#include "stdafx.h"#include <opencv2/core/core.hpp>#include <opencv2/highgui/highgui.hpp>#include <iostream> #include <vector> #include<string>#include<sstream>using namespace std;using namespace cv;//Cut an image into m*n patchvoid Cut_img(Mat src_img, int m, int n, vector<Mat> ceil_img){  int t = m * n;  int height = src_img.rows;  int width = src_img.cols;  int ceil_height = height / m;  int ceil_width = width / n;  Mat roi_img;  //String concatenation  ostringstream oss;  string str, str1, str2;  Point p1, p2;  for (int i = 0; i<m; i++)  {    for (int j = 0; j<n; j++)    {      Rect rect(j*ceil_width, i*ceil_height, ceil_width, ceil_height);      src_img(rect).copyTo(roi_img);      ceil_img.push_back(roi_img);      oss << i;            str1 = oss.str();      oss.str("");      oss << j;      str2 = oss.str();      oss.str("");      str = "roi_img_" + str1 + "_" + str2;      imshow(str, roi_img);      IplImage *ipl_roi_img=&IplImage(roi_img);      //save processed img      char tmp[100]="/0";      sprintf(tmp,"..//post_img//71253_%d_%d.jpg",i,j);      cvSaveImage(tmp,ipl_roi_img);    }  }}int _tmain(int argc, _TCHAR* argv[]){  char *img_name_path="..//image//71253.jpg";  Mat img = imread(img_name_path,1);  imshow("src_img", img);  waitKey(0);  int m = 2;  int n = 2;  vector<Mat> ceil_img ;  Cut_img(img, m, n, ceil_img);  cvWaitKey(0);  return 0;}