1 #include <opencv2\core\core.hpp>
2 #include <opencv2\highgui\highgui.hpp>
3 #include <opencv2\imgproc\imgproc.hpp>
4 #include <iostream>
5
6
7 void salt(cv::Mat& image, int n)
8 {
9
10 for(int k=0; k<n; k++)
11 {
12
13 int i = rand() % image.cols;
14 int j = rand() % image.rows;
15
16 // 灰度图像
17 if(image.channels() == 1)
18 {
19 cv::Mat_<uchar> img = image;
20 img(j,i) = 255;
21 }else{// 彩色图像
22 cv::Mat_<cv::Vec3b> img = image;
23 //image.at<cv::Vec3b>(j,i)[0] = 255;
24 //image.at<cv::Vec3b>(j,i)[1] = 255;
25 //image.at<cv::Vec3b>(j,i)[2] = 255;
26
27 img(j,i)[0] = 255;
28 img(j,i)[1] = 255;
29 img(j,i)[2] = 255;
30 }
31
32 }
33
34 }
35
36
37 int main(int argc, char** argv)
38 {
39
40 cv::Mat img = cv::imread("F:\\images\\boldt.jpg");
41 cv::Mat img2 = img.clone();
42
43 double duration;
44 duration = static_cast<double>(cv::getTickCount());
45
46 salt(img, 3000);
47
48 duration = static_cast<double>(cv::getTickCount()) - duration;
49 duration /= cv::getTickFrequency();
50
51 cv::namedWindow("original");
52 cv::imshow("original", img);
53 cv::namedWindow("altered");
54 cv::imshow("altered", img2);
55
56 std::cout << duration << std::endl;
57
58 cv::waitKey(0);
59 return 0;
60
61 }
