This is what Nasim wrote in his Facebook account
Digitized an Odia book (110 pages) in one day. Thank you Google OCR and Subhashish Panigrahi
It took 10 hours approx (2hr for taking photo with my mobile and image pre-processing, 2hrs for proofreading and 6hrs for formatting test). The OCR accuracy was 99.2%! Below left is raw camera image and right are the processed pages.