[opencv]approxDP多边形逼近获取四边形轮廓信息

复制代码#include "opencv2/opencv.hpp" #include <iostream> #include <math.h> #include <string.h> using namespace cv; using namespace std; int thresh = 50, N = 11; const char* wndname =

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#include "opencv2/opencv.hpp"
#include <iostream>
#include <math.h>
#include <string.h>

using namespace cv;
using namespace std;


int thresh = 50, N = 11;
const char* wndname =