#include<opencv2\opencv.hpp>
#include<iostream>
using namespace cv;
using namespace std;
int main()
{
Mat img = imread("1.jpg");
pyrDown(img, img);
pyrDown(img, img);
imshow("test", img);
resize(img, img, Size(4000, 4000), 0, 0, CV_INTER_LINEAR);
threshold(img,img, 50, 200,1);
imwrite("1.pgm", img);
cout << img.cols << img.rows << endl;
Mat img1 = imread("1.pgm");
imshow("test1", img1);
waitKey(0);
return 0;
}
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