update

basic/splitmerge.cpp

@@ -0,0 +1,39 @@
+// 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);
+}

basic/zoom.cpp

@@ -0,0 +1,40 @@
+#include <opencv2/opencv.hpp>
+#include <iostream>
+
+int main() {
+    // 读取图像
+    cv::Mat img = cv::imread("../img/1.png");
+    if (img.empty()) {
+        std::cout << "无法读取图像" << std::endl;
+        return -1;
+    }
+
+    // 1. 缩放
+    cv::Mat resized_img;
+    cv::resize(img, resized_img, cv::Size(200, 200));
+    cv::imshow("resized_img", resized_img);
+
+    // 2. 旋转
+    cv::Mat rotated_img, M_rot;
+    cv::Point2f center(img.cols / 2.0, img.rows / 2.0);
+    M_rot = cv::getRotationMatrix2D(center, 45, 1.0);
+    cv::warpAffine(img, rotated_img, M_rot, img.size());
+    cv::imshow("rotated_img", rotated_img);
+
+    // 3. 平移
+    cv::Mat translated_img;
+    cv::Mat M_trans = (cv::Mat_<float>(2, 3) << 1, 0, 100, 0, 1, 50);
+    cv::warpAffine(img, translated_img, M_trans, img.size());
+    cv::imshow("translated_img", translated_img);
+
+    // 4. 翻转
+    cv::Mat flipped_img;
+    cv::flip(img, flipped_img, 1);
+    cv::imshow("flipped", flipped_img);
+
+    // 显示结果
+    cv::imshow("Original", img);
+    cv::waitKey(0);
+
+    return 0;
+}