Two-time screening method for cars with false license plates based on probability distribution

Abstract

A two-time screening method for cars with false license plates based on probability distribution comprises the following steps that firstly, traffic flow recording data of bayonets is obtained and subjected to data cleaning, and traffic flow recording data of the bayonets is obtained; secondly, the traffic flow recording data of the bayonets is sorted, and traffic through bayonet vector pairs are extracted; thirdly, the spatial probability distribution of vehicle flows between the bayonets is calculated; fourthly, the bayonet records are compared with a data base, and a primary screened false license plate set is obtained; fifthly, based on the spatial probability distribution of the vehicle flows in the third step, license plates meeting the spatial probability distribution are obtained in the primary screened false license plate set; sixthly, according to the spatial probability distribution of the vehicle flows, each character recognition error probability is determined; seventhly, according to the probability that the license plates meet the spatial probability distribution and the character recognition error probabilities, the probability that the license plates are false is comprehensively judged. By means of the two-time screening method, the bayonet recognition precision deficiency can be overcome to a certain extent, the false license plate checking range can be effectively narrowed, and the hitting precision can be improved.

Description

Technical field [0001] The invention belongs to the field of intelligent transportation, and in particular relates to a secondary screening method for false license vehicles based on probability distribution. Background technique [0002] In recent years, with the continuous development of my country's national economy, the number of motor vehicles has continued to increase, and various traffic violations have also increased day by day. Among them, "fake licenses" and "card decks" are illegal acts with serious harm. The phenomenon of vehicle "fake license plates" refers to the phenomenon that vehicles forge or alter motor vehicle license plates, and illegally use license plate numbers that do not exist in the vehicle registration information of the motor vehicle management office. [0003] "Fake cards" can cause serious harm. Vehicles using fake license plates often speed and do not follow traffic lights, which seriously disrupts traffic order. In the event of a traffic accident,...

AI Technical Summary

Problems solved by technology

[0007] The above methods have some disadvantages in practical application: the first detection and recognition method based on auxiliary equipment needs to install additional equipment for motor vehicles, which is difficult to promote in reality; Large impact, low accuracy

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