Picture retrieval method-based vehicle license plate recognition system and method

Abstract

The invention discloses a picture retrieval method-based vehicle license plate recognition method and system. Recognition theory of the method comprises the following steps of: obtaining a video streaming; positioning and tracking target vehicle license plates in the video streaming, and extracting a plurality of target vehicle license plates; respectively extracting feature values of the plurality of target vehicle license plates so as to obtain a plurality of target vehicle license plate feature values; combining the plurality of target vehicle license plate feature values to obtain a targetvehicle license plate feature value group; and comparing a feature value of a to-be-searched vehicle license plate with the target vehicle license plate feature value group and outputting a search result. According to the method and system, feature values of to-be-searched vehicle license plates are compared and matched with the target vehicle license plate feature values obtained in a monitoringmanner so as to realize the vehicle license plate search, and the vehicle license plate numbers in monitoring do not need to be specifically recognized, so that the vehicle license plate search efficiency and correctness can be remarkably improved; and meanwhile, fuzzy vehicle license plates obtained in monitoring also can be accurately recognized without recognizing the vehicle license plate numbers.

Description

Technical field [0001] The invention relates to the field of license plate recognition, in particular to a license plate recognition system and method based on a picture retrieval method. Background technique [0002] As one of the main means of transportation in modern society, automobiles are being used more and more in people's lives and work. How to effectively monitor and manage vehicles becomes more and more important. The realization of vehicle monitoring without the need to install other devices on the vehicle is a basic requirement for the automated management of the traffic and public security industry systems. Therefore, the automatic identification system of vehicle license plates is one of the key technologies for realizing traffic vehicle management and control. [0003] At the same time, we should also see that the rapid and timely search and tracking of specific vehicles has a great demand for vehicle management and control in the traffic and public security industr...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention of the present invention is to: aim at the above existing problems, provide a vehicle search problem through the existing monitoring network; solve the problem of efficient matching of license plates in the search process; solve the problem of specific identification in traditional license plate recognition Obtaining the license plate number, and then matching it with the searched license plate number brings about: monitoring high pixel requirements, time-consuming issues, and low recognition of license plate occluders

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