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An improved license plate extraction technique based on gradient and prolonged Haar wavelet analysis

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C. Paunwala,

S. PatnaikAuthors Info & Claims

ICWET '10: Proceedings of the International Conference and Workshop on Emerging Trends in Technology

Pages 618 - 622

https://doi.org/10.1145/1741906.1742047

Published: 26 February 2010 Publication History

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Abstract

In a vehicle license plate extraction system, plate region detection is the key step before the final recognition. This paper presents a license plate detection algorithm from complex background based on gradient analysis and prolonged haar wavelet transform. First the license plate region is approximately detected using gradient analysis and top hat transformation of horizontal projection by choosing appropriate threshold. Accurate detection is obtained using multi resolution feature of candidates by using prolonged haar wavelet transformation. Due to the limitation of haar wavelet, we use expanded version of it to get better location of license plate without using morphological operations. Finally, accurate vertical position of license plate is detected and license plate is extracted from image. The test images taken from various scenes were employed, including diverse angles, different lightening conditions. The experiments shows that proposed method can quickly and correctly detect the region of license plate.

References

[1]

Christos-Nikolaos E. Anagnostopoulos, Ioannis E. Anagnostopoulos, Ioannis D. Psoroulas, Vassili Loumos, and Eleftherios Kayafas 2008 License Plate Recognition From Still Images and Video Sequences: A Survey IEEE transactions on intelligent transportation systems, vol. 9, no. 3, pp. 377--391

Digital Library

Google Scholar

[2]

H. J. Lee, S.-Y. Chen, and S.-Z. Wang 2004 Extraction and recognition of license plates of motorcycles and vehicles on highways in Proc. ICPR, pp. 356--359

Digital Library

Google Scholar

[3]

H. J. Wang, X. N. Wang, and W. J. Li. 2007 Color prior knowledge-based license plate location algorithm IEEE Second Workshop on Digital Media and its Application in Museum & Heritage, Vol. 6, pp 43--52

Digital Library

Google Scholar

[4]

M. Mokji, S. A. R. Abu-Bakar 2004 Fingerprint Matching Based on Directional Image Constructed using Expanded Haar Wavelet Transform, International Conference on Computer Graphics, Imaging and Visualization, pp:149--152

Digital Library

Google Scholar

[5]

N. Otsu, 1979, A Threshold Selection Method from Gray-Level Histograms, IEEE Trans. Sys., Man and Cybernetics, Vol. SMC-9, No. 1, pp. 62--66

Google Scholar

[6]

P. V. Suryanarayana, Suman K. Mitra, Asim Banerjee and Anil K. Roy 2005, A Morphology Based Approach for Car License Plate Extraction, IEEE Indicon 2005 Conference, vol.-1, pp: 24--27

Google Scholar

[7]

R. Zunino and S. Rovetta, 2000, Vector quantization for license-plate location and image coding, IEEE Trans. Ind. Electron., vol. 47, no. 1, pp. 159--167

Crossref

Google Scholar

[8]

R. C. Gonzalez, R. E. Woods 2006, Digital Image Processing, PHI, second edd

Digital Library

Google Scholar

[9]

S. Mallat, 1993, A theory for multi-resolution signal decomposition: the wavelet representation, IEEE Trans actions on Pattern Analysis and Machine Intelligence, Vol. 11, No. 7, pp. 674--693

Digital Library

Google Scholar

[10]

Tran Duc Duan, Duong Anh Duc, Tran Le Hong Du, 2004, Combining Hough Transform and Contour Algorithm for detecting Vehicles' License-Plates, Intelligent Multimedia, Video and Speech Processing, pp: 747--750

Google Scholar

[11]

Weijuan Wen, Xianglin Huang, Lifang Yang, Zhao Yang, Pengju Zhang, "The Vehicle License Plate Location Method Based-on Wavelet Transform", International Joint Conference on Computational Sciences and Optimization, pp:381--384, 2009

Digital Library

Google Scholar

[12]

http://www.medialab.ntua.gr/research/LPRdatabase.html

Google Scholar

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Arora ASaluja DParmar NGoyal DSenthil V(2021)Automatic number plate detection and un-manned challan generation for the odd/even rules in DelhiMaterials Today: Proceedings10.1016/j.matpr.2020.11.650Online publication date: Jan-2021
https://doi.org/10.1016/j.matpr.2020.11.650
Panchal TPatel HPanchal A(2016)License Plate Detection Using Harris Corner and Character Segmentation by Integrated Approach from an ImageProcedia Computer Science10.1016/j.procs.2016.03.05479(419-425)Online publication date: 2016
https://doi.org/10.1016/j.procs.2016.03.054
Huili Han Runping Han (2011)Method of license plate location based on edge detection and color informationProceedings 2011 International Conference on Transportation, Mechanical, and Electrical Engineering (TMEE)10.1109/TMEE.2011.6199487(1477-1480)Online publication date: Dec-2011
https://doi.org/10.1109/TMEE.2011.6199487

Index Terms

An improved license plate extraction technique based on gradient and prolonged Haar wavelet analysis
1. Computing methodologies
  1. Machine learning

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Published In

ICWET '10: Proceedings of the International Conference and Workshop on Emerging Trends in Technology

February 2010

1070 pages

ISBN:9781605588124

DOI:10.1145/1741906

Program Chair:
B. K. Mishra

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Published: 26 February 2010

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ICWET '10: International Conference and Workshop on Emerging Trends in Technology

February 26 - 27, 2010

Maharashtra, Mumbai, India

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Arora ASaluja DParmar NGoyal DSenthil V(2021)Automatic number plate detection and un-manned challan generation for the odd/even rules in DelhiMaterials Today: Proceedings10.1016/j.matpr.2020.11.650Online publication date: Jan-2021
https://doi.org/10.1016/j.matpr.2020.11.650
Panchal TPatel HPanchal A(2016)License Plate Detection Using Harris Corner and Character Segmentation by Integrated Approach from an ImageProcedia Computer Science10.1016/j.procs.2016.03.05479(419-425)Online publication date: 2016
https://doi.org/10.1016/j.procs.2016.03.054
Huili Han Runping Han (2011)Method of license plate location based on edge detection and color informationProceedings 2011 International Conference on Transportation, Mechanical, and Electrical Engineering (TMEE)10.1109/TMEE.2011.6199487(1477-1480)Online publication date: Dec-2011
https://doi.org/10.1109/TMEE.2011.6199487

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A sliding window technique for efficient license plate localization based on discrete wavelet transform

Research on License Plate Recognition Based on Deep Learning in Complex Scenarios

License Plate Detection Based on Expanded Haar Wavelet Transform

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A sliding window technique for efficient license plate localization based on discrete wavelet transform

Research on License Plate Recognition Based on Deep Learning in Complex Scenarios

License Plate Detection Based on Expanded Haar Wavelet Transform

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