//EDIT...
I'm editing my question slightly to address the issue of working specifically with non-power-of-two images. I've got a basic structure that works with square grayscale images with sizes like 256x256 or 1024x1024, but can't see how to generalize to arbitrarily sized images. The fft functions seem to want you to include the log2 of the width and height, but then its unclear how to unpack the resulting data, or if the data isn't just getting scrambled. I suppose the obvious thing to do would be to center the npot image within a larger, all black image and then ignore any values in those positions when looking at the data. But wondering if there's a less awkward way to work with npot data.I'm editing my question slightly to
