Video based mixed traffic flow parameter detecting method

A technology of mixed traffic and detection methods, which is applied in the direction of traffic flow detection, color TV parts, TV system parts, etc., can solve the problem of not being able to obtain mixed traffic flow parameters, and achieve huge engineering application economic value and important social meaning effect

Inactive Publication Date: 2009-09-09
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problem that the existing technology cannot obtain the mixed traffic flow parameters, and adopt a computer program to provide a video-based detection method for the mixed traffic flow parameters

Method used

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  • Video based mixed traffic flow parameter detecting method
  • Video based mixed traffic flow parameter detecting method
  • Video based mixed traffic flow parameter detecting method

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Embodiment Construction

[0057] Below in conjunction with accompanying drawing and embodiment the present invention will be described in further detail:

[0058] refer to figure 1, the city's video detection system of mixed traffic flow parameters is composed of hardware and software, that is, the hardware part of video acquisition and transmission equipment and the video detection computer program part of mixed traffic flow parameters. The detection method of mixed traffic flow parameters based on video is a video detection method of mixed traffic flow parameters realized by applying a self-compiled computer program on the basis of existing hardware equipment. Completely speaking, it includes the following steps: installing hardware equipment, obtaining traffic Video frame, initialization, background expression and update, shadow detection, object recognition, motion tracking, obtaining mixed traffic flow parameters and processing the obtained mixed traffic flow parameters to obtain accurate control ...

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Abstract

The invention discloses a method for detecting mixed traffic flow parameters based on video. The method is based on the existing hardware equipment to apply computer programs to realize the video detection method of mixed traffic flow parameters, which includes the following steps: installing hardware equipment, obtaining traffic video frame, initialization, background model, shadow detection, object recognition , motion tracking, obtaining mixed traffic flow parameters and processing the obtained mixed traffic flow parameters to obtain accurate control parameters to manage and control traffic through hardware devices, wherein the initialization steps include detection area selection, traffic scene location mapping and background initialization. According to the motion tracking of the object, the present invention can obtain its microscopic traffic behavior, such as: acceleration, lane change, stop, turning, retrograde and so on. The invention has high accuracy, the object recognition accuracy is greater than 98%, the speed accuracy is greater than 90%, the flow accuracy is greater than 98%, and the time occupancy accuracy is greater than 89%, which can meet the actual needs.

Description

technical field [0001] The invention relates to a method for acquiring traffic state parameters in an urban traffic management system, in particular to a video-based detection method for mixed traffic flow parameters. Background technique [0002] At present, traffic flow parameter detectors are mainly video detectors, microwave detectors, ground sense coil detectors, radar detectors and ultrasonic detectors, which can obtain basic parameters of traffic flow, such as: speed, flow rate, occupancy rate, vehicle type, etc. Realize the intelligent management of urban traffic. Among them, the urban traffic management system mainly uses the ground sense coil detector to obtain traffic flow parameters and then realize signal control, but the detector cannot realize the acquisition of pedestrian and bicycle traffic flow parameters, and can only be used for motor vehicle traffic flow signal control, and the detector Once damaged, the driveway needs to be closed for maintenance. Mic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01H04N5/14G06T7/00
CPCG06K9/00785G06V20/54
Inventor 曲昭伟王殿海李志慧陈永恒宋现敏胡宏宇陈红艳
Owner JILIN UNIV
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