这两张是使用的图片,然后第一张图片可以添加10000个噪声,但是第二张图片添加20个噪声就会出错,想不通是为什么。
#include<iostream>
#include<opencv2/core.hpp>
#include<opencv2/highgui.hpp>
#include<opencv2/imgproc.hpp>
#include<random>
using namespace std;
using namespace cv;
///img是要处理的图片,n是产生的噪点数
void salt(Mat img, int n);
int main()
{
string picture = "C:/Users/86180/Desktop/picture/4.jpg";
Mat img = imread(picture, IMREAD_UNCHANGED);
int n = 15;
imshow("原图", img);
salt(img, n);
imshow("加入椒盐噪点后的图", img);
waitKey();
return 0;
}
void salt(Mat img, int n)
{
int i, j, k;
//创建随机数引擎
static default_random_engine e;
//创建取值范围
static uniform_int_distribution<unsigned> randomRow(0, img.rows - 1);
static uniform_int_distribution<unsigned> randomCol(0, img.cols - 1);
for (k = 0; k < n; k++)
{
i = randomRow(e);
j = randomCol(e);
if (img.type() == CV_8UC1)
{
img.at<uchar>(j, i) = 255;
}
else if (img.type() == CV_8UC3)
{
img.at<Vec3b>(j, i)[0] = 255;
img.at<Vec3b>(j, i)[1] = 255;
img.at<Vec3b>(j, i)[2] = 255;
}
}
}