维纳滤波 [英] Wiener filtering

问题描述

我想写一个维纳滤镜来改善图像。我不想使用傅里叶变换，我知道有一个中值和方差为基础的ALG，但我找不到它。你能帮助我吗？
http://en.wikipedia.org/wiki/Wiener_filter

解决方案

我想这就是你要找的。这段代码是由Ray Juang编写的。

使用上面的代码的例子

pre $ void $（main argc， char * argv []）
if（argc <= 1）{
printf（Usage：％s< image> \\\
，argv [0]）;
return;
}

IplImage * tmp = cvLoadImage（argv [1]）;
IplImage * tmp2 = cvCreateImage（cvSize（tmp-> width，tmp-> height），IPL_DEPTH_8U，1）;

cvCvtColor（tmp，tmp2，CV_RGB2GRAY）;

cvNamedWindow（Before）;
cvShowImage（Before，tmp）;

cvWiener2（tmp2，tmp2，3,3）;
cvNamedWindow（After）;

cvShowImage（After，tmp2）;
//cvSaveImage(\"C:/temp/result.png，tmp2）;
cvWaitKey（-1）;


cvReleaseImage（& tmp）;
cvReleaseImage（& tmp2）;
}

I want to write a Wiener filter to improve an image. I don't want to use fourier, i know there is a median and variance based alg, but i can't find it. Can you help me guys? http://en.wikipedia.org/wiki/Wiener_filter

解决方案

I think this is what you are looking for. This code is written by Ray Juang.

example on using above code

void main(int argc, char *argv[])
    if (argc <= 1) {
            printf("Usage: %s <image>\n", argv[0]);
            return;
        }

    IplImage *tmp = cvLoadImage(argv[1]);
    IplImage *tmp2 = cvCreateImage(cvSize(tmp->width, tmp->height), IPL_DEPTH_8U, 1);

    cvCvtColor(tmp, tmp2, CV_RGB2GRAY);

    cvNamedWindow("Before");
    cvShowImage("Before", tmp);

    cvWiener2(tmp2, tmp2, 3,3);
    cvNamedWindow("After");

    cvShowImage("After", tmp2);
    //cvSaveImage("C:/temp/result.png", tmp2);
    cvWaitKey(-1);


    cvReleaseImage(&tmp);
    cvReleaseImage(&tmp2);
}

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