Video-based vehicle overspeed monitoring method and system

A vehicle and video technology, applied in the field of intelligent mapping, can solve the problems of being unable to deal with violations in time, arrest escaped vehicles, and cannot provide traffic information of speeding vehicles, etc., and achieve automatic license plate recognition with fast speed, high practical value, and strong versatility Effect

Active Publication Date: 2010-06-16
BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They use the frequency change of the transmitted wave to monitor the information of the vehicle when the vehicle passes by. However, this system cannot provide comprehensive traffic information such as the type of speeding vehicle and the license plate number, and cannot handle violations in time and arrest escaped vehicles.

Method used

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  • Video-based vehicle overspeed monitoring method and system
  • Video-based vehicle overspeed monitoring method and system
  • Video-based vehicle overspeed monitoring method and system

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] The invention provides a video-based vehicle overspeed monitoring method, such as figure 1 As shown, it includes the following steps:

[0026] Step S11: image acquisition and digitization;

[0027] Use the camera to collect video images on the road in real time, and digitize the collected video images.

[0028] Step S12: image preprocessing;

[0029] Preprocessing is performed on the digitized image above, and the preprocessing includes image geometric correction, image enhancement and image filtering. In this embodiment, the image uniformly adopts a 256-level grayscale image, and the image is enhanced by a method of grayscale expansion. The gray range of the image is linearly extended to 0--255, and the license plate definition of the processed image is obviously improved. Image filtering uses a nonlinear median filtering algorithm...

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Abstract

The invention provides a video-based vehicle overspeed monitoring method and a video-based vehicle overspeed monitoring system. The method comprises the following steps: firstly, performing standardization and enhancement on originally acquired images through image pretreatment; then, acquiring the vehicle speed of a dynamic target through dynamic target segmentation, the dynamic target tracking and the vehicle speed measurement, and judging whether the dynamic target is overspeed through the vehicle speed; and finally, finishing the identification of the plate number of the dynamic target and transmitting the data to a monitoring center through the plate number positioning and character recognition. The video-based vehicle overspeed monitoring system realizes full-automatic monitoring and networking, and has convenient erection, low cost and higher practical value. The video-based vehicle overspeed monitoring system has strong universality, strong openness, and strong extensibility. In addition, the video-based vehicle overspeed monitoring system is unnecessarily embedded with a wayside induction coil, adopts video to detect the overspeed state in a non-contact way, integrates the vehicle speed measurement and the plate number identification at the front end of the system, and has low requirement on the communication bandwidth.

Description

technical field [0001] The invention relates to the technical field of intelligent mapping, in particular to a video-based vehicle overspeed monitoring method and system. Background technique [0002] With the rapid development of the national economy, more and more vehicles are driving on the highway, and the speed is getting faster and faster. The cases related to vehicle traffic are also on the rise, and cases such as traffic accidents and escapes occur from time to time. How to use scientific means to help the public security department to effectively control the phenomenon of speeding violations on the expressway and arrest escaped vehicles has become an urgent problem for the public security transportation department. [0003] At present, the mature systems that can complete the overspeed monitoring function include: microwave radar-based and laser-based overspeed monitoring systems. They use the frequency change of the transmitted wave to monitor the information of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/052G06K9/36G06K9/62H04N7/18
Inventor 卢晓鹏
Owner BEIJING VIMICRO ARTIFICIAL INTELLIGENCE CHIP TECH CO LTD
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