Method for measuring speed through vehicle road traffic videos based on image perspective projection transformation

Abstract

The invention discloses a method for measuring speed through vehicle road traffic videos based on image perspective projection transformation in the technical field of digital image processing. The method for measuring speed through road traffic videos is applied to the traditional road traffic video surveillance system, and solves the problems that the measurement accuracy is low, the real-time property is poor, the measurement method is complicated, the hardware configuration cost is high, and the like in the traditional speed measuring method. According to the method disclosed by the invention, the actual motion tracks of vehicles are obtained by utilizing the perspective projection imaging principle through necessary technologies, such as camera distortion calibration, perspective projection plane transformation, projection feature identification and tracking of vehicles, and the like, and the moving speed and the traveling direction of the vehicles are measured simultaneously. The speed measuring method based on image perspective projection transformation has the advantages of easiness in extraction of the shape features of vehicles, high robustness, no additional device and pre-calibration, high responding speed, high accuracy, low cost and easiness in realization and is applicable to various traditional road monitoring systems.

Description

technical field [0001] The invention relates to a method in the technical field of digital image processing, in particular to a vehicle road traffic video speed measurement method based on image perspective projection transformation. 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 of image processing technology and the improvement of computer performance, the tec...

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the above-mentioned deficiencies existing in the prior art, and provides a vehicle road traffic video speed measurement method based on image perspective projection transformation, which is applied to the existing road traffic video monitoring system, and solves the problem of low measurement accuracy, poor real-time performance, and poor measurement accuracy of the traditional speed measurement method. Complicated methods and high hardware configuration costs

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