Best Trained data for Non MRZ data

[Tintu Jacob]

Hi

We are trying to read national id card using tesseract and able to read mrz side of id card image. But unable to read non mrz side of card using this trained data. Could you please share which is the best trained data to read non mrz data from id cards?


Reagrds
Tintu

[ElGato ElMago]

It isn't OCRB then.  Pick your local language from the best traineddata.  You can try that first.

2019年8月21日水曜日 0時49分17秒 UTC+9 Tintu Jacob:

[Tintu Jacob]

Hi,
We tried below mentioned english trained data and ocr accuracy is less. Is any other best trained data tp read for English? Please suggest

https://github.com/tesseract-ocr/tessdata/blob/master/eng.traineddata

[Shree Devi Kumar]

Share a sample image.

If the rest of the ID is in similar type of font, try finetuning with it for all characters.

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[Tintu Jacob]

Please find sample file
https://drive.google.com/file/d/0B93Vnm9ZxkpyUnd4V0VxdUg1QmV6NGVNMWVwcFpuWGxLVjE0/view?usp=drivesdk

And we r trying only kuwait civil id card and its ocr accuracy in non mrz page(front page ) is less.

[ElGato ElMago]

What did you do and what was your result?

2019年8月23日金曜日 4時42分44秒 UTC+9 Tintu Jacob:

[Tintu Jacob]

Please find the result obtained from
tesseract

Check Nationality,dob n expiry date

<<Civil FRONT OCR Result :- >>

STATE oF KUWAIT evi no = 5%

CDN 285031504457 wat hon

Pallas La; daa ~~
Name MOHAMMAD RAHAT
ABDUL KHALIQ
ON +L yaonaity IND SA a
< b Sex " Aa so i

Burth Date 1503/1985 SA fol
EpayDate {8/0412020 LST pL

Please find the code to do ocr in tesseract

Tesseract instance = new Tesseract();
// SET THE TESSDATA PATH
instance.setDatapath(tesseractPath);
instance.setOcrEngineMode(TessOcrEngineMode.OEM_LSTM_ONLY);
instance.setLanguage("eng");
instance.setPageSegMode(TessPageSegMode.PSM_AUTO);

instance.setTessVariable("load_freq_dawg", "true");
instance.setTessVariable("load_system_dawg", "true");
instance.setTessVariable("tessedit_char_whitelist","AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz0123456789/<");

data = instance.doOCR(image);

[ElGato ElMago]

It's just an idea but tessdata_best seems to fit better than tessdata if you specify OEM_LSTM_ONLY.  Did you try that?

2019年8月26日月曜日 14時21分14秒 UTC+9 Tintu Jacob: