Dear Neo Song, Did you apply any revision on SWT, and how? I tried the algorithm for your image sample 1.jpg and 2.jpg, the output image lost most of the digits' contour, how could you use it for OCR input? The attachments are the result images I got by the SWT implementation you provided (https://github.com/aperrau/DetectText). Thanks!
BR Guanghua 在 2012年11月20日星期二UTC+8上午1时07分28秒，Neo Song写道： > > 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
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