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License plate recognition method and system under complicated illumination

A license plate recognition and license plate technology, applied in the field of image processing, can solve problems such as license plate recognition, and achieve the effect of improving the recognition rate

Active Publication Date: 2014-01-22
NEUSOFT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above problems, the purpose of the present invention is to provide a license plate recognition method and system under complex lighting to solve the problem of license plate recognition in complex lighting environments

Method used

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  • License plate recognition method and system under complicated illumination
  • License plate recognition method and system under complicated illumination
  • License plate recognition method and system under complicated illumination

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Embodiment Construction

[0040] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] Aiming at the problem of low license plate recognition rate of the license plate recognition method in the aforementioned prior art under complex lighting environment, the present invention locates the license plate and character segmentation of multiple candidate positions, and integrates the result of character recognition through the probability graph model, Then the best segmentation and recognition results are obtained through the BP process, which solves the problem of license plate recognition in complex lighting environments.

[0042] figure 1 A schematic flow chart of a license plate recognition method under complex illumination according to an embodiment of the present invention is shown.

[0043] Such as figure 1 As shown, the license plate recognition method under complex illumination of the present invention comprises:

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Abstract

The invention provides a license plate recognition method and system under complicated illumination. The method comprises: a license plate is positioned and character segmentation is performed on multiple candidate positions; a probability value of each character segmentation position in the segmented candidate positions is obtained via a pre-constructed probabilistic graphical model, a correlation potential function and an interaction potential function; and then the optimized segmented position of characters is obtained according to the probability value. License plate recognition problem in a complicated illumination environment can be solved by the license plate recognition method and system under complicated illumination so that license plate recognition rate is enhanced.

Description

technical field [0001] The present invention relates to the technical field of image processing, and more specifically, to a license plate recognition method and system under complex illumination. Background technique [0002] With the development of the economy and the popularization of vehicles, the way of traffic management gradually tends to be intelligent, safe and automatic. For this reason, intelligent traffic and electronic police systems based on multimedia and artificial intelligence technology have been widely used in the world. application. In these applications, more than 75% of the systems are centered on license plate recognition, such as: speeding system, red light system, bayonet system, path recognition system, etc., all need to recognize the license plate of vehicles passing through the entire traffic flow section. [0003] License plate recognition refers to obtaining the license plate area in a certain area of ​​the image from static or dynamic video im...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/34
Inventor 邹博周宇弘李锋邹达高飞
Owner NEUSOFT CORP
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