A method for intelligently correct that result of license plate recognition

Abstract

The invention discloses a method for intelligently correct that result of license plate recognition, comprising the following steps: 1. Constructing a mapping table C between abbreviated Chinese characters of 31 provinces, autonomous regions and municipalities directly under the Central Government and code names of license plate issuing organs; constructing a license plate character set P; 2, taking m license plate images and utilizing automatic license plate recognition technology to obtain a corresponding recognition result Ui; and then manually identifying, step 3, according to the error identification matrix Mnxn obtained in step 2, at first, performing statistics on the probability that all letter in the set P are mistakenly recognized, obtaining the set R and based on the set R, calculating a set of false recognition weights, step 4, obtaining a result string L of a license plate recognized by an automatic license plate recognition technology, adding the characters in L sequentially into the empty set H, and step 5: correcting the recognition result of the license plate character set H obtained in step 4. The beneficial effect of the invention is that the method can intelligently correct the recognition result of the common single-line blue card and the single-line yellow card, thereby reducing the human workload.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic recognition, in particular to an intelligent correction method for automatic recognition results of license plate number images. Background technique [0002] GA36 stipulates the classification, specifications, colors, scope of application, style, technical requirements, test methods, inspection rules, packaging, replacement, enlargement and supervision and management of motor vehicle license plates. The standards related to GA36-2014 include GB / T-2260 (Administrative Division Code of the People's Republic of China) and GA-802 (Motor Vehicle Types, Terms and Definitions), etc. [0003] Motor vehicle license plate (license plate of motor vehicle) is a legal sign that allows motor vehicles to drive on roads within the territory of the People's Republic of China, and its number is the registration number of the motor vehicle. When handling the motor vehicle registration business, the num...

AI Technical Summary

Problems solved by technology

[0008] To sum up, the current correction methods for license plate recognition results have the following deficiencies: 1) Manual correction methods are labor-intensive; 2) Intelligent correction methods rely on additional information provided by the license plate recognition system, such as issued license plate numbers, checkpoint passing records and the confidence of recognition results, etc., the applicable occasions are limited; 3) There are various license plate formats, and it is difficult to automatically correct

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