Suppose I have an 3 channel 640x480 image. For masked operation on 3-channel images (e.g. ippiCopy_8u_C3R), what size does the mask need to be? From my experiments, it seems like it needs to be 1920x1440 for ippiCopy_8u_C3R to work. In other words there are 3 mask pixels corresponding to each pixel, one mask value for each color channel. My expectation would be that the mask is a 640x4801 channel image for a 640x480 3 channel image, one mask value for every RGB triple.
