Question

opencv如何加入椒盐噪声

Answer 1

#include "opencv2/opencv.hpp"
using namespace cv;

void salt(Mat&img,int n)
{
for(int k=0;k<n;k++)
{
int i=rand()%img.cols ;
int j=rand()%img.rows;
if(img.channels()==1)
{
img.at<uchar>(j,i)=255;
}else if(img.channels()==3){
img.at<Vec3b>(j,i)[0]=0;
img.at<Vec3b>(j,i)[1]=0;
img.at<Vec3b>(j,i)[2]=255;
}

}
}
int main()
{
Mat img=imread("bb.jpg");
if(!img.data)
{
printf("fail to load Image");
exit (0);
}
salt(img,2000);
namedWindow("AA");
imshow("AA",img);
waitKey(0);
return 0;
}