Vehicle speed measuring method, device, system, electronic device and storage medium

Abstract

The present invention discloses a vehicle speed measuring method, a vehicle speed measuring device, a vehicle speed measuring system, an electronic device and a storage medium and belongs to the fieldof speed measuring technologies. With the vehicle speed measuring method, the vehicle speed measuring device, the vehicle speed measuring system, the electronic device and the storage medium adopted,the speeds of vehicles can be measured more conveniently. The vehicle speed measuring method includes the following steps that: the first original image position coordinate value of a specified position of a vehicle to be measured in one frame of video image and the second original image position coordinate value of the specified position of the vehicle to be measured in the other frame of videoimage are acquired; the first original image position coordinate value and the second original image position coordinate value are inputted into a pre-established mapping model, so that a corresponding first physical position coordinate value and second physical position coordinate value are obtained; the actual moving distance of the vehicle to be measured is determined according to the first physical position coordinate value and the second physical position coordinate value; and the speed of the vehicle to be measured is determined according to the actual moving distance of the vehicle to be measured and interval time between the one frame of video image and the other frame of video image. The vehicle speed measuring method, the vehicle speed measuring device, the vehicle speed measuring system, the electronic device and the storage medium of the invention are applied to vehicle speed measurement.

Description

Technical field [0001] This application relates to the technical field of speed measurement, and in particular to a vehicle speed measurement method, device, system, electronic equipment and storage medium. Background technique [0002] Vehicle speed monitoring is of great significance to the work of the transportation department. The speed monitoring system can be used to monitor the speed of vehicles on speed limit sections to limit speeding. [0003] Vehicle speed monitoring can be roughly divided into active measurement and passive measurement. Among them, the active measurement relies on specially installed speed measurement equipment or software systems in advance to measure the speed of vehicles in a specific area at a fixed location. The method is pre-measurement; the passive measurement is based on the video images collected by the video camera. The method of vehicle speed measurement is post-event measurement. [0004] The above-mentioned speed measurement method has obvi...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned speed measurement method has obvious defects: the active measurement method can only measure the vehicle speed at a fixed location, the scope of application is not wide, and the preliminary layout work is also very cumbersome

However, in order to calculate the measured distance, there needs to be reference objects or marking lines that have not changed in the video to determine the start and end measurement points (such as zebra crossings, isolation piles, trees, etc.), and use these reference objects for spatial modeling calculations , and as a passive measurement method (no reference objects are arranged in advance), the probability of finding a qualified reference object in the video that has not changed is relatively small, and its size must be re-measured afterwards; The device calculates the moving distance in proportion to the size in the plane. However, this requires the shooting angle and requires the lens to be perpendicular to the road surface, so the application is very limited.

[0005] For how to measure vehicle speed more easily, there is no effective solution in the relevant technical field

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