This is Santhosh working for Image Processing Product and we use intel IPP library for the achieving the interpolation of images.
We are currently using intel IPP API "ippiResize_8u_C1R" for bi-cubic interpolation, but we observed a stair step in the edges after applying the same as shown in the attached screenshot.
Please let us know if any issue has been identified in this area and any fixes/workaround has been found for the same.
Version : IPP 7.1
Method : ippiResize_8u_C1R
Thanks & Regards,