High efficiency accurate license plate identification method

A license plate recognition and license plate technology, which is applied in the field of intelligent transportation, can solve problems such as imperfection and reduce the efficiency of license plate recognition algorithms, and achieve the goal of avoiding poor robustness, improving robustness and applicability, and improving accuracy and robustness. Effect
CN107239778AActive Publication Date: 2017-10-10UNIV OF SCI & TECH OF CHINA
5 Cites 22 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH OF CHINA
Publication Date
2017-10-10

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a high efficiency accurate license plate identification method comprising the following steps: carrying out license plate compactification treatment on an input license plate image so as to obtain a compactification license plate image; using a pre-trained all convolution nerve network model to carry out license plate integral identification, thus obtaining prediction results of each pixel point character class in the compactification license plate image, and forming a label score matrix; parsing the label score matrix so as to obtain the final license plate string information. The method needs no character segmentation, thus solving the problems that an existing method is poor in character segmentation robustness; in addition, the method uses the all convolution nerve network model to carry out license plate integral identification, only one identification process is needed, so the algorithm efficiency is high; the complete context information of the license plate can be combined in the identification process, thus greatly improving the identification accuracy and robustness; finally, in label matrix analysis, the method can carry out difference treatments on different license plate and characters, thus further improving the algorithmic robustness and applicability.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of intelligent transportation, in particular to an efficient and accurate license plate recognition method. Background technique

[0002] With the development of video surveillance technology and deep learning technology, intelligent transportation system has become the development direction of the future transportation system, which can alleviate the increasing urban traffic congestion, reduce traffic violations and vicious traffic accidents, and provide a comprehensive solution for various traffic accidents and personal injuries. The post-processing of property safety provides strong evidence. In this process, the license plate number plays a vital role as a unique identity representation of motor vehicles, so the license plate recognition system is one of the important components of the intelligent transportation system.

[0003] The current traditional method of license plate recognition mainly includes...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More