opencv学习笔记1 加载图像 图像融合 分通道与合并

1 #include<opencv.hpp>
2 using namespace cv;
3 int main()
4 {
5     Mat a = imread("E:/test.jpg");
6     imshow("picture", a);
7     waitKey();
8     return 0;
9 }

 1 #include<opencv2/opencv.hpp>
 2 #include<opencv2/core/core.hpp>
 3 #include<opencv2/highgui/highgui.hpp>
 4 
 5 using namespace cv;
 6 using namespace std;
 7 
 8 int main()
 9 {
10     Mat background = imread("E:/test.jpg"); 
11 
12     Mat logo = imread("E:/logo.jpg");
13 
14     Mat imageROI=background(Rect(100, 100, logo.cols, logo.rows));  //在background上定义感性区域
15 
16     addWeighted(imageROI, 0.5, logo, 0.3, 0., imageROI); //融合，将logo融合到ROI上，保存为ROI
17     
18     waitKey();
19     return 0;
20 }

 1 #include<iostream>
 2 #include<vector>
 3 #include<opencv2/opencv.hpp>
 4 using namespace std;
 5 using namespace cv;
 6 int main3()
 7 {
 8     Mat src = imread("E:/test.jpg");
 9     imshow("src", src);
10     vector<Mat> channels;
11     split(src, channels);
12     
13     Mat blue, green, red;
14     blue = channels.at(0);
15     green= channels.at(1);
16     red= channels.at(2);
17     imshow("blue", blue);
18     imshow("green", green);
19     imshow("red", red);
20 
21     waitKey();
22     return 0;
23 }

1 Mat dst;
2     merge(channels, dst);
3     imshow("dst", dst);