Automobile license plate automatic recognition method and implementing device thereof

Abstract

The invention discloses a locomotive license automatic identifying method and a realizing device thereof for shooting video in real time under a complex background; wherein, the identifying steps include: (1) locating a movement multi-target locomotive body area; (2) capturing a candidate license area image; (3) capturing a real license edge point; (4) capturing the smallest license area; (5) dividing characters and removing non-character images;(6) normalizing the character images and extracting the original coarse gridding characteristics of the character images; (7) using a trained BP neutral network for realizing the accurate identification of the license characters. The device for realizing the locomotive license automatic method includes a pick-up device and a computer; the pick-up device is connected with the computer by an IEEE1394 cable. The invention is suitable for the automatic identifying method and the realizing device thereof for dividing and identifying the locomotive licenses which are not interfered by the shoot traffic video image quality under a complex background with good identifying effects to the characters.

Description

technical field [0001] The invention relates to a technology for automatic recognition of motor vehicle license plates, in particular to a method for automatic recognition of motor vehicle license plates based on real-time camera video under complex backgrounds and an implementation device thereof. Background technique [0002] With the rapid development of society and economy, the number of vehicles has also increased sharply, resulting in serious traffic problems, which have become a major problem faced by countries all over the world. On the other hand, the rapid development of advanced technical means such as network communication technology, computer technology, and database provides a technical foundation for the establishment of efficient intelligent transportation management systems (Intelligent Transportation Systems, ITS). License Plate Recognition (LPR) technology, as an important means of traffic management automation, is widely used in road toll management syste...

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the shortcomings of the existing automatic recognition methods of motor vehicle license plates, such as poor license plate positioning effect under complex background, character segmentation algorithm is greatly affected by license plate image quality, and recognition algorithm is not good for low-quality character images and Chinese character recognition. The invention provides a motor vehicle license plate automatic recognition method and its implementation device which are suitable for complex backgrounds, are not interfered by the quality of the captured traffic video images, and have a good recognition effect on Chinese characters.

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