NUMBER PLATE RECOGNITION USING OPENCV

Registration ID: IJNRD_217260

Published ID: IJNRD2404106

: Click Here to Get

About Hard Copy and Transparent Peer Review Report

P. Vinay, G. Rajesh, K. Bhanu Prasad, B. Naveen Kumar, C. Vinay Sai

Keywords: Number Plate Recognition, OpenCV, Python, Optical Character Recognition (OCR), License Plate Detection, Image Processing, Computer Vision, k-Nearest Neighbors Algorithm (k-NN), Machine Learning, Pattern Recognition, Automatic Toll Collection, Traffic Management, Intelligent Traffic Systems.

With the popularization of automobile and the progress of computer vision detection technology, intelligent plate detection technology has gradually become an important part of intelligent traffic management. Plate detection is used to segment vehicle image and obtain license plate area for follow-up recognition system to screen. It is widely used in intelligent traffic management, vehicle video monitoring and other fields. In this paper, two license plate detection methods are studied, one is based on Sobel edge detection and the other is based on morphological gradient detection. Basing on OpenCV and PYTHON under Windows system, two methods of license plate detection are implemented, and the two algorithms are compared in detail from the aspects of license plate detection accuracy. These methods have high efficiency and good interactivity, which provide a reference for later license plate recognition. Number Plate Recognition (NPR) is a technology used to extract alphanumeric characters from images or video streams of vehicles' license plates. This process involves various steps such as image preprocessing, character segmentation, and optical character recognition (OCR). OpenCV (Open Source Computer Vision Library) provides a powerful platform for implementing ANPR systems due to its extensive collection of image processing functions and algorithms. In this paper, we present a comprehensive overview of ANPR using OpenCV, covering techniques for license plate detection, character segmentation, and OCR. We also discuss various challenges encountered in ANPR systems, such as variations in plate appearance, lighting conditions, and occlusions. Furthermore, we explore recent advancements in deep learning-based approaches for ANPR and discuss their potential for improving accuracy and robustness. Finally, we provide insights into future research directions and applications of ANPR technology in areas such as traffic management, law enforcement, and automated toll collection systems.

Published Paper   E-Certificate

P. Vinay, G. Rajesh, K. Bhanu Prasad, B. Naveen Kumar, & C. Vinay Sai (April-2024). NUMBER PLATE RECOGNITION USING OPENCV. INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT, 9(4), b36-b40. https://ijnrd.org/papers/IJNRD2404106.pdf

Volume 9 Issue 4, April-2024

Pages : b36-b40

Paper Reg. ID: IJNRD_217260

Published Paper Id: IJNRD2404106

Research Area: Engineering

Author Type: Indian Author

Country: Anantapur, Andhra Pradesh, India

Published Paper PDF: https://ijnrd.org/papers/IJNRD2404106.pdf

Published Paper URL: https://ijnrd.org/viewpaperforall?paper=IJNRD2404106

Journal Name: INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT(IJNRD)

UGC CARE JOURNAL PUBLICATION | ISSN: 2456-4184 | IMPACT FACTOR: 8.76 Calculated By Google Scholar | ESTD YEAR: 2016

An International UGC CARE JOURNAL PUBLICATION, Low Cost, Scholarly Open Access, Peer-Reviewed, Refereed Journal Impact Factor 8.76 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Publisher: IJNRD (IJ Publication) Janvi Wave | IJNRD.ORG | IJNRD.COM | IJPUB.ORG

© 2026 - Authors hold the copyright of this article. This work is licensed under a Creative Commons Attribution 4.0 International License. and The Open Definition. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0). 🛡️ Disclaimer: The content, data, and findings in this article are based on the authors’ research and have been peer-reviewed for academic purposes only. Readers are advised to verify all information before practical or commercial use. The journal and its editorial board are not liable for any errors, losses, or consequences arising from its use.

Call For Paper - Volume 11 | Issue 2 | February 2026

IJNRD is a Scholarly Open Access, Peer-Reviewed, Refereed, and UGC CARE Journal Publication with a High Impact Factor of 8.76 (calculated by Google Scholar & Semantic Scholar | AI-Powered Research Tool). It is a Multidisciplinary, Monthly, Low-Cost, and Transparent Peer Review Journal Publication that adheres to the New UGC CARE Transparent Peer-Reviewed Journal Policy and aligns with Scopus Journal Publication standards to ensure the highest level of research quality and credibility.

IJNRD offers comprehensive Journal Publication Services including indexing in all major databases and metadata repositories, Digital Object Identifier (Crossref DOI) assignment for each published article with additional fees, citation generation tools, and full Open Access visibility to enhance global research reach and citation impact.

The INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT (IJNRD) aims to advance applied, theoretical, and experimental research across diverse academic and professional fields. The journal promotes global knowledge exchange among researchers, developers, academicians, engineers, and practitioners, serving as a trusted platform for innovative, peer-reviewed journal publication and scientific collaboration.

Indexing Coverage: Google Scholar, SSRN, ResearcherID-Publons, Semantic Scholar (AI-Powered Research Tool), Microsoft Academic, Academia.edu, arXiv.org, ResearchGate, CiteSeerX, ResearcherID (Thomson Reuters), Mendeley, DocStoc, ISSUU, Scribd, and many other recognized academic repositories.

Transparent Peer Review Journal Publication: IJNRD operates a strict double-blind peer review system managed by 3000+ expert reviewers, ensuring ethical, unbiased, and high-quality review for every research paper.

For Indian Authors : Get a transparent peer review report from Scholar9.com for just ₹1000. View Sample Report

For Foreign Authors : A detailed peer review report is available through Scholar9.com for $20 USD. View Sample Report

Transparent Peer Review Journal Publication

⭐ Transparent Peer Review | 🕵️‍♂️ Double-Blind | 👨‍🏫 3000+ Expert Reviewers | 🇮🇳 Report for India Author ₹1000 | 🌐 Report for Foreign Author $20 | 📄 Sample Reports on Scholar9.com | 🌍 High Credibility | ⚖️ Ethical & Unbiased Evaluation

How to submit the paper?

By Our website

Click Here to Submit Paper Online

By Mail

Send your paper to editor@ijnrd.org

Recently, the UGC discontinued the UGC-CARE Journal List and introduced new parameters that allow publication in Transparent Peer-Reviewed (Refereed) Journals. IJNRD is Transparent Peer Review Journal Valid As per New UGC Notification.

You can now publish your research paper in IJNRD.ORG. IJNRD is a Transparent Peer-Reviewed Open Access (Refereed Journal), UGC and UGC CARE Approved, Crossref DOI, Multidisciplinary, Impact Factor calculate by Google Scholar. As an International, open-access, and online journal, Publishing with us ensures wider reach, academic credibility, and enhanced recognition for your work.

For more details, refer to the official notice: UGC Public Notice

⭐ Low Cost ₹1570 | 📚 UGC CARE Approved | 🔍 Peer-Reviewed | 🌐 Open Access | 🔗 Crossref DOI & Global Indexing | 📊 Google Scholar Impact Factor | 🧪 Multidisciplinary

Submit Paper Online  Call for Paper  About IJNRD UGC CARE Approval

Important Dates for Current issue

Paper Submission Open For: February 2026

Current Issue: Volume 11 | Issue 2 | February 2026

Impact Factor: 8.76

Last Date for Paper Submission: Till 28-Feb-2026

Notification of Review Result: Transparent peer review process - your paper is evaluated by experts, and you receive acceptance or rejection updates via email and SMS.

Publication of Paper: Once all documents are submitted, your paper is published without delay, and you can instantly download your certificate and confirmation letter online.

Frequency: Monthly (12 issue Annually).

Journal Type: IJNRD is an international open-access journal offering Low Cost Journal Publication, transparent Peer Review Journal Publication, Crossref DOI, and multidisciplinary research visibility under UGC CARE Approved Journal Publication.

Subject Category: Research Area

Approval, Licenses and Indexing: More Details

Call For Paper - Volume 11 | Issue 2 | February 2026

IJNRD.org offers low-cost journal publication starting at ₹1570 with UGC CARE Approved, refereed, peer-reviewed, open-access publishing. This multidisciplinary monthly journal, available in both online and print formats, features a strong Google Scholar-based impact factor of 8.76, Transparent Peer Review, CrossRef DOI, global indexing, fast publication, and complete metadata for maximum research visibility and citation impact across multidisciplinary domains.

Volume 11 | Issue 2 | February 2026 | IJNRD Transparent Peer Review Certificate | Submit Paper Online till 28-Feb-2026

⭐ UGC CARE Approved Refereed Journal | 🔍 Transparent Peer Review | 🌐 Open Access Publishing | 💰 Low-Cost ₹1570 | 🔗 CrossRef DOI & Global Indexing | 📊 Google Scholar Impact Factor 8.76 | 🧪 Multidisciplinary | Online & Print

Submit Paper Online