Symptoms
Insufficient recognition results during processing documents via FineReader Engine for Linux
Difference between OCR output comparing Windows and Linux
Cause
Linux does not have standard preinstalled fonts used in Windows and Microsoft Office, and FRE cannot reliably recognize documents consisting of these fonts.
Resolution
To resolve this issue need to add missing fonts to the target Linux machine, steps will be
1) Navigate to the Linux directory where the fonts are stored, for example, /usr/share/fonts
2) Create the directory with font name (Arial, times-new-roman, or other {font-name})
3) Copy the fonts from C:/Windows/Fonts or download them from the internet.
4) Paste the needed font to created directory in Linux (/usr/share/fonts/{font name})
Also, core Microsoft fonts can be installed with the following command:
sudo apt install ttf-mscorefonts-installer
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