wow.... what can I say... That'd be so amazingly cool if you could create such a tool. I'd be very greatful - I'm sure many others would too once they see the potential for such a thing.
Regarding the format - a dump to text. To be honest, I don't have the technical ability to translate that into a format I'd be able to use in a 3D app... such as a bitmap. I am actually learning C++ at the moment, so maybe with a bit of research I could figure something out to translate such a text file into a basic bitmap.
Really - saving out could be handled by Painter, if you could extract directly to an 8bit/256-greyscale image right into Painter.... or the windows clip-board, that'd be the most practical thing I could imagine.
Thanks for the interest! Gives me hope!