tesseract is fine for basic use cases, but it fails when the image is tilted (and thus the text isn't laid out horizontally), which can happen several times with scanned books. Compared to how well the Google OCR engine works, tesseract should be much better than it is.
I wonder how difficult it is to develop a better OCR engine than tesseract.
I wonder how difficult it is to develop a better OCR engine than tesseract.