error using Erode: stride value is less than the row length

[saevarg123]

Hi,

I am having a hard time using the function erode. It constantly delivers the error stride value is less than the row length. I am using IPP 6.0.1.071 on ubuntu linux.

What can be causing this? This code is almost identical to the example in the documentation. I also tried Erode3x3 and the in-place variant with no success.

Is this a bug or am I doing something wrong here?? Please take a look at the code here below.

best regards,
Saevar

[bash]#include

int main(){

IppiSize roiSize = {7,7};
Ipp8u pMask[3*3] = {1,1,1,
 1,1,1,
                     1,1,1};
IppiSize maskSize = {3,3};
IppiPoint anchor = {1,1};
Ipp8u pSrc[7*7] = {0,0,0,0,0,0,0,
                   0,0,0,1,0,0,0,
                   0,0,1,1,1,0,0,
                    0,1,1,1,1,1,0,
                   0,0,1,1,1,0,0,
                   0,0,0,1,0,0,0,
                   0,0,0,0,0,0,0};
int srcStep = 7;
int dstStep = 7;
Ipp8u pDst[7*7];
int dstSize = 7;

IppStatus thestatus = ippiErode_8u_C1R(pSrc,srcStep,pDst,dstStep,roiSize,pMask,maskSize,anchor);
printf(ippGetStatusString(thestatus));

return 1;
}[/bash]

[saevarg123]

I found out the problem. It was a border-problem, that is, I needed to copy the image to a slightly larger image with borders. That way, I can apply erode, or any other function that uses neighbouring pixels.

[Vladimir_Dudnik]

That's right. We're glad you find solution.

Vladimir