If you want to understand all the features in Master PDF Editor, you can refer to the manual, which comes as a PDF or online. The installation stores the Tesseract data locally on the hard drive, regardless of whether the files already exist in a system global installation under /usr/share/tessdata/, resulting in data redundancy. Many OCR tools use a more-or-less intelligent spell checker that warns the user if many errors occur this feature is missing in Master PDF Editor. The results indicated much room for improvement.
However, the OCR routine should have identified these problems and correctly scanned OCR text. The original presented a challenge to the system: The text was not on a white background, the paper of the original was slightly wavy, and the printing was of moderate quality. Although the scanner used for this test had a resolution of up to 600dpi, the results were not convincing.
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