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This paper presents an efficient and layout-independent Automatic License Plate Recognition (ALPR) system based on the state-of-the-art YOLO object detector that contains a unified approach for license plate (LP) detection and layout…

Computer Vision and Pattern Recognition · Computer Science 2021-03-10 Rayson Laroca , Luiz A. Zanlorensi , Gabriel R. Gonçalves , Eduardo Todt , William Robson Schwartz , David Menotti

Automatic License Plate Recognition (ALPR) involves extracting vehicle license plate information from image or a video capture. These systems have gained popularity due to the wide availability of low-cost surveillance cameras and advances…

Computer Vision and Pattern Recognition · Computer Science 2025-01-09 Victor Nascimento Ribeiro , Nina S. T. Hirata

In this work, we tackle the problem of car license plate detection and recognition in natural scene images. We propose a unified deep neural network which can localize license plates and recognize the letters simultaneously in a single…

Computer Vision and Pattern Recognition · Computer Science 2017-09-27 Hui Li , Peng Wang , Chunhua Shen

The problem of vehicle licence plate re-identification is generally considered as a one-shot image retrieval problem. The objective of this task is to learn a feature representation (called a "signature") for licence plates. Incoming…

Computer Vision and Pattern Recognition · Computer Science 2017-12-04 Abhinav Kumar , Shantanu Gupta , Vladimir Kozitsky , Sriganesh Madhvanath

This paper introduces a novel two-stage framework for accurate Egyptian Vehicle License Plate Recognition (EVLPR). The first stage employs image processing techniques to reliably localize license plates, while the second stage utilizes a…

Computer Vision and Pattern Recognition · Computer Science 2024-08-07 M. A. Sayedelahl

The development of the Automatic License Plate Recognition (ALPR) system has received much attention for the English license plate. However, despite being the sixth largest population around the world, no significant progress can be tracked…

Computer Vision and Pattern Recognition · Computer Science 2022-02-25 Md. Saif Hassan Onim , Hussain Nyeem , Koushik Roy , Mahmudul Hasan , Abtahi Ishmam , Md. Akiful Hoque Akif , Tareque Bashar Ovi

The k-Nearest Neighbor (k-NN) classification algorithm is one of the most widely-used lazy classifiers because of its simplicity and ease of implementation. It is considered to be an effective classifier and has many applications. However,…

Machine Learning · Computer Science 2014-02-13 Stefanos Ougiaroglou , Georgios Evangelidis , Dimitris A. Dervos

Inspired by recent advances in retrieval augmented methods in NLP~\citep{khandelwal2019generalization,khandelwal2020nearest,meng2021gnn}, in this paper, we introduce a $k$ nearest neighbor NER ($k$NN-NER) framework, which augments the…

Computation and Language · Computer Science 2022-04-01 Shuhe Wang , Xiaoya Li , Yuxian Meng , Tianwei Zhang , Rongbin Ouyang , Jiwei Li , Guoyin Wang

$K$-NN classifier is one of the most famous classification algorithms, whose performance is crucially dependent on the distance metric. When we consider the distance metric as a parameter of $K$-NN, learning an appropriate distance metric…

Machine Learning · Computer Science 2019-11-26 Kun Song

This work details Sighthounds fully automated license plate detection and recognition system. The core technology of the system is built using a sequence of deep Convolutional Neural Networks (CNNs) interlaced with accurate and efficient…

Computer Vision and Pattern Recognition · Computer Science 2017-03-30 Syed Zain Masood , Guang Shu , Afshin Dehghan , Enrique G. Ortiz

We present a YOLOv3-CNN pipeline for detecting vehicles, segregation of number plates, and local storage of final recognized characters. Vehicle identification is performed under various image correction schemes to determine the effect of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-11 Rajdeep Adak , Abhishek Kumbhar , Rajas Pathare , Sagar Gowda

Smart automated traffic enforcement solutions have been gaining popularity in recent years. These solutions are ubiquitously used for seat-belt violation detection, red-light violation detection and speed violation detection purposes.…

Computer Vision and Pattern Recognition · Computer Science 2019-12-06 Alperen Elihos , Burak Balci , Bensu Alkan , Yusuf Artan

A k nearest neighbor (kNN) query on road networks retrieves the k closest points of interest (POIs) by their network distances from a given location. Today, in the era of ubiquitous mobile computing, this is a highly pertinent query. While…

Data Structures and Algorithms · Computer Science 2016-08-11 Tenindra Abeywickrama , Muhammad Aamir Cheema , David Taniar

In the $k$-nearest neighborhood model ($k$-NN), we are given a set of points $P$, and we shall answer queries $q$ by returning the $k$ nearest neighbors of $q$ in $P$ according to some metric. This concept is crucial in many areas of data…

Machine Learning · Computer Science 2018-12-03 Hendrik Fichtenberger , Dennis Rohde

Adoption of AI driven techniques in public services remains low due to challenges related to accuracy and speed of information at population scale. Computer vision techniques for traffic monitoring have not gained much popularity despite…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Anmol Singhal Navya Singhal

Automatic License Plate Recognition (ALPR) has been the focus of many researches in the past years. In general, ALPR is divided into the following problems: detection of on-track vehicles, license plates detection, segmention of license…

Computer Vision and Pattern Recognition · Computer Science 2016-11-01 Gabriel Resende Gonçalves , Sirlene Pio Gomes da Silva , David Menotti , William Robson Schwartz

In this paper, we present an algorithm for real-world license plate recognition (LPR) from a low-quality image. Our method is built upon a framework that includes denoising and rectification, and each task is conducted by Convolutional…

Computer Vision and Pattern Recognition · Computer Science 2019-10-10 Younkwan Lee , Juhyun Lee , Hoyeon Ahn , Moongu Jeon

Neural network classifiers have become the de-facto choice for current "pre-train then fine-tune" paradigms of visual classification. In this paper, we investigate k-Nearest-Neighbor (k-NN) classifiers, a classical model-free learning…

Computer Vision and Pattern Recognition · Computer Science 2021-12-21 Menglin Jia , Bor-Chun Chen , Zuxuan Wu , Claire Cardie , Serge Belongie , Ser-Nam Lim

Automatic License Plate Recognition (ALPR) is a challenging area of research due to its importance to variety of commercial applications. The overall problem may be subdivided into two key modules, firstly, localization of license plates…

Computer Vision and Pattern Recognition · Computer Science 2015-01-26 Satadal Saha , Subhadip Basu , Mita Nasipuri , Dipak Kumar Basu

Recent advancements in super-resolution for License Plate Recognition (LPR) have sought to address challenges posed by low-resolution (LR) and degraded images in surveillance, traffic monitoring, and forensic applications. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2025-07-09 Valfride Nascimento , Gabriel E. Lima , Rafael O. Ribeiro , William Robson Schwartz , Rayson Laroca , David Menotti