topic Re: Problem with ippiResizeSqrPixel in Intel® Integrated Performance Primitives

Problem with ippiResizeSqrPixel

postaquestion — Fri, 23 Feb 2007 01:25:30 GMT

I use

st = ippiResizeSqrPixel_32f_C1R(m_storage, sz, m_wstep, srcroi, m_storage, m_wstep, dstroi, 1.0, 1.0, 0.0, 0.0, IPPI_INTER_LINEAR, pBuffer);

since the xfactor, yfactor are 1.0, the image should not be changed. actually it is not.

but if I use IPPI_INTER_NN, or CUBIC, LANCSOZ, the results are correct. Do you have any idea?

The image size is 10x10.

Thanks

Re: Problem with ippiResizeSqrPixel

Ying_S_Intel — Tue, 27 Feb 2007 21:11:12 GMT

What version of Intel IPP did you use? Can you send us your test file along with image file so we can verify it?

Thanks,
Ying S
Intel IPP Support

Re: Problem with ippiResizeSqrPixel

postaquestion — Tue, 27 Feb 2007 22:11:58 GMT

Iused version 5.2 beta.

the image is quite simple

1 2 3 4 5 6 7 8 9 10
11 12 13 14 15...
..
..99

it is a sequence from 1 to 99.

Ifound other problems.

The resizing function can't be in-place,I mean the input buffer and output buffer are the same. Doyou use temporary buffer during the computation?

The cubic interpolation generated a runtime error if the oringinal image size is 3680x4752, the rescaled image is 500x4752. the xfactor is 0.135869 and yfactor is 1.0. Canyou test on that image?Or isthe xfactor not correct?

Thanks a lot.

Re: Problem with ippiResizeSqrPixel

Vladimir_Dudnik — Fri, 02 Mar 2007 17:01:03 GMT

Hello,

regarding runtime error, we confirm that there is an issue in IPP 5.2 beta optimized code. We will fix this issue in IPP 5.2 final release which is targeted sometime in Q2 2007

Regards,
Vladimir

Re: Problem with ippiResizeSqrPixel

Intel_Software_Netw1 — Tue, 29 May 2007 21:07:53 GMT

Hello,

This issue has been fixed in IPP 5.2 Gold.

Regards,

Gina B.
Intel Software Network Support
http://www.intel.com/software
email: ISN.support@intel.com

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