I'm running warp perspective, it's seems like boarder type: ippBorderConst is not working,
The function operate as ippBorderInMem, out of border pixels don't set to a constant value.
I'm working with: Ipp version 2017, update 3. windows 64bit.
ippBorderInMem always has priority over any other border flags or types, if you would like to some part for const, and some parts for in-memory value, please use sub flags of ippBorderInMem , for example, borderType = ippBorderInMemTop|ippBorderInMemBottom|ippBorderConst , only top and bottom will be set as in-memory source image value, both right and left will be set as const. Thanks.