图像去噪

/*
加噪，去噪
*/
#include<opencv2\opencv.hpp>
#include<iostream>
using namespace cv;
using namespace std;

int main() {
	double t0 = (double)getTickCount();
	Mat img_org = imread("D://图片//5.jpg");

	if (img_org.empty()) {
		cout << "图片加载失败！" << endl;
		return -1;
	}
	Mat noisy = img_org.clone();      //复制图像
	Mat noise(img_org.size(), img_org.type());     //制造噪声
	randn(noise, 0, 100);
	noisy += noise;           //将噪声加载在图片上
	Mat result;
	fastNlMeansDenoisingColored(noisy, result,30,30);     //最后的两个值越大效果越明显

	imshow("noisy", noisy);
	imshow("result", result);

	double elapsed = ((double)getTickCount() - t0) / getTickFrequency();      //显示运行时间
	cout << "t = " << elapsed << endl;
	waitKey(0);

	destroyAllWindows;

	return 0;
}

运行结果：