License plate locating method

A technology of license plate positioning and license plate, which is applied in the field of image processing, can solve the problems of poor anti-interference, difficulty in applying the license plate positioning method, and low robustness, and achieve the effect of accurate license plate positioning method, excellent positioning effect and wide application range

Active Publication Date: 2013-03-27
SHENZHEN TENCENT COMP SYST CO LTD
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  • Abstract
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Problems solved by technology

[0005] However, most of the existing license plate location methods are based on color or texture features, which are only suitable for scenes with little background changes such as toll booths and security cards. This kind of natural environment scene, its background is ever-changing, especially for those panoramas containing a lot of trees and striped texture items, the existing license plate positioning method is difficult to apply
Moreover, the existing license plate positioning methods have high requirements for the quality of the collected pictu...

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[0031] In order to further explain the technical means and effects that the present invention adopts to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation methods, methods, steps, structures, and features of the license plate location method proposed according to the present invention will be described below. and its effects are described in detail below.

[0032] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of specific implementation methods, the technical means and effects of the present invention to achieve the intended purpose can be understood more deeply and specifically, but the attached drawings are only for reference and description, and are not used to explain the present inv...

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Abstract

The invention relates to a license plate locating method. The license plate locating method includes: detecting colors of an acquired panorama and extracting a specified-color region in the panorama as a license plate candidate region; extracting edge features of the license plate candidate region and segmenting the license plate candidate region by the edge features to generate a license plate candidate region set; correcting inclination of the license plate candidate regions in the license plate candidate region set; verifying each license plate candidate region in the license plate candidate region set to remove non-license-plate regions so as to obtain a license plate region. The license plate locating method allows for accurate locating of license plates in the complex-scene panorama and is widely applicable and well anti-interference.

Description

technical field [0001] The invention relates to image processing technology, in particular to a license plate location method based on a complex panorama. Background technique [0002] With the rapid development of economy and transportation, motor vehicles have increased significantly, and the monitoring and management of motor vehicles is one of the problems we are currently facing. And the license plate number is an important sign of a motor vehicle, and the positioning and recognition technology of a motor vehicle license plate number (abbreviated as a license plate) is widely used in various occasions such as toll stations and parking lots to realize automatic monitoring and management of motor vehicles. Save manpower and material resources. Among them, the license plate location technology is a key step of the license plate recognition technology, only when the position of the license plate is accurately located, can the license plate be accurately recognized. [000...

Claims

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Application Information

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IPC IPC(8): G06K9/32G06K9/54
Inventor 邓海峰李保利
Owner SHENZHEN TENCENT COMP SYST CO LTD
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