scispace - formally typeset
Open AccessJournal ArticleDOI

Brazilian License Plate Detection Using Histogram of Oriented Gradients and Sliding Windows

Reads0
Chats0
TLDR
A sliding window approach based on Histogram of Oriented Gradients (HOG) features is used for Brazilian license plate detection, which consists in scanning the whole image in a multiscale fashion such that the license plate is located precisely.
Abstract
Due to the increasingly need for automatic traffic monitoring, vehicle license plate detection is of high interest to perform automatic toll collection, traffic law enforcement, parking lot access control, among others. In this paper, a sliding window approach based on Histogram of Oriented Gradients (HOG) features is used for Brazilian license plate detection. This approach consists in scanning the whole image in a multiscale fashion such that the license plate is located precisely. The main contribution of this work consists in a deep study of the best setup for HOG descriptors on the detection of Brazilian license plates, in which HOG have never been applied before. We also demonstrate the reliability of this method ensured by a recall higher than 98% (with a precision higher than 78%) in a publicly available data set.

read more

Citations
More filters
Proceedings ArticleDOI

Real-Time Brazilian License Plate Detection and Recognition Using Deep Convolutional Neural Networks

TL;DR: This work proposed an end-to-end DL-ALPR system for Brazilian license plates based on state-of-the-art Convolutional Neural Network architectures and was able to correctly detect and recognize all seven characters of a license plate in 63.18% of the test set.
Journal ArticleDOI

Real-time license plate detection and recognition using deep convolutional neural networks

TL;DR: This work presents an end-to-end ALPR method based on a hierarchical Convolutional Neural Network, and shows that the augmentation process significantly increases the recognition rate.
Journal ArticleDOI

Benchmark for License Plate Character Segmentation

TL;DR: In this article, the authors proposed a novel benchmark composed of a dataset designed to focus specifically on the character segmentation step of the ALPR within an evaluation protocol, which is composed of 2,000 Brazilian license plates consisting of 14,000 alphanumeric symbols and their corresponding bounding box annotations.
Proceedings ArticleDOI

Real Time Indian License Plate Detection using Deep Neural Networks and Optical Character Recognition using LSTM Tesseract

TL;DR: The goal of this paper is to design a robust technique for License Plate Detection in the images using deep neural networks, Pre-process the detected license plates and perform License Plate Recognition (LPR) using LSTMTesseract OCR Engine and achieve robust results.
Journal ArticleDOI

Self-Supervised Collaborative Multi-Network for Fine-Grained Visual Categorization of Tomato Diseases

TL;DR: This work proposes a novel model, which consists of 3 networks, including a Location network, a Feedback network, and a Classification network, named LFC-Net, which achieves the most advanced performance in the tomato dataset, with accuracy up to 99.7%.
References
More filters
Proceedings ArticleDOI

Histograms of oriented gradients for human detection

TL;DR: It is shown experimentally that grids of histograms of oriented gradient (HOG) descriptors significantly outperform existing feature sets for human detection, and the influence of each stage of the computation on performance is studied.
Proceedings ArticleDOI

Rapid object detection using a boosted cascade of simple features

TL;DR: A machine learning approach for visual object detection which is capable of processing images extremely rapidly and achieving high detection rates and the introduction of a new image representation called the "integral image" which allows the features used by the detector to be computed very quickly.
Proceedings ArticleDOI

Fast Human Detection Using a Cascade of Histograms of Oriented Gradients

TL;DR: This work integrates the cascade-of-rejectors approach with the Histograms of Oriented Gradients features to achieve a fast and accurate human detection system that can process 5 to 30 frames per second depending on the density in which the image is scanned, while maintaining an accuracy level similar to existing methods.
Proceedings ArticleDOI

Integral histogram: a fast way to extract histograms in Cartesian spaces

TL;DR: The integral histogram method makes it possible to employ even an exhaustive search process in real-time, which was impractical before, and enables the description of higher level histogram features.
Journal ArticleDOI

Automatic License Plate Recognition (ALPR): A State-of-the-Art Review

TL;DR: This paper categorizes different ALPR techniques according to the features they used for each stage, and compares them in terms of pros, cons, recognition accuracy, and processing speed.
Related Papers (5)