opencv删除轮廓

 #include <opencv2/opencv.hpp>

 #include<iostream>

 using namespace std;

 using namespace cv;

 int main()

 {

     Mat img_in,img_out;

     img_in = imread("1.jpg",);

     threshold(img_in, img_out, , ,THRESH_BINARY);

     Mat img_out2;

     vector< vector< Point> > contours;

     findContours(img_out2, contours, RETR_TREE, CHAIN_APPROX_NONE);

     vector<vector<Point> >::iterator itc = contours.begin();

     while (itc != contours.end())

     {

         if (itc->size()<)

         {

             itc = contours.erase(itc);

         }

         else

         {

             ++itc;

         }

     }

     drawContours(img_out2, contours, -, Scalar(),);

     imshow("结果图", img_out2);

     waitKey();

     return ;

 }