NDLI: Accurate license plate localization

Content Provider	IEEE Xplore Digital Library
Author	Roomi, S.M.M. Anitha, M. Bhargavi, R.
Copyright Year	2011
Description	Author affiliation: Department of ECE, Thiagarajar College of Engineering Madurai, India (Roomi, S.M.M.; Anitha, M.; Bhargavi, R.)
Abstract	Vehicle license plate identification system is an image-processing technology used to identify vehicles by their license plates. This technology is used in various security and traffic applications. This data is also used for enforcement, data collection, and can be used to keep a time record on the entry or exit of vehicles for automatic payment calculations. The significant advantage of this system is that it can keep an image record of the vehicle which is useful in order to fight crime and fraudulance. The key step in a vehicle license plate identification system, is plate region localization. This paper presents a new method to detect the location of license plate. The proposed algorithm consists of two main modules: license plate region's rough detection and accurate localization of region of interest(ROI). ROI is roughly estimated by vertical gradients. Rough ROI is utilized to obtain accurate ROI with the advent of DWT and morphological operations. The proposed method applies vertical subband feature of 2D discrete wavelet transform (DWT) to significantly highlight the vertical edges of license plates and suppress the surrounding background noise. Then, license plates can be extracted and located by the orthogonal projection histogram analysis with morphological operation. The proposed method can extract license plate of various vehicles both front and back. The experimental results show that the proposed method can achieve good license plate localization results with short runtime and high accurate detection rate.
Starting Page	92
Ending Page	97
File Size	770981
Page Count	6
File Format	PDF
ISBN	9781424493937
e-ISBN	9781424493944
DOI	10.1109/ICCCET.2011.5762445
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-18
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Histograms Wavelets Histogram Image color analysis Image edge detection Licenses Feature extraction License plate localization Pixel Morphological processing Vehicles
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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