Video based mixed traffic flow parameter detecting method

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...

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

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