Opencv 通过ROI图像合并

Opencv 通过ROI图像合并

#include<iostream>
#include<stdio.h>
#include <opencv2/core.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgproc.hpp>
using namespace cv;
using namespace std;

int main(int argc, char *argv)
{
    Mat image1 = imread("1.jpg");
    Mat image2 = imread("2.jpg");
    int height = 0;
    int width1 = image1.cols;
    int width2 = image2.cols;
    //保证图像高度一致，并同比例缩放
    if (image1.rows > image2.rows)
    {
        height = image2.rows;
        width1 = image1.cols*((float)image2.rows / image1.rows);
        resize(image1,image1, Size(width1, height));
    }
    else if(image1.rows < image2.rows)
    {
        height = image1.rows;
        width2 = image2.cols*((float)image1.rows / image2.rows);
        resize(image2, image2, Size(width2, height));

    }
    //创建目标Mat
    Mat dst;
    dst.create(height, width1 + width2, image1.type());
    Mat r1 = dst(Rect(0, 0, width1, height));
    image1.copyTo(r1);
    Mat r2 = dst(Rect(width1, 0, width2, height));
    image2.copyTo(r2);

    namedWindow("dst");
    imshow("dst", image2);
    waitKey(0);
    return 0;
}