topic Sumit, in Intel® Integrated Performance Primitives

median filter issue using ipp 2017 and ipp7

sumit_j_ — Thu, 10 Aug 2017 09:14:32 GMT

Hi All,

I have been using Ipp7 -median filter with SetBorderMirror and my filtered image was bit matching with matlab medfilt2 (symmetric padding).

Now I am switching to IPP2017 my observation is weird.

Ipp7 -median filter for 8U image -with SetBorderMirror is different from Ipp2017 -median filter (api is in legacy) for same SetBorderMirror.

But Ipp7 -median filter for 8U image -with SetBorderReplicate is bit exact with IPP2017 median filter with SetBorderMirror. Also, both of them is matching with matlab medfilt2 ( zero padding).

Plz suggest what is the reason behind this any major change in enum list.

Regards,

Sumit jha

Hi,

Shaojuan_Z_Intel — Thu, 10 Aug 2017 23:06:23 GMT

Hi,

How big difference is it between IPP 7 and IPP 2017 when parameter is SetBorderMirror? For floating point numbers, there could be slightly different results for different memory alignment. Please take a look at here https://software.intel.com/en-us/mkl-macos-developer-guide-obtaining-numerically-reproducible-results for more information. Thanks!

Sumit,

Chao_Y_Intel — Thu, 07 Sep 2017 08:27:01 GMT

Sumit,

Could you provide you test code, and submit an issue into our support page:
http://www.intel.com/supporttickets

We can have further check on this problem?

regards,
Chao