traineddata for MRZ using OCR-B fonts
This is a proof of concept traineddata
in response to this post in tesseract-ocr forum
Feel free to clone the repo and rerun training with your own custom training_text and fonts.
Retrained to add missing X
using 3 OCRB fonts and a larger training text compared to previous version.
Both float/best and integer/fast versions are provided.
(800 iterations - char train=0.273%, word train=3.47%, word train=0%)
- Download best version - 10.8 MB. use with
-l ocrb. - Download fast version - 1.38 MB. use with
-l ocrb_int.
ocrb_eval folder has synthetic MRZ samples in the same 3 fonts for evaluation. The box/tiff pairs are also saved.
- lstmeval of the files with
tessdata_best/enggives Eval Char error rate=44.954738, Word error rate=89.583333. - lstmeval of the files with
ocrbandocrb_intgives Eval Char error rate=0, Word error rate=0.
tesseract ./ocrb_eval/eng.OCR-B_10_BT.exp0.tif - -l ocrb --tessdata-dir ./
Failed to load any lstm-specific dictionaries for lang ocrb!!
Page 1
P<EURJOSE<<POLLY<<<<<<<<<<<<<<<<<<<<<<<<<<<<
IDAUT10000999<6<<<<<<<<<<<<<<<
3178087440GBR6502230M1810301<<<<<<<<<<<<<<02
IDCHE123456789C791217C891201CC
L898902C<3UZB6908061F9406236ZE184226B<<<<<14
D231458907WLF7408122F1204159<<<<<<<6
V<KQTPAPANDROPOULOUS<<STEPHEN<TREVOR<<<<<<<<
P<INDVARMA<<NATHU<RAO<GODSE<SHARMA<<<<<<<<<<
P<GUYGLADYS<ALMETA<<<<<<<<<<<<<<<<<
IDEBD<ALEZYZ<BN<MTEB<<<<<<<<<<<<<<<<<<<<<
6754505660GBR6006163M2012296<<<<<<<<<<<<<<08
0504933705ITL7307144F1601013<<<<<<<<<<<<<<06
AA00000000POL6002084F1412314<<<<<<<<<<<<<<<4
7553279419RUS8712242M2104131<<<<<<<<<<<<<<02
P<ROMJOHNSON<<ANNE<QUEEN<<<<<<<<<<<<<<<<<<<<
P<IRNKHOSRAVANI<<MAHBOD<<<<<<<<<<<<<<<<<<<<<
There are other github repos with MRZ solutions (I have not tried them).