Abstract: A method for reading license plate numbers (14) by means of OCR in a road network (1), comprising: recording an image of a license plate number (14) at a first location (A1 ) in the road network (1), OCR-reading a license plate character string (16) in the image recording (15), and storing an OCR data set (19'j) in a database (11); recording an image of a license plate number (14) at a second location (Be) in the road network (1), OCR-reading a license plate number character string (16) in the image recording (15), and generating a current OCR data set (19"); and, if at least one confidence measure (Cjn, OC ) of the current OCR data set (19") falls below a first minimum confidence value (Cmin,1), selecting at least one stored OCR data set (19'j) from the database (11), the license plate number image recording (15) of which OCR data set has a similarity (0S±, OW) that exceeds a minimum similarity value (Smin) and/or has the greatest respective similarity (OS±, OW) to the license plate number image recording (15) of the current OCR data set (19"), and using the at least one selected OCR data set (19'j) for improving the license plate number character string (16) of the current OCR data set (19"). CNj I0C) <11 co N-I (0 co co Ik CY) co <1 N- 01 C(Y0
Method for reading vehicle identifications
2017-08-31
Patent
Elektronische Ressource
Englisch
The promise of automatic vehicle identifications
Tema Archiv | 1977
|Security, Privacy, Identifications
Springer Verlag | 2012
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