### Sharpening image

Hi,
i want to sharp an image and i am using the laplacian operator.
I have the blurred image, compute the laplacian (the grayish image where
is easy to see the boarder ) but when i add them i have a weird output.
The image get worst. The same by subtraction..d you know why?
Thank you

this is how i compute the lalpacian..

```
#include "LaplacianZC.h"
LaplacianZC::LaplacianZC() : aperture(3) {}
void LaplacianZC::setAperture(int a)
{
aperture=a;
}
Mat LaplacianZC::computeLaplacian(const Mat& image)
{
Laplacian(image,laplace,CV_32F);
img=image.clone();
return laplace;
}
Mat LaplacianZC::getLaplacianImage(double scale)
{
if (scale <0)
{
double lapmin,lapmax;
minMaxLoc(laplace,&lapmin,&lapmax);
scale=127/max(-lapmin,lapmax);
}
Mat laplaceImage;
laplace.convertTo(laplaceImage,CV_8U,scale,128);
return laplaceImage;
}
```

here is my image
C:\fakepath\blurred.png

and the laplacian
C:\fakepath\laplacian.png

I just add them as ~~follows:
addWeighted(blurred,1,laplacian,1,0,output,-1);~~

follows: ```
addWeighted(blurred,1,laplacian,1,0,output,-1);
```

thanks