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Banknote forming mode inspection and identification method based on banknote printing pattern characteristics

A technology of printing patterns and identification methods, which is applied in the verification of the authenticity of banknotes, the processing of coins or valuable banknotes, character and pattern recognition, etc.

Active Publication Date: 2020-06-19
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no one has applied texture recognition technology to the identification and identification of counterfeit money

Method used

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  • Banknote forming mode inspection and identification method based on banknote printing pattern characteristics
  • Banknote forming mode inspection and identification method based on banknote printing pattern characteristics
  • Banknote forming mode inspection and identification method based on banknote printing pattern characteristics

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Experimental program
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Effect test

Embodiment 1

[0102] According to the present invention, a banknote formation method inspection and identification method based on banknote printing pattern features comprises the steps of:

[0103] Step 1, collect texture image: take four different printing methods of inkjet, four-color, laser and mechanism (such as figure 1 Shown) k pieces of banknotes, collect the texture image sample data of each banknote under a certain optical magnification and a certain light source environment;

[0104] 1.1. Prepare k pieces of banknotes of four different printing methods (mechanism, spot color, four-color, inkjet) that have appeared so far, k≥10; 2, 3, 4 four labels: inkjet: 1, four-color: 2, laser: 3, mechanism: 4;

[0105] 1.2 Collect the texture image of the first banknote at an optical magnification of 16 times and use a backlight light source environment; the specific collection method is:

[0106] 1.2.1 Use industrial cameras and equipped with lenses and other equipment to collect texture i...

Embodiment 2

[0178] For the four kinds of banknotes of inkjet, four-color, laser and mechanism, set four labels respectively: inkjet: 1, four-color: 2, laser: 3, mechanism: 4; take these four kinds of banknotes, each The number k of banknotes exceeds 10;

[0179] (1) According to the method of embodiment 1 step 1.2-1.4, collect the texture image of each banknote in a certain optical magnification and a certain use light source environment in 4k paper banknotes of four different printing methods; The collected texture image data n≥100, get 4k*n texture image (640*480) sample data.

[0180] (2) Carry out data enhancement to each image sample data in the collected 4k*n texture images according to the method in embodiment 1 step 2;

[0181] (3) According to the method of step 3 of embodiment 1, the image feature extraction is carried out to the enhanced image sample data; the texture image collected under the optical magnification of 60 and using the ring light source environment is enhanced ...

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Abstract

The invention discloses a banknote forming mode inspection and identification method based on banknote printing pattern characteristics. The method comprises the steps of texture image collection, image data enhancement, image feature extraction and image feature fusion; obtained image features and labels are added as a data set for training, and a trained SVM model under corresponding collectionconditions is obtained; data enhancement, feature extraction and feature fusion are carried out on texture images collected by a new banknote under various collection conditions; and performing imagefeature classification by using the trained SVM model to obtain each type of label and a probability value thereof, performing calculation according to the weight to obtain predicted labels and probability values thereof under various acquisition conditions, and performing recalculation according to the weight to obtain final labels of new banknotes. According to the method, counterfeit money is classified according to printing pattern characteristics, the printing forming mode of the counterfeit money is checked and identified from the printing forming mode of the counterfeit money, the counterfeit money can be rapidly and accurately recognized, consumed time is short, cost is low, and a public security department can be helped to conduct counter-reconnaissance treatment on the counterfeit money.

Description

technical field [0001] The invention belongs to the technical field of computer vision recognition, and relates to a banknote formation method inspection and identification method based on banknote printing pattern features. Background technique [0002] The legal tender of the People's Republic of China is the Renminbi, and the People's Bank of China is the competent authority in charge of the management of the Renminbi, responsible for the design, printing and distribution of the Renminbi. Other units that produce RMB are illegal units, called criminal gangs, and the RMB they produce is illegal, called counterfeit money. These counterfeit money and criminal gangs must be brought to justice. As we all know, some banks also have counterfeit money that cannot be distinguished by money detectors. This has brought difficulty in maintaining social order and chaos to social stability. This is a provocation to the national government. Therefore, it is necessary to solve the meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62G07D7/20
CPCG07D7/20G06V20/80G06F18/2411G06F18/214Y02P90/30
Inventor 朱子奇陆琪邹积鑫刘夕邓春华刘静
Owner WUHAN UNIV OF SCI & TECH
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