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The Design and Implementation of Traffic Video Speed System Based on the Component Technology

Author: TongXing
Tutor: WangMingYan
School: Nanchang University
Course: Computer Software and Theory
Keywords: Target Detection Tracking Gaussian mixture model Shadow detection ActiveX components
CLC: TP391.41
Type: Master's thesis
Year: 2009
Downloads: 38
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Abstract


The vehicle-based video surveillance technology velocimetry With a large detection area, system settings, and other prominent feature convenient, intelligent transportation systems have become hot research field. In this paper, this hot, studied the highway environment, component-based traffic video speed system design implementation. Mainly related to computer vision, information collection, video, image processing and other aspects of knowledge. Which focuses on the moving vehicle detection and tracking algorithm, the speed of the measured approach and how the system in componentized form of packaging in order to meet the requirements of future system upgrades. Firstly, the principle of the traffic video speed and problems were analyzed. Speed ??is determined by the distance and time, so the problem of converting video speed driving distance and travel time calculations measurement problem. These issues were raised and how to solve ideas. Analysis of the actual speed environment, need to face the problem to the system design and equipment placement to provide a reference. Then focus on a moving vehicle detection algorithm for image preprocessing methods pre-test gave a brief introduction. Describes commonly used in moving target detection in several ways, and their advantages and disadvantages are compared to determine a suitable outdoor environment based on improved Gaussian mixture background model detection algorithm, the main job of the three improvements: Extract Driving area, excluding invalid region, Gaussian mixture modeling to reduce the number of pixels; using three frame difference method to solve the strong changes in the weather and light mutation problem; difference driving properties of pixels within the region to improve the Gaussian mixture model update speed. With these improvements ways to improve detection algorithm running speed and accuracy. Then the process of moving shadows vehicle detection problem to do the appropriate research and analysis. The use of moving shadows moving vehicle and the corresponding difference on the property is proposed to improve the HSV color space based on shadow detection methods, through these improvements shadow detection algorithm improves the efficiency and accuracy. Moving vehicle tracking, research and analysis in several common tracking algorithm based on the use of the extended Kalman filter based target tracking method for multi-target tracking. Tests showed that this method of tracking on the highway satisfactory. Finally, comparing the advantages and disadvantages of several component technology and system design requirements for components after use ActiveX component technology to determine the functional modules of the system components of packaging, to facilitate future expansion of secondary development and function.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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