Barrier Access Control Using Sensors Platform and Vehicle License Plate Characters Recognition

The paper proposes a sensors platform to control a barrier that is installed for vehicles entrance. This platform is automatized by image-based license plate recognition of the vehicle. However, in situations where standardized license plates are not used, such image-based recognition becomes non-tr...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2019-07, Vol.19 (13), p.3015
Main Authors: Ullah, Farman, Anwar, Hafeez, Shahzadi, Iram, Ur Rehman, Ata, Mehmood, Shizra, Niaz, Sania, Mahmood Awan, Khalid, Khan, Ajmal, Kwak, Daehan
Format: Article
Language:English
Subjects:
Access control
Automatic vehicle identification systems
barrier control
features extraction
Fonts
license plate recognition
License plates
machine learning algorithms
Optical character recognition
raspberry-pi
Sensors
sensors platform
vehicle detection
Vehicle identification
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Summary:The paper proposes a sensors platform to control a barrier that is installed for vehicles entrance. This platform is automatized by image-based license plate recognition of the vehicle. However, in situations where standardized license plates are not used, such image-based recognition becomes non-trivial and challenging due to the variations in license plate background, fonts and deformations. The proposed method first detects the approaching vehicle via ultrasonic sensors and, at the same time, captures its image via a camera installed along with the barrier. From this image, the license plate is automatically extracted and further processed to segment the license plate characters. Finally, these characters are recognized with the help of a standard optical character recognition (OCR) pipeline. The evaluation of the proposed system shows an accuracy of 98% for license plates extraction, 96% for character segmentation and 93% for character recognition.
ISSN:1424-8220
1424-8220
DOI:10.3390/s19133015