Speed measurement method, device and equipment
A speed measurement and speed technology, applied in the field of intelligent transportation, can solve the problems of limited installation environment of traffic cameras, low accuracy of detection results, and high hardware cost
Active Publication Date: 2021-05-14
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology
[0003] The above speed detection method needs to set up at least two traffic cameras, and the hardware cost is high; the detected speed is the average speed of the vehicle, not the instantaneous speed, and the accuracy of the detection result is low; the road section between the two traffic cameras needs to have no forks , the installation environment of traffic cameras is limited
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[0055]The terminology used in the embodiments of the present application is only used to explain the specific embodiments of the present application, not intended to limit the application.
[0056]In the existing implementation, the traffic camera is separately erected at both ends of the road interval. For a target vehicle, the target vehicle inputs the road section, the first traffic camera captures the image of the target vehicle, and the target vehicle is detected from the image. The license plate number, when the target vehicle outputs the road section section, the second traffic camera captures the image of the target vehicle, detects the license plate number of the target vehicle from the image, and calculates according to the length of the road interval and the time difference of the two capture images. The average speed of the target vehicle in the road section is obtained as the measurement result of the target vehicle.
[0057]The above process needs to assume that at least 2 t...
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The invention provides a speed measurement method, device and equipment. The method comprises the following steps: acquiring a first target video frame; determining a first external frame from the first target video frame, wherein the first external frame is used for representing an area where a first vehicle is located in the first target video frame; after the first external frame is successfully matched with a second external frame in the second target video frame, obtaining a first world coordinate corresponding to a specified edge of the first external frame and a second world coordinate corresponding to a specified edge of the second external frame, wherein the second target video frame is a previous target video frame of the first target video frame, and the second external frame is used for representing an area where the first vehicle is located in the second target video frame; and calculating the speed of the first vehicle according to the first world coordinate, the second world coordinate and a first duration, wherein the first duration is a time interval between the first target video frame and the second target video frame. The precision of a speed measurement result is high, the hardware cost is low, and the erection environment of a camera is not limited.
Description
Technical field[0001]The present application relates to the field of intelligent traffic, and in particular, to a speed measurement method, device, and equipment.Background technique[0002]Currently, there is generally a monitoring device to detect the speed of the vehicle to screen the overspeed vehicle. Common speed detecting methods are: Eliminate traffic cameras at both ends of the road interval, using a traffic camera to detect the average speed of the target vehicle in the road section.[0003]The above speed detecting method requires an extension of at least 2 traffic cameras, high hardware cost; detected speed is the average speed of the vehicle, not instantaneous speed, low accuracy of the detection result; the road section segment between the two traffic cameras requires no fork intersection The settling environment of the traffic camera is limited.Inventive content[0004]The present application provides a speed measurement method, device and equipment, high accuracy, low hard...
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IPC IPC(8): G01P3/38
CPCG01P3/38Y02T10/40
Inventor 舒正阳
Owner HANGZHOU HIKVISION DIGITAL TECH