（7）给图像添加椒盐噪声

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/cup160828/article/details/81019283

#include<opencv2/opencv.hpp>
#include<iostream>
#include<random>


using namespace std;
using namespace cv;


void salt(Mat image, int n)
{
//C++11的随机数生成器
default_random_engine generator;
uniform_int_distribution<int> randomRow(0, image.rows - 1);
uniform_int_distribution<int> randomCol(0, image.cols - 1);
int i, j;
for (int k = 0; k < n; k++)
{
//随机生成图形位置
i = randomCol(generator);
j = randomRow(generator);
if (image.type() == CV_8UC1)  //灰度图像
{
//单通道8位图像
image.at<uchar>(j, i) = 255;
}
else if (image.type() == CV_8UC3)  //彩色图像
{
//三通道图像
image.at<Vec3b>(j, i)[0] = 255;
image.at<Vec3b>(j, i)[1] = 255;
image.at<Vec3b>(j, i)[2] = 255;
}
}
}
int main()
{
Mat image = imread("C:\\Users\\Administrator\\Desktop\\1.jpg");
salt(image, 3000);  //调用函数增加噪声


//显示结果
namedWindow("Image");
imshow("Image", image);
waitKey(0);
return 0;
}