This is a longshot and may be wrong, but as I didn’t find the other replies here (nor on Reddit, where a similar question was asked) satisfying, I did some digging and found this paper that relates to something called CARAFE, which seems as though it may fit as it relates to image processing and improving image resolution.

Although arrafe or arafe have dropped the c, perhaps it still relates to this? That seems to make more sense at least in terms of image generation, and maybe in descriptions it’s meant to indicate that this was used, like to improve the quality or something. For anyone interested, the paper linked to isn’t paywalled, so you can check it out and see if this makes sense in context.

From my limited knowledge of this subject, I think it does, but 🤷‍♀️