OCR 6s and 9s

Discussions about machine vision support in GdPicture.
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kpejr
Posts: 10
Joined: Fri Aug 19, 2011 9:46 pm

OCR 6s and 9s

Post by kpejr » Thu Nov 15, 2012 7:18 pm

I am trying to OCR a bunch of post cards that have a database ID. The printer used a small font. Is there anything I can try to keep 6s and 9s from being read as 8s. See the attached image, I'm tring to read 5032166 and I'm getting 5032186.

Thanks
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PostCard.tif
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SamiKharma
Posts: 352
Joined: Tue Sep 27, 2011 11:47 am

Re: OCR 6s and 9s

Post by SamiKharma » Tue Nov 20, 2012 10:30 am

Hi,

The image you attached is REALLY poor quality. Though it is 300 dpi, it contains an image taken at a much lower dpi inside it and that is what you are trying to recognize.
You can use FxBitonalDilate8 and it will recognize the number, but that will also bring up all the noise, which will also be recognized as faulty characters. Any subsequent trial to reduce the noise will only rechange the recognition.
My advise, use a better resolution image.

Best,
Sami

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