Highway vehicle speed measurement method and device, codec and storage device
A technology for highways and vehicles, which is applied in the direction of using the device for measuring the time required to move a certain distance, the reradiation of electromagnetic waves, and the radio wave measurement system. It can solve the problems of vehicle moving distance and time difference, and achieve high speed measurement accuracy. The effect of good speed measurement accuracy
Active Publication Date: 2020-02-21
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology
At present, the vehicle speed measurement method based on radar and sensors has been relatively mature, but in some areas without radar, the vehicle speed measurement method based on video images is particularly important. The main problem to be solved in this method is to obtain the vehicle moving distance and However, due to the high speed of vehicles on the expressway, the accuracy of obtaining the moving distance and time of the vehicle is poor. Therefore, how to intelligently and accurately measure the speed of vehicles on the expressway is a problem that people are increasingly concerned about.
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0025] The terms "first", "second", and "third" in this application are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, features defined as "first", "second", and "third" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least t...
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The invention discloses a highway vehicle speed measurement method and device, a codec and a storage device. The speed measurement method comprises the following steps: calibrating a first camera anda second camera; collecting frames of first images captured by the first camera, determining a first target image from the frames of first images, identifying the license plate number of each vehiclein the first target image, recording the shooting time of the first target image, and calculating the distance between the vehicle and the first marker at the moment; collecting frames of second images captured by a second camera, determining a second target image from the frames of second images, identifying the license plate number of each vehicle in the second target image, recording the shooting time of the second target image, and calculating the distance between the vehicle and a second marker at the moment; and obtaining the distance between the first marker and the second marker, and calculating the driving speed of the same vehicle according to driving data of the vehicle. The driving speed of the vehicle with the same license plate number in the highway scene is calculated intelligently by calibration by two cameras, and the measuring precision is high.
Description
technical field [0001] The present application relates to the technical field of video vehicle speed analysis, in particular to a speed measurement method, device, codec and storage device for expressway vehicles. Background technique [0002] With the rapid development of science and technology, while motor vehicles bring convenience to people's lives, they also cause a series of potential safety hazards. Among them, speeding driving has become the main cause of traffic accidents. Therefore, the speed measurement of motor vehicles and the monitoring of speeding vehicles have become Become an integral part of the intelligent traffic control system. At present, the vehicle speed measurement method based on radar and sensors has been relatively mature, but in some areas without radar, the vehicle speed measurement method based on video images is particularly important. The main problem to be solved in this method is to obtain the vehicle moving distance and However, due to th...
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Login to View More IPC IPC(8): G01P3/68
CPCG01P3/68
Inventor 林骏王亚运
Owner ZHEJIANG DAHUA TECH CO LTD