openCV实现图像切割-蒲公英云

openCV实现图像切割

桃扇骨 2022-06-12 04:51 274阅读 0赞

openCV实现将图像切成m*n块：
一、代码部分：

#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 patch
void 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;
}