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.
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.