Way to set minimum font size to reduce errors

[John James]

Hi All

I am looking for a parameter that sets the minimum acceptable rectangle size that tesseract will interpret as a character.

 For example every character in the image has a rectangle height of 40 pixels but occasionally Tesseract recognizes a character erroneously that is 15 pixels high.

All help Appreciated

Regards 

Codger

[Dmitri Silaev]

You can try "textord_min_xheight" (in pixels). However it might not work as there are tons of possible reasons why that happens. There can be other params that could help. Show a few sample images and explain what's going wrong. Provide your command lines and Tesseract version you're using.

Best regards,
Dmitri Silaev
www.CustomOCR.com

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[B. Zaręba]

Probably not useful for the OTP anymore, but if someone else bumps here looking for anwers:

Try:

textord_old_xheight 1 #this is important

textord_min_xheight 35

Also you may find this useful:
textord_max_noise_size 18