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Nice stuff! I found an error in the chinese demo, with the example you provided (4th character wasn't the same). I know no OCR is perfect, but IMHO at least yo

• mkl 5y ago
  There's one in the English demo too: "hail!" -> "haill". They're both pretty bad images though. In practice I've found (command line) Tesseract very accurate on 300dpi scans of printed documents, with colour/greyscale, not binary.
• mdp2021 5y ago
  > at least your own demo should be free of errors :) That would be a dishonest demo. You try to show how well it works, not that it works perfectly well (which is false). Edit: especially since we know that OCR is hardly perfect - we expect errors to be minimized, not absent, and the first interest is to see where the engine fails.