I suppose I should add this regarding OCR--while I wouldn't trust any OCR without manual correction, and I am unqualified to do this manual correction for Japanese and Chinese text, I do feel confident that I could manage it (albeit very slowly) for Thai, because it uses an alphabet and diacritics with a much more manageable number of permutations. I've even managed to transcribe a few lines myself entirely by hand before it got way too frustrating (my process for combining diacritics was pretty clunky).

So if anyone's sitting on a copy of FineReader, I'm sure we could make some use of it for this project.