// 01_Combine_Two_Images.cpp

// 环境 VS2017 + OpenCV4.4.0

// 功能介绍：用于将两张图片拼接成一张大图(以左右拼接为例)，俗称的硬拼方法

// 特点：简单粗暴，实际应用对拍摄条件要求苛刻，适用性差

#include "pch.h"

#include <iostream>

#include <math.h>

#include <opencv2/opencv.hpp>

using namespace std;

using namespace cv;

int main()

{

  Mat img1 = imread("01.jpg");

  Mat img2 = imread("02.jpg");

  if (img1.empty() || img2.empty())

  {

    cout << "加载图片失败，请检查对应路径图片是否存在！" << endl;

    return 1;

  }

  imshow("src1", img1);

  imshow("src2", img2);

  int w1 = img1.cols; int h1 = img1.rows;

  int w2 = img2.cols; int h2 = img2.rows;

  int width = w1 + w2; int height = max(h1, h2);

  Mat  resultImg = Mat(height, width, CV_8UC3, Scalar::all(0));

  Mat ROI_1 = resultImg(Rect(0, 0, w1, h1));

  Mat ROI_2 = resultImg(Rect(w1, 0, w2, h2));

  img1.copyTo(ROI_1);

  img2.copyTo(ROI_2);

  imshow("result", resultImg);

  imwrite("result.jpg", resultImg);

  waitKey(0);

  return 0;

}

int width = max(w1, w2); int height = h1 + h2;