Robust Korean License Plate Recognition Based on Deep Neural Networks

With the rapid rise of private vehicles around the world, License Plate Recognition (LPR) plays a vital role in supporting the government to manage vehicles effectively. However, an introduction of new types of license plate (LP) or slight changes in the LP format can break previous LPR systems, as...

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Main Authors: Hanxiang Wang, Yanfen Li, L.-Minh Dang, Hyeonjoon Moon
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/21/12/4140
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author Hanxiang Wang
Yanfen Li
L.-Minh Dang
Hyeonjoon Moon
author_facet Hanxiang Wang
Yanfen Li
L.-Minh Dang
Hyeonjoon Moon
author_sort Hanxiang Wang
collection DOAJ
description With the rapid rise of private vehicles around the world, License Plate Recognition (LPR) plays a vital role in supporting the government to manage vehicles effectively. However, an introduction of new types of license plate (LP) or slight changes in the LP format can break previous LPR systems, as they fail to recognize the LP. Moreover, the LPR system is extremely sensitive to the conditions of the surrounding environment. Thus, this paper introduces a novel deep learning-based Korean LPR system that can effectively deal with existing challenges. The main contributions of this study include (1) a robust LPR system with the integration of three pre-processing techniques (defogging, low-light enhancement, and super-resolution) that can effectively recognize the LP under various conditions, (2) the establishment of two original Korean LPR approaches for different scenarios, including whole license plate recognition (W-LPR) and single-character license plate recognition (SC-LPR), and (3) the introduction of two Korean LPR datasets (synthetic data and real data) involving a new type of LP introduced by the Korean government. Through several experiments, the proposed LPR framework achieved the highest recognition accuracy of 98.94%.
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spelling doaj.art-0e83e13aa655463f9d8e057f841c9ad42023-11-22T00:23:35ZengMDPI AGSensors1424-82202021-06-012112414010.3390/s21124140Robust Korean License Plate Recognition Based on Deep Neural NetworksHanxiang Wang0Yanfen Li1L.-Minh Dang2Hyeonjoon Moon3Department of Computer Science and Engineering, Sejong University, Seoul 143-747(05006), KoreaDepartment of Computer Science and Engineering, Sejong University, Seoul 143-747(05006), KoreaDepartment of Computer Science and Engineering, Sejong University, Seoul 143-747(05006), KoreaDepartment of Computer Science and Engineering, Sejong University, Seoul 143-747(05006), KoreaWith the rapid rise of private vehicles around the world, License Plate Recognition (LPR) plays a vital role in supporting the government to manage vehicles effectively. However, an introduction of new types of license plate (LP) or slight changes in the LP format can break previous LPR systems, as they fail to recognize the LP. Moreover, the LPR system is extremely sensitive to the conditions of the surrounding environment. Thus, this paper introduces a novel deep learning-based Korean LPR system that can effectively deal with existing challenges. The main contributions of this study include (1) a robust LPR system with the integration of three pre-processing techniques (defogging, low-light enhancement, and super-resolution) that can effectively recognize the LP under various conditions, (2) the establishment of two original Korean LPR approaches for different scenarios, including whole license plate recognition (W-LPR) and single-character license plate recognition (SC-LPR), and (3) the introduction of two Korean LPR datasets (synthetic data and real data) involving a new type of LP introduced by the Korean government. Through several experiments, the proposed LPR framework achieved the highest recognition accuracy of 98.94%.https://www.mdpi.com/1424-8220/21/12/4140Korean license plate recognitionimage preprocessingdeep learning
spellingShingle Hanxiang Wang
Yanfen Li
L.-Minh Dang
Hyeonjoon Moon
Robust Korean License Plate Recognition Based on Deep Neural Networks
Sensors
Korean license plate recognition
image preprocessing
deep learning
title Robust Korean License Plate Recognition Based on Deep Neural Networks
title_full Robust Korean License Plate Recognition Based on Deep Neural Networks
title_fullStr Robust Korean License Plate Recognition Based on Deep Neural Networks
title_full_unstemmed Robust Korean License Plate Recognition Based on Deep Neural Networks
title_short Robust Korean License Plate Recognition Based on Deep Neural Networks
title_sort robust korean license plate recognition based on deep neural networks
topic Korean license plate recognition
image preprocessing
deep learning
url https://www.mdpi.com/1424-8220/21/12/4140
work_keys_str_mv AT hanxiangwang robustkoreanlicenseplaterecognitionbasedondeepneuralnetworks
AT yanfenli robustkoreanlicenseplaterecognitionbasedondeepneuralnetworks
AT lminhdang robustkoreanlicenseplaterecognitionbasedondeepneuralnetworks
AT hyeonjoonmoon robustkoreanlicenseplaterecognitionbasedondeepneuralnetworks