Detail výsledku

Unconstrained License Plate Detection in Hardware

JURÁNEK, R.; MUSIL, P.; ZEMČÍK, P. Unconstrained License Plate Detection in Hardware. In Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems - VEHITS. Praha: SciTePress - Science and Technology Publications, 2021. p. 13-21. ISBN: 978-989-758-513-5.
Typ
článek ve sborníku konference
Jazyk
anglicky
Autoři
Abstrakt

In this paper, we propose an FPGA implementation of license plate detection (LPD) in images captured by arbitrarily placed cameras, vehicle-mounted cameras, or even handheld cameras. In such images, the license plates can appear in a wide variety of positions and angles. Thus we cannot rely on a-priori known geometric properties of the license plates as many contemporary applications do. Unlike the existing solutions targeted for DSP, FPGA or similar low power devices, we do not make any assumptions about license plate size and orientation in the image. We use multiple sliding window detectors based on simple image features, each tuned to a specific range of projections. On a dataset captured by a camera mounted on a vehicle, we show that detection rate is 98 % (and 98.7 % when combined with video tracking). We demonstrate that our FPGA implementation can process 1280×1024 pixel image at over 40 FPS with a minimum width of detected license plates approximately 100 pixels. The FPGA block is fully functional and it is intended to be used in a smart camera to parking control in residential zones.

Klíčová slova

ALPR, Soft Cascade, Decision Trees, WaldBoost

Rok
2021
Strany
13–21
Sborník
Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems - VEHITS
Konference
7th International Conference on Vehicle Technology and Intelligent Transport Systems
ISBN
978-989-758-513-5
Vydavatel
SciTePress - Science and Technology Publications
Místo
Praha
DOI
UT WoS
000783439200001
EID Scopus
BibTeX
@inproceedings{BUT175774,
  author="Roman {Juránek} and Petr {Musil} and Pavel {Zemčík}",
  title="Unconstrained License Plate Detection in Hardware",
  booktitle="Proceedings of the 7th International Conference on Vehicle Technology and Intelligent Transport Systems - VEHITS",
  year="2021",
  pages="13--21",
  publisher="SciTePress - Science and Technology Publications",
  address="Praha",
  doi="10.5220/0010174000130021",
  isbn="978-989-758-513-5"
}
Projekty
Výzkumné skupiny
Pracoviště
Nahoru