223,314 research outputs found
An Intelligent Monitoring System of Vehicles on Highway Traffic
Vehicle speed monitoring and management of highways is the critical problem
of the road in this modern age of growing technology and population. A poor
management results in frequent traffic jam, traffic rules violation and fatal
road accidents. Using traditional techniques of RADAR, LIDAR and LASAR to
address this problem is time-consuming, expensive and tedious. This paper
presents an efficient framework to produce a simple, cost efficient and
intelligent system for vehicle speed monitoring. The proposed method uses an HD
(High Definition) camera mounted on the road side either on a pole or on a
traffic signal for recording video frames. On the basis of these frames, a
vehicle can be tracked by using radius growing method, and its speed can be
calculated by calculating vehicle mask and its displacement in consecutive
frames. The method uses pattern recognition, digital image processing and
mathematical techniques for vehicle detection, tracking and speed calculation.
The validity of the proposed model is proved by testing it on different
highways.Comment: 5 page
Localised contourlet features in vehicle make and model recognition
Automatic vehicle Make and Model Recognition (MMR) systems provide useful performance enhancements to vehicle
recognitions systems that are solely based on Automatic Number Plate Recognition (ANPR) systems. Several vehicle
MMR systems have been proposed in literature. In parallel to this, the usefulness of multi-resolution based feature
analysis techniques leading to efficient object classification algorithms have received close attention from the research
community. To this effect, Contourlet transforms that can provide an efficient directional multi-resolution image
representation has recently been introduced. Already an attempt has been made in literature to use Curvelet/Contourlet
transforms in vehicle MMR. In this paper we propose a novel localized feature detection method in Contourlet transform
domain that is capable of increasing the classification rates up to 4%, as compared to the previously proposed Contourlet
based vehicle MMR approach in which the features are non-localized and thus results in sub-optimal classification.
Further we show that the proposed algorithm can achieve the increased classification accuracy of 96% at significantly
lower computational complexity due to the use of Two Dimensional Linear Discriminant Analysis (2DLDA) for
dimensionality reduction by preserving the features with high between-class variance and low inter-class variance
Hybrid-learning-based classification and quantitative inference of driver braking intensity of an electrified vehicle
The recognition of driver's braking intensity is of great importance for advanced control and energy management for electric vehicles. In this paper, the braking intensity is classified into three levels based on novel hybrid unsupervised and supervised learning methods. First, instead of selecting threshold for each braking intensity level manually, an unsupervised Gaussian Mixture Model is used to cluster the braking events automatically with brake pressure. Then, a supervised Random Forest model is trained to classify the correct braking intensity levels with the state signals of vehicle and powertrain. To obtain a more efficient classifier, critical features are analyzed and selected. Moreover, beyond the acquisition of discrete braking intensity level, a novel continuous observation method is proposed based on Artificial Neural Networks to quantitative analyze and recognize the brake intensity using the prior determined features of vehicle states. Experimental data are collected in an electric vehicle under real-world driving scenarios. Finally, the classification and regression results of the proposed methods are evaluated and discussed. The results demonstrate the feasibility and accuracy of the proposed hybrid learning methods for braking intensity classification and quantitative recognition with various deceleration scenarios
Automated License Plate Recognition Systems
Automated license plate recognition systems make use of machines learning coupled with traditional algorithmic programming to create software capable of identifying and transcribing vehicles’ license plates. From this point, automated license plate recognition systems can be capable of performing a variety of functions, including billing an account or querying the plate number against a database to identify vehicles of concern. These capabilities allow for an efficient method of autonomous vehicle identification, although the unmanned nature of these systems raises concerns over the possibility of their use for surveillance, be it against an individual or group. This thesis will explore the fundamentals behind automated license plate recognition systems, the state of their current employment, currently existing limitations, and concerns raised over the use of such systems and relevant legal examples. Furthermore, this thesis will demonstrate the training of a machine learning model capable of identifying license plates, followed by a brief examination of performance limitations encountered
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