CODEWITHSUNDEEP
iosocrtesseract
sumon
sumon

Reputation: 742

Limit tesseract character to a-z and number only in my iOS app

I am using tesseract for recognizing character in one of my iOS project. It is now reading all characters including alpha numeric character. But I want to read only character a-z and numbers 0-9. I followed Limit characters tesseract is looking for, but can't figure out how can I implement this in my iOS app.

Can anyone suggest me how can I implement this in my iOS project.

Upvotes: 0

Views: 6041

Answers (2)

oscarr
oscarr

Reputation: 529

Try this:

[tesseract setVariableValue:@"abcdefghijklmnopqrstuvwxyz012345789" forKey:@"tessedit_char_whitelist"];

also you can try variable "tessedit_char_blacklist"

Upvotes: 1

user18428
user18428

Reputation: 1201

You can specify the white list (allowed characters) using TessBaseAPI.SetVariable prior to extraction

 tesseract->SetVariable("tessedit_char_whitelist", "abcdefghijklmnopqrstuvwxyz012345789");

Upvotes: 7

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