OpenCV学习：Mat矩阵合并两张图像

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学习OpenCV有一段时间，总结一下，以备忘。

#include "opencv2/core/core.hpp"#include "opencv2/highgui/highgui.hpp"#include "opencv2/imgproc/imgproc.hpp"using namespace cv;int main(int argc, char **argv){Mat img_left = imread("church01.jpg");Mat img_right = imread("church02.jpg");Size size(img_left.cols + img_right.cols, MAX(img_left.rows, img_right.rows));Mat img_merge;Mat outImg_left, outImg_right;img_merge.create(size, CV_MAKETYPE(img_left.depth(), 3));img_merge = Scalar::all(0);outImg_left = img_merge(Rect(0, 0, img_left.cols, img_left.rows));outImg_right = img_merge(Rect(img_left.cols, 0, img_right.cols, img_right.rows));if(img_left.type() == CV_8U){cvtColor(img_left, outImg_left, CV_GRAY2BGR);}else{img_left.copyTo(outImg_left);}if(img_right.type() == CV_8U){cvtColor(img_right, outImg_right, CV_GRAY2BGR);}else{img_right.copyTo(outImg_right);}imshow("merge", img_merge);imwrite("merge.jpg", img_merge);waitKey(0);return 0;}

练习用的图像分别为

church01.jpg：

church02.jpg：

运行得到的结果为：