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From your experience, what is the most accurate open-source Optical Character Recognition (OCR) library/software to read Japanese text?
I just tried nhocr, its mistake rate is over 2% even on an extremely clean high-definition document.
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Google does well on the scanned email and recognizes the text in the smartphone-captured document similarly well as ABBYY. However it is much better than Tesseract or ABBYY in recognizing handwriting, as the second result image shows: still far from perfect, but at least it got some things right.
While Tesseract is known as one of the most accurate free OCR engines available today, it has numerous limitations that dramatically affect its performance; its ability to correctly recognize characters in a scan or image.
Based on the lack of answers it sounds like nhocr IS the most accurate open-source OCR for Japanese.
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