1 #include<opencv2/opencv.hpp>
2 #include <iostream>
3 using namespace std;
4 using namespace cv;
5 void salt(Mat &image, int n);
6 int main()
7 {
8 /*
9 Mat image,result;
10 cout << "size," << image.size().height << "," << image.size().width << endl;
11 image = imread("C:\\Users\\Nelsoner\\Desktop\\Camera Roll\\01.jpg");
12 flip(image, result, 422);
13 namedWindow("Output");
14 imshow("Output", result);
15 //cout << "size," << image.size().height << "," << image.size().width << endl;
16 */
17 /*
18 Mat image(300, 300, CV_8UC3, Scalar(122));
19 namedWindow("Output");
20 imshow("Output",image);
21 */
22 Mat image = imread("C:\\Users\\Nelsoner\\Desktop\\Camera Roll\\05.jpg");
23 //调用函数，添加噪点
24 salt(image, 30000);
25 namedWindow("Output");
26 imshow("Output", image);
27 waitKey(50000);
28 return 0;
29 }
30
31 void salt(Mat &image, int n) { //添加噪点
32 for (int k = 0; k < n; k++) {
33 int i = rand() % image.cols;
34 int j = rand() % image.rows;
35 if (image.channels() == 1) { //灰度图
36 image.at<uchar>(j, i) == 25;
37 }
38 else if (image.channels() == 3) { //彩色图
39 image.at<Vec3b>(j, i)[0] = 25;
40 image.at<Vec3b>(j, i)[1] = 25;
41 image.at<Vec3b>(j, i)[2] = 25;
42 }
43 }
44 }
1 int main(int argc, char ** argv) {
2 Mat image = imread("C:\\Users\\Nelsoner\\Desktop\\Camera Roll\\05.jpg");
3 Mat imageClone = image.clone(); //克隆图像
4 Mat i = imageClone(Rect(40, 40, 500, 500));
5 Mat j;
6 j.create(image.rows/2, image.cols/2, image.type());
7 circle(i, Point(50, 50), 80, Scalar(15, 5, 225), 5);
8 namedWindow("hah");
9 imshow("hah", imageClone);
10 namedWindow("hei");
11 imshow("hei",j);
12
13 waitKey(100000);
14 }
