Need a faster alternative to ippiResizeSqrPixel

[murali_523]

Hi,

  In the recent version ,Intell  IPP library dropped the sub-pixel resizing methods like resizecenter & resizeSqrPixel. 

  Only alternative is IPPIWarAffine which doesn't match the performance of the resizesqrpixel and resizecenter.

  Is there any plans to restore these methods again in future IPP versions.

Regards,

Muralidhar

[Tatyana_B_Intel]

Hi Muralidhar,

Could you please clarify your data types, channels and interpolation types? Maybe we will be able to tune parameters in order to receive better performance for your cases.

But in common we don't have any other ways for the sub-pixel resizing except WarpAffine. Probably we'll add these methods in future releases.

Thanks,

Tatyana

[murali_523]

We were using 16 bit images single channel ( most of the medical images are of 16 bit depth) and 8-bit with 4channel rgba Most of the cases we do scaling and shift with subpixel precision. Currently this is blocker for us to upgrade to latest version of ipp. We cannot compromise on performance after upgrade.

[murali_523]

We use mainly nearest, bilinear and bi cubic interpolation types. In future we thought of extending to super sampling for some other cases