topic Re: To get IPP documentation example working in Intel® Integrated Performance Primitives

To get IPP documentation example working

Artem_Y_Intel — Wed, 08 Oct 2008 05:57:23 GMT

Hi, All.

I try to get IPP documentation Wiener filtering example working.

Ipp32f pSrc[256*256];

Ipp32f pDst[256*256];

int srcStep = 256*sizeof(Ipp32f);

int dstStep = 256*sizeof(Ipp32f);

IppiSize roiSize = {256, 256};

IppiSize dstRoiSize = {256, 256};

IppiSize maskSize = {3, 3};

int pBufferSize;

int channels = 1;

unsigned int pSeed = 3;

IppiPoint anchor = {1, 1};

Ipp32f noise[1] = {0.5};

ippiImageJaehne_32f_C1R(pSrc, srcStep, roiSize); // source image

//source image + RandUniform noise

ippiAddRandUniform_Direct_32f_C1IR(pSrc, srcStep, roiSize, 0, 1, &pSeed);

ippiFilterWienerGetBufferSize( dstRoiSize, maskSize, channels, &pBufferSize);

Ipp8u* pBuffer = ippsMalloc_8u(pBufferSize);

ippiFilterWiener_32f_C1R( pSrc, srcStep, pDst, dstStep, dstRoiSize, maskSize, anchor, noise, pBuffer);

ippsFree(pBuffer);

After executing this code under Linux on Intel Xeon CPU L5408 @ 2.13GHz , IPP ver. 6.0.0.045 pDst buffer contains NAN values.

Is there anything I am doing wrong? Any help would be appreciated.

Regards,

Artem

Re: To get IPP documentation example working

Ying_S_Intel — Fri, 10 Oct 2008 06:23:59 GMT

Try this one, we will change the example code in manual for next release.

Thanks,
Ying

#include "stdio.h"

#include "ipp.h"

int main()

{

IppStatus stat = ippStsNoErr;

int length = 256*256;

Ipp32f pSrc[256*256];

Ipp32f *pSrcW;

Ipp32f pDst[256*256];

int srcStep = 256*sizeof(Ipp32f);

int dstStep = 256*sizeof(Ipp32f);

IppiSize roiSize = {256, 256};

IppiSize maskSize = {3, 3};

IppiSize dstRoiSize = {256-maskSize.width, 256-maskSize.height};

int pBufferSize;

int channels = 1;

unsigned int pSeed = 3;

IppiPoint anchor = {1, 1};

Ipp32f noise[1] = {0.0};

Ipp8u* pBuffer;

stat = ippiImageJaehne_32f_C1R(pSrc, srcStep, roiSize);

if( stat != ippStsNoErr ){

printf (" ERROR !!! n");

return 1;

}

stat = ippiFilterWienerGetBufferSize( dstRoiSize, maskSize, channels, &pBufferSize);

if( stat != ippStsNoErr ){

printf (" ERROR !!! n");

return 1;

}

stat = ippsSet_32f( 1.0, pDst, length );

pBuffer = ippsMalloc_8u(pBufferSize);

pSrcW = (Ipp32f*)((Ipp8u*)pSrc + (maskSize.height - 1 - anchor.y ) * srcStep + (maskSize.width - 1 - anchor.x ) * sizeof(Ipp32f) );

stat = ippiFilterWiener_32f_C1R( pSrcW, srcStep, pDst, dstStep, dstRoiSize, maskSize, anchor, noise, pBuffer);

if( stat != ippStsNoErr ){

printf (" ERROR !!! n");

return 1;

}

ippsFree(pBuffer);

return 0;

}// __main__

Re: To get IPP documentation example working

Artem_Y_Intel — Tue, 14 Oct 2008 09:15:41 GMT

Thank you. That's one works correct.

Regards,

Artem