Phantom characters

[Jason Shepherd]

I'm using pytesseract and tesseract v5.3.3 to read some text from some images and I sometimes get these weird phantom characters. I've tried to do some image preprocessing like increasing the image size, erosion, thresholding, etc, but nothing seems to get rid of this random character that's spawing from nothing. Attached are two image examples (left side is processed, right is original with rect bounding boxes drawn), The blue rectangle to right of "KB PNG" is a '_' being detected even tho that space is completely blank. Any ideas on getting rid of this?

[Zdenko Podobny]

post:

1. Original image (without preprocessing)
2. + image used for OCR (preprocessed) 
3. + output from tesseract executable (not tesseract wrappers) and used parameters/option 

Otherwise, nobody can reproduce the problem and therefore suggest a solution.

Zdenko

ne 31. 12. 2023 o 10:53 Jason Shepherd <jmanshe...@gmail.com> napísal(a):

I'm using pytesseract and tesseract v5.3.3 to read some text from some images and I sometimes get these weird phantom characters. I've tried to do some image preprocessing like increasing the image size, erosion, thresholding, etc, but nothing seems to get rid of this random character that's spawing from nothing. Attached are two image examples (left side is processed, right is original with rect bounding boxes drawn), The blue rectangle to right of "KB PNG" is a '_' being detected even tho that space is completely blank. Any ideas on getting rid of this?

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