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Method and device for identifying vehicle image

An image recognition and vehicle technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of unrecognized or misrecognized vehicles that cannot be authenticated, wait for opportunities to evade fares, and the vehicle license plate location rate cannot reach 100%.

Inactive Publication Date: 2008-11-12
昆明利普机器视觉工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that it only proposes to use the monitoring function of the monitoring camera to solve the problem of fraud and fare evasion when the toll collector operates
Its shortcoming is that the automatic recognition rate of the vehicle license plate cannot reach 100%. The reasons include the limitation of the recognition technology, the license plate is damaged, it is blocked by objects on the frame, the license plate number is dirty, or even man-made damage, snow , heavy rain, heavy fog, etc., so this method cannot be used to authenticate vehicles that cannot be identified or are incorrectly identified
Its shortcoming is that the positioning rate of the vehicle license plate cannot reach 100%, and the vehicle that cannot be located or is wrongly located cannot be authenticated.
In addition, the binarized image of the vehicle license plate can only reflect a license plate image feature of the vehicle, but cannot reflect the overall features of the vehicle
[0007] In addition, the common deficiency in the comparison technologies {I}, {II}, and {III} is that all three inventions lack a technical method for real-time authentication of vehicle identities at the entrances and exits of vehicles.

Method used

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  • Method and device for identifying vehicle image

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Embodiment Construction

[0039] figure 1 A schematic diagram of the vehicle image recognition method and device system using the present invention

[0040] Fig. 2 is a work flow chart of the application of the vehicle image recognition method and device according to the present invention to the vehicle toll station system on high-speed and high-grade highways

[0041] Below in conjunction with the vehicle image recognition method and device of the present invention, the method and device of the present invention will be further described with the application of the highway toll system lane toll station as an example:

[0042] At present, the toll fraud is common in the expressway toll system. The basic method to solve the toll fraud is to control and eliminate the toll fraud to the greatest extent through technical means.

[0043] The elements of tolls in the current expressway toll system include vehicle type, vehicle type, distance and status, and the basic method of toll fraud is to confuse the el...

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Abstract

The method and device for identifying running vehicle image may be used in toll gate of expressway and highway, entrance guard, safe guard, city traffic and other fields. By means of robot vision technology, image compression technology, contact and non-contact card read / write technology, and automatic vehicle license plate distinguishing technology, the present invention realizes vehicle identity confirming and raises passing vehicle managing efficiency. The device includes passing card, passing card read / write device, main controlling computer, image acquisition card, video unit, light compensating lighting unit, display and vehicle managing center database server. The method and device of the present invention can identify vehicles accurately and has real-time operation, opening system, convenient use, high performance / cost ratio and other advantages.

Description

Technical field: [0001] The invention relates to a passing vehicle image recognition method and device, which are applied in the fields of high-speed and high-grade highway vehicle toll stations, access control, security protection, urban traffic and the like. It belongs to the field of machine vision. Background technique: [0002] With the continuous rapid development of my country's automobile industry and the continuous increase of vehicle ownership, places such as vehicle transit charges, city checkpoints, parking lots and community access control have put forward higher requirements for vehicle identification and monitoring. [0003] Existing invention has following several kinds: [0004] Year-on-year technology {I}, Chinese Patent Publication No. CN 1201957A, the publication date was December 16, 1998, and the title of the invention is "A Closed Expressway Toll System with Image Monitoring Function". The lane system is composed of, in the entrance lane, the pass ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K17/00
Inventor 李一民潘晓露柯晓兵
Owner 昆明利普机器视觉工程有限公司
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