Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

License plate recognition method, device, equipment and storage medium

A license plate recognition and recognition method technology, applied in the field of license plate recognition methods, equipment and storage media, and devices, can solve problems such as the second digit of a blue ordinary license plate is not a letter, the letter D is confused, etc., so as to improve the accuracy and overcome the accuracy. low effect

Active Publication Date: 2022-05-17
BEIJING KUANGSHI TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing methods have many defects in the accuracy of recognition. The most important problem is that in order to be able to recognize some special heterogeneous license plates (such as license plates with non-Chinese characters at the beginning, abnormal Chinese character license plates such as embassies / police cars) Illegal characters are recognized in some positions, for example, the first digit of the ordinary blue license plate of the license plate is not a Chinese character, or the second digit of the ordinary blue license plate is not a letter, etc., or the letter D is confused with the number 0

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • License plate recognition method, device, equipment and storage medium
  • License plate recognition method, device, equipment and storage medium
  • License plate recognition method, device, equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0029]Since there are many defects in the recognition accuracy of the existing license plate recognition method, in order to make up for this defect to improve the recognition accuracy, this embodiment firstly provides a license plate recognition method. It should be noted that, in the flowchart diagram of the accompanying drawing The steps shown can be implemented in a computer system, such as a set of computer-executable instructions, and, although a logical order is shown in the flowcharts, in some cases, the steps shown can be performed in an order different from that shown here. or the steps described. This embodiment will be described in detail below.

[0030] see figure 1 , is a flow chart of the license plate recognition method provided by the embodiment of the present invention. The following will be figure 1 The specific process shown will be described in detail.

[0031] Step S101, acquiring the license plate recognition result recognized by the bit-by-digit rec...

no. 2 example

[0073] Corresponding to the license plate recognition method in the first embodiment, Figure 4 It shows a one-to-one license plate recognition device using the license plate recognition method shown in the first embodiment. like Figure 4 As shown, the license plate recognition device 400 includes an acquisition module 410, a first data processing module 420, a second data processing module 430 and a third data processing module 440. Wherein, the implementation functions of the acquisition module 410, the first data processing module 420, the second data processing module 430, and the third data processing module 440 are in one-to-one correspondence with the corresponding steps in the first embodiment. To avoid redundant description, this embodiment Not detailed one by one.

[0074] The acquiring module 410 is configured to acquire the license plate recognition result recognized by the bitwise recognition method.

[0075] The first data processing module 420 is configured ...

no. 3 example

[0084] like Figure 5 As shown, is a schematic diagram of a terminal device 300 . The terminal device 300 includes a memory 302, a processor 304, and a computer program 303 stored in the memory 302 and operable on the processor 304. When the computer program 303 is executed by the processor 304, the first implementation is realized. The license plate recognition method in the example, in order to avoid repetition, will not be repeated here. Alternatively, when the computer program 303 is executed by the processor 304, the functions of each model / unit in the license plate recognition device of the second embodiment are realized, and in order to avoid repetition, details are not repeated here.

[0085]Exemplarily, the computer program 303 can be divided into one or more modules / units, and one or more modules / units are stored in the memory 302 and executed by the processor 304 to implement the present invention. One or more modules / units may be a series of computer program inst...

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

PUM

No PUM Login to View More

Abstract

The license plate recognition method, device, equipment and storage medium provided by the invention belong to the technical field of image processing. The method includes: obtaining a license plate recognition result identified by a digit recognition method; determining a hypothetical license plate recognition result corresponding to the multiple preset license plate types one-to-one according to the processing rules and the license plate recognition results of multiple preset license plate types; Confidence levels corresponding to multiple assumed license plate recognition results are determined; the assumed license plate recognition result corresponding to the largest confidence level is selected from the multiple confidence levels as the target license plate recognition result. By generating hypothetical license plate recognition results corresponding to multiple preset license plate types one-to-one, the heterogeneous license plate will retain a high degree of confidence, and the confidence of the wrong type of license plate will be greatly reduced after the above processing, and then by comparing The confidence level of the license plate recognition results after passing different preset license plate types of processing rules, thereby effectively improving the accuracy of license plate recognition.

Description

technical field [0001] The present invention relates to the field of image processing, in particular, to a license plate recognition method, device, equipment and storage medium. Background technique [0002] License plate detection and recognition technology has always been an important part of the security monitoring environment. For example, in automatic parking lot monitoring, high-speed bayonet monitoring and other application scenarios, there is a need to clearly recognize the license plate in the screen. Therefore, the existing license plate recognition technology has also been systematically developed. Among the many algorithms, classification algorithms are usually used to classify each character of the license plate bit by bit to obtain a predicted character and the confidence level of the character. The final result is obtained by splicing the results of the license plate together, and the recognition confidence of the license plate is obtained by multiplying the ...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06V30/148G06V10/22
CPCG06V10/23G06V30/153
Inventor 邵帅史雨轩
Owner BEIJING KUANGSHI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com