#include<opencv2/opencv.hpp>#include<iostream>//#include <direct.h>usingnamespacecv;usingnamespacestd;constchar*output_win="mat-demo";intalpha_value=1;intalpha_max=100;intbeta_value=1;intbeta_max=100;voidDemo_Contours(int,void*);cv::Mat src;cv::Mat mat;intmain(){src=cv::imread("bi...