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Method and device for license plate location recognition, vehicle-logo location recognition and vehicle type

A vehicle logo positioning and license plate positioning technology, which is applied in the field of vehicle identification, can solve the problem of not being able to identify the specific vehicle model, and achieve the effect of highlighting substantive features and accurate positioning and recognition

Inactive Publication Date: 2007-03-14
王枚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for license plate location recognition, vehicle logo location recognition, and vehicle type identification, which mainly solves the problem that the prior art cannot identify specific vehicle types and other details.

Method used

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  • Method and device for license plate location recognition, vehicle-logo location recognition and vehicle type
  • Method and device for license plate location recognition, vehicle-logo location recognition and vehicle type

Examples

Experimental program
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Embodiment 1

[0021] Embodiment 1, referring to Figures 1 and 2, the camera device 1 is installed at the entrance of the highway toll station. The camera device 1 can be a camera or a dome camera to ensure that passing vehicles can obtain clear images of the front of the vehicle. Auxiliary by supplementary light equipment, the induction device 2 is installed underground at the entrance of the toll station. The induction device 2 can be a ground induction coil or a sensor. When the vehicle passes the ground induction coil 2, the camera can immediately capture the image of the front of the vehicle. The cable is connected to the industrial computer 3, and the industrial computer 3 adopts embedded technology, and the programs of license plate location recognition, vehicle logo location recognition and vehicle model recognition are preset; the industrial computer 3 receives the camera 1 to capture the image of the front part of the car, and uses the HSV spatial information to extract the license p...

Embodiment 2

[0022] Embodiment 2 is the same as Embodiment 1. The difference is that the camera device 1 is installed on the ordinary road, and the trigger sensor device 2 is installed at the same time, and other components are connected. A camera device 1 can be installed on each lane, and at the same time A camera device 1 is installed on the center line of the adjacent two lanes to ensure that a complete head image of the passing vehicle can be obtained.

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Abstract

The disclosed license plate positioning and recognition method comprises: using camera to extract on-road vehicle head image; by color space feature and space information feature, positioning the license plate area; with the topology relation between license plate and vehicle mark, positioning mark to find mark from standard database for vehicle type; and extracting the pattern and light on left or right of the mark to decide and determine exact vehicle type. This invention has high recognition precision for wide application.

Description

Technical field: [0001] The invention relates to the technical field of vehicle recognition, in particular to a method and device for performing license plate location recognition, vehicle logo location recognition and vehicle model recognition from vehicle head images. Background technique: [0002] With the rapid development of my country's national economy, the scale and flow of motor vehicles have increased significantly, and the national motor vehicle volume has increased by more than 15% per year. As a result, vehicle-related incidents and cases have increased exponentially, severely punishing people's personal and property safety. caused huge losses to the country. In the 1990s, people carried out research on vehicle identification systems one after another. At the beginning of the 21st century, computer automatic identification technology for license plates appeared and was rapidly promoted and applied. It is widely used in running red lights, checkpoints, toll statio...

Claims

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Application Information

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IPC IPC(8): G06K9/20G06K9/62
Inventor 王枚潘国华
Owner 王枚
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