update

basic/splitmerge.cpp

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+// 图像通道分离与合并
+#include<opencv2/opencv.hpp>
+#include<iostream>
+
+using namespace std;
+using namespace cv;
+
+int main()
+{
+    string image_path = "../img/1.png";
+    Mat image = imread(image_path);
+    Mat result = image.clone();
+    // 定义向量数组接收通道
+    vector<Mat> channels;
+    // 拆分
+    split(result,channels);
+
+    Mat b = channels[0];
+    Mat g = channels[1];
+    Mat r = channels[2];
+
+    imshow("Blue Channel (Grayscale)", channels[0]);
+    imshow("Green Channel (Grayscale)", channels[1]);
+    imshow("Red Channel (Grayscale)", channels[2]);
+
+    // merge
+    Mat merged_img;
+    vector<cv::Mat> channels_to_merge;
+    channels_to_merge.push_back(b);
+    channels_to_merge.push_back(g);
+    channels_to_merge.push_back(r);
+
+    merge(channels_to_merge, merged_img);
+    imshow("merged",merged_img);
+
+    waitKey(0);
+
+    return(0);
+}