Try to put a difusion filter on the flash (speedlite or something like that), and better with 3 or 4 flash sources from diferents angles, I've seeing your images and I think that has bad options with soft processing.
El lunes, 19 de noviembre de 2012 18:07:28 UTC+1, Neo Song escribió: > > Dear All, > I am now needing to OCR the embossing characters on the bank card. > These characters are in two kind of font. The first one is Farrington 7B, > which is used to present the account number, and another font is > unknown(maybe bank-dependent) and is used to present card holder name, card > issue time and card serial number. > Now the problem is the embossing characters are very difficult to OCR > since they will be very bright under special light. While if the extra > light is not applied, the card background will largely affect these > characters, and will cause error. > I have uploaded two images. The first sample image shows that improper > light applied will cause the characters to be dark/light mixed and OCR > result is very bad. The second image shows that a better light will make > the background dark and embossing characters very sharp, while the OCR > result is a little bit better, but still not good enough. > Can anybody give me some advice on the light applied, or image > pre-processing technique to improve the OCR result? Thank you all! > > > <https://lh5.googleusercontent.com/-YH-MqsJ4pVg/UKpm8nAYDzI/AAAAAAAAAAg/39dydvF5nWY/s1600/1.jpg> > > > <https://lh3.googleusercontent.com/-LbKuKrWafT4/UKpnK6qpOAI/AAAAAAAAAAo/gGLCxfGT1E8/s1600/2.jpg> > > > > <https://lh5.googleusercontent.com/-YH-MqsJ4pVg/UKpm8nAYDzI/AAAAAAAAAAg/39dydvF5nWY/s1600/1.jpg> > -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en
