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In real-world scenes, vehicles are frequently overlapped by other objects and various backgrounds. In this study, an effective method to detect such vehicles, especially those partially occluded by nearby vehicles or other objects is presented. The authors have developed a statistical approach to generate occlusion hypothesis and a new hypothesis verification method. To verify occlusion hypothesis,...
Vehicular Ad Hoc Network (VANET) is an emerging field of wireless networks that facilitates different applications such traffic information for participant vehicles and related authorities. However, deploying of such applications is mainly depending on the market penetration rate of this technology. In this paper, we propose a new 3-steps approach for estimation of traffic volume in a road segment...
Airborne LiDAR (ALS) data are characterized by involving not only rich spatial but also temporal information. It is possible to extract moving vehicles with motion artifacts from single-pass airborne LiDAR data, based on which the velocity of vehicles can be derived. In this paper, a series of methods for velocity estimation of moving vehicles using airborne LiDAR data is presented and evaluated....
This paper propose a method for automatic vehicle detection in QuickBird images of small highways, with relatively low traffic density, frequent occurrence of tree shadows, and changes in illumination conditions. The vehicle detection is based on an elliptical Laplacian of Gaussian scale space methodology, where the vehicle locations are detected at local extrema in the image response to convolution...
Car license plate detection is a basic task in ITS. A MSER license plate detection method is proposed in the paper constrained by some priori knowledges of license plate. First the input image is pre-processed with grayscaling and gray stretching, etc, and then, the candidate MSER(Maximally Stable Extremal Region) license plate regions are chosen according to the pixel sum, the scale and length-width...
It is a key segment of the traffic management system about detecting traffic parameters. With the continuous development of computer vision, the video traffic detection method is paid more and more attention. It is constructed that an Epi-polar Plane Image (EPI) method reflect the surface and movement characteristics of the vehicle, then the EPI is processing of normalization, filtering and texture...
Vehicle classification is a hard task in ITS. A real-time vehicle classification method based on eigenface is proposed, it includes two main steps: training and classification. In the training step, first, using the time average image approach to obtain and update the background model, and then, using the background difference approach to detect and extract the outline of a moving vehicle, furthermore...
Urban Comprehensive Passenger Transportation Hubs (UCPTH) as highly-concentrated passenger distribution sites, the departure time of connection public Transportation exerts great influence on average residence time of passengers who arrive at hubs. Coordination of transfer between the arrival time of passengers carried from outside to hubs and the departure time of various connection public Transportation...
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...
The computer simulation of road traffic is an important tool for analysis and control of traffic networks. Because a detailed simulation of a large traffic network can be computationally intensive, many simulators have been adapted for distributed computing environment, where combined power of multiple connected computers is utilized. An important issue of the distributed traffic simulation is the...
In order to ensure ambulance man arrived the scene on time, remove the accident , treat the injured after the accident occurred, and achieve to the minimize loss of traffic accidents and the maximum social benefits, basing on principles of reliability, this paper which started with emergency rescue system structure analyzed the structure of emergency rescue system on highway, from three ways: incident...
Traffic restricted or mandatory divergence is a common method of traffic organization. Applying TranCAD in estimating traffic organization scheme has much limitations; especially, TranCAD is unable to estimate it when the certain vehicle is prohibited to pass. In the paper, based on model of stochastic user equilibrium(SUE) with elastic demand, traffic restricted divergence(TRD) model is established...
Automatic Number Plate Recognition (ANPR) is a real time embedded system which identifies the characters directly from the image of the license plate. It is an active area of research. ANPR systems are very useful to the law enforcement agencies as the need for Radio Frequency Identification tags and similar equipments are minimized. Since number plate guidelines are not strictly practiced everywhere,...
Monitoring and warning the expressway exit incidents is an effective way to prevent expressway accidents. This paper deals with illegal changing lanes and illegal parking behavior as the major incidents that should be monitored. In this paper, we introduce a system that aims to reduce the chance of traffic delay and traffic conflict and has put it into practice to test its effectiveness. According...
This paper analyzes the effect of penetration rate to the estimation error in mobile phone based traffic state estimation systems. More concretely, the error-tolerance is analyzed based upon the penetration rate of participating mobile phones. In addition, a hybrid model by which not only real-time data but also the historical data utilized under a suitable data mining technique is introduced. This...
Traffic management is a serious issue in the intelligent transportation systems (ITS). One of the most significant current discussions is traffic incident detection. We have developed an algorithm, referred to vehicle detection based on level set theory and background subtraction, accurate contour of moving object is obtained. The Kalman filtering is applied to predict the possible trajectories of...
LPR (License Plate Recognition) is a foundation component of modern transportation management systems. It uses a set of computer image-processing technologies to identify vehicle by its license plate. Character recognition is the core of LPR, which is essentially a multi-classification problem. The challenge is how to recognize every character of the license plate accurately and rapidly in case of...
Nowadays, various transportation means use Linux as the operating system for their embedded control systems; however Linux uses all the processes in the hardware equally. This motivates some designer to develop an entire new Operating System for the vehicle; where a modification of Linux can produce the same and even a better product. This paper explains how this modification was designed and implemented...
Simulation software has important significance in the drivers' training. This paper mainly describes the use of unity 3D engine designing the process of driving training simulation system, it introduce how to model through 3D animation software, develop the system platform by using unity 3D software and design the driving training simulation system.
To solve the problem that traffic safety risks is difficult to identify and compare quantitatively for the new road or accident black spots, the virtual simulation tests (VST) system is put forward combined the numerical simulation. The driver module on vehicle speed control, the vehicle dynamic network solution module, traffic environment 3D model, traffic safety management and control module, human-vehicle-road...
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