Vehicle positioning and vehicle speed measurement method based on vehicle dynamic video features
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A technology for video features and vehicles, applied in the field of intelligent transportation and close-range photogrammetry, can solve the problems of low accuracy, high false detection rate, and high cost of hardware installation and configuration
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A technology for video features and vehicles, applied in the field of intelligent transportation and close-range photogrammetry, can solve the problems of low accuracy, high false detection rate, and high cost of hardware installation and configuration
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Embodiment 1
[0036] Such as figure 1 As shown, a vehicle positioning and vehicle speed measurement method based on vehicle dynamic video features involved in this embodiment includes using a calibration vehicle to obtain vehicle dynamic video feature parameters, using video dynamic features to quickly identify the vehicle to be tested, and restoring the vehicle dynamic feature model to be tested And the four steps of vehicle position and speed calculation, which are as follows:
[0037] The first step is to use the calibration vehicle driving process data to obtain vehicle dynamic video feature parameters: drive a calibration vehicle facing the camera lens of the road traffic video monitoring system from far to near at a constant speed, and record the image feature size and The vehicle's actual motion state parameter sequence information, and the relationship between the vehicle's dynamic video feature parameters and the image feature size are used to obtain the vehicle's dynamic video fea...
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Abstract
A vehicle positioning and vehicle speed measurement method based on vehicle dynamic video features in the technical field of intelligent transportation and close-range photogrammetry. The dynamic image feature size of the vehicle in the video image in the segment is determined, and the dynamic video feature model of the driving process of the vehicle to be tested corresponding to each image frame is reconstructed and restored; The mapping relationship of vehicle motion parameters calculates the actual position and vehicle speed value sequence corresponding to each image frame during the driving process of the vehicle to be tested, and realizes the acquisition of the actual vehicle position and driving speed information. The invention is easy to implement and has high accuracy, and is suitable for various vehicle speed measurement requirements of a road traffic video monitoring system.
Description
technical field [0001] The invention relates to a method in the technical field of intelligent transportation and close-range photogrammetry, in particular to a method for vehicle positioning and vehicle speed measurement based on vehicle dynamic video features used in existing road traffic video monitoring systems. Background technique [0002] In road traffic monitoring and management, vehicle speed measurement is an important basis for road traffic control such as traffic accident cause analysis and responsibility identification, road flow monitoring and regulation intervention, and plays a vital role in the establishment of intelligent transportation systems. In terms of road traffic, traditional vehicle speed measurement methods mainly include: radar detection, induction coil detection, laser / infrared detection, ultrasonic / microwave detection, etc. Among them, radar detection and induction coil detection methods are more commonly used. In addition, with the development ...
Claims
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