The two-parameter family of cubic filters have kernels of the form:
where B and C are two parameters; their variations give different approximation. The Intel IPP function ippiResizeSqrPixel uses three members of this family, specifically cubic B-spline (B=1, C=0), Catmull-Rom spline (B=0, C=1/2), and special filter with B=1/2, C=3/10.
These interpolation methods additionally filter the output to improve quality of an image.