BlurringImage 平滑处理

#include<iostream>
#include<opencv2/highgui/highgui.hpp>
#include<opencv2/imgproc/imgproc.hpp>

using namespace cv;
using namespace std;

Mat src, dst;
int slider = 5;
float sigma;

void on_trackbar(int, void*)
{
int k_size = max(1, slider);
k_size = k_size % 2 == 0 ? k_size + 1 : k_size;
setTrackbarPos("KerSize", "Blurred Image", k_size);
sigma = 0.3*((k_size - 1)*0.5 - 1) + 0.8;
GaussianBlur(src, dst, Size(k_size, k_size), sigma);
imshow("Blurred Image", dst);
}
int main()
{
src = imread("dave.jpg");
if (!src.data)
{
cerr << "Image could't open successfully" << endl;
return -1;
}
imshow("Original Image", src);
sigma = 0.8 + 0.3*((slider - 1)*0.5 - 1);
GaussianBlur(src, dst, Size(slider, slider), sigma);
imshow("Blurred Image", dst);

createTrackbar("KerSize", "Blurred Image", &slider, 21, on_trackbar);//设置滚动条

waitKey(0);
return 0;
}