opencv 实现RSS图像增强算法c++
时间: 2023-06-10 18:08:41 浏览: 84
RSS(Rudin-Osher-Fatemi)算法是一种图像增强算法,用于去除图像中的噪声和平滑边缘。下面是使用OpenCV实现RSS算法的C++代码示例:
```cpp
#include <opencv2/opencv.hpp>
#include <iostream>
using namespace cv;
using namespace std;
void rss_filter(Mat& src, Mat& dst, double lambda, int iterations)
{
CV_Assert(src.type() == CV_8UC1);
// Convert to float
src.convertTo(src, CV_32F);
// Initialize output to be the same as input
dst = src.clone();
// Calculate gradient
Mat gx, gy;
Sobel(src, gx, CV_32F, 1, 0);
Sobel(src, gy, CV_32F, 0, 1);
for (int i = 0; i < iterations; i++)
{
// Calculate divergence
Mat div = gx + gy;
double minVal, maxVal;
minMaxLoc(abs(div), &minVal, &maxVal);
div = div / maxVal;
// Calculate diffusion coefficient
Mat c = 1.0 / (1.0 + lambda * abs(div));
// Update image
multiply(c, gx, gx);
multiply(c, gy, gy);
Mat temp = gx + gy;
temp.convertTo(temp, CV_8U);
dst = temp.clone();
}
// Convert back to 8-bit
dst.convertTo(dst, CV_8U);
}
int main(int argc, char** argv)
{
// Load image
Mat src = imread("image.jpg", 0);
// Apply RSS filter
double lambda = 0.25;
int iterations = 10;
Mat dst;
rss_filter(src, dst, lambda, iterations);
// Display result
imshow("Input", src);
imshow("Output", dst);
waitKey(0);
return 0;
}
```
在这个示例中,我们使用了OpenCV中的Sobel算子来计算梯度,并使用了循环来迭代算法。最终的输出结果是一个去除噪声和平滑边缘的图像。