Does IPP lib have a function can take 8 bits gray scale image, and resizeit to a 32 bits RGBA image?
Currently, I call three functions to complish it. e.g.
Chao is right; this is available in IPP 7.0. Basically this function copies a one-channel (gray scale) image to each channel of the multi-channel image.
Please refer to IPP Image processing manual and search for ippiDup_8u_C1C4R function.