Multinational Licnese Plate Recognition Using Generalized Character Sequence Detection¶
Introduction¶
Multinational ALPR is a challenging issue
The differences in license plate (LP) layouts among different countries
The non-availability of public multinational LP datasets
Materials and methods¶
Dataset¶
LPD¶
Purpose |
KarPlate (LPD) |
AOLP (AC) |
AOLP (LE) |
AOLP (RP) |
Medialab LPR |
University of Zagreb |
OpenALPR (EU) |
OpenALPR (US) |
|---|---|---|---|---|---|---|---|---|
Train |
3,417 → 30,000 |
681 |
757 |
－ |
279 → 259 |
401 |
108 |
244 |
Test |
850 |
681 |
757 |
611 |
437 → 431 |
100 |
－ |
－ |
Total |
4,267 → ? |
681 |
757 |
611 |
716 → 690 |
510 → 501 |
108 |
244 |
LPR¶
Purpose |
KarPlate (LPR) |
AOLP (AC) |
AOLP (LE) |
AOLP (RP) |
Medialab LPR |
Caltech Cars (Rear) 1999 |
University of Zagreb |
OpenALPR (EU) |
OpenALPR (US) |
|---|---|---|---|---|---|---|---|---|---|
Train |
3,417 → 60,000 |
681 |
757 |
－ |
279 → 259 |
80 |
401 |
108 |
244 |
Test |
850 |
681 |
757 |
611 |
437 → 431 |
46 |
100 |
－ |
－ |
Total |
4,267 → ? |
681 |
757 |
611 |
716 → 690 |
126 |
510 → 501 |
108 |
244 |
Reference
Multinational Licnese Plate Recognition Using Generalized Character Sequence Detection, CVPR, 2019