运行的-Adaptive threshold extracted road area, for the latter to do more useful vehicle detection, I have to debug that we could run

用于车辆检测的自编程序，main为主函数(For vehicle detection of self programmed, main as the main function)