Re: CvSobel

Hello,
I have problems accesing the pixel correctly. How Ca I access a pixel value of 
a 32F IplImage?

Best Regards 
Stefan





Am Dienstag, 7. März 2006 16:21 schrieb Leonardo Max Batista Claudino:
> Hello,
>
> >If I run following code...
> >
> > IplImage* derivx = cvCreateImage(cvSize(width,height),IPL_DEPTH_16S,1);
> > IplImage* scaledderivx =
> > cvCreateImage(cvSize(width,height),IPL_DEPTH_8U,1);
> > cvSobel(image2,derivx,1,0);
>
> You have to specify both x and y orders AND the aperture size, like:
>
> cvSobel(image2,derivx,1,0,1)  - for  x-first-derivatives and
> cvSobel(image2,derivx,0,1,1)  - for  y-first-derivatives.
>
> When the aperture size is 1, a three-sized window is employed but no
> gaussian blurring is performed in the result. Try that ...
>
> Leonardo

-- 
Stefan Meyer
Phone: +49 9131 85-25158
Fax: +49 9131 85-25149

University of Erlangen-Nuremberg
 Department of Computer Science 12
 (Hardware-Software-Co-Design)
 Am Weichselgarten 3
 D-91058 Erlangen
 Germany


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