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Method and device for banknote currency identification

A recognition method and a technology of a recognition device, which are applied in the field of banknote currency recognition, can solve the problems of low efficiency of RMB currency recognition, achieve rapid recognition and improve recognition efficiency

Active Publication Date: 2019-04-09
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a banknote currency type identification method and device, aiming to solve the problem of low efficiency of RMB currency type identification in the prior art

Method used

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  • Method and device for banknote currency identification
  • Method and device for banknote currency identification
  • Method and device for banknote currency identification

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] figure 1 It shows the implementation process of a banknote currency identification method provided by the first embodiment of the present invention. For the convenience of explanation, only the parts related to the first embodiment of the present invention are shown, and the details are as follows:

[0025] In step S101, a banknote image corresponding to the banknote is acquired.

[0026] In step S102, the image of the preset identification area is intercepted from the banknote image; the preset identification area is the front face of the banknote facing the upper left corner.

[0027] Wherein, between step S101 and step S102, it may further include the steps of identifying the front and back of the banknote and the front and back of the banknote on the acquired banknote image, and performing tilt correction on the banknote image.

[0028] Taking a 100-yuan paper RMB as an example, the obverse of the banknote refers to the side containing Mao Zedong’s head portrait an...

Embodiment 2

[0040] This embodiment is a description of the specific implementation of step S103 in the first embodiment of the present invention. image 3 The specific implementation process of step S103 is shown, and the details are as follows:

[0041]In step S1031, edge detection is performed on the image of the preset recognition area, and a corresponding edge image is acquired. Step S1031 is specifically: performing edge detection on the image of the preset recognition area according to the Sobel operator, the compass operator or the Canny operator, and obtaining the corresponding edge image.

[0042] Among them, the Sobel operator is a discrete first-order difference operator, which is used to calculate the approximate value of the first-order gradient of the image brightness function. Using this operator at any point in the image will generate the gradient vector corresponding to the point or its Law vector. This operator is mainly used to obtain the first-order gradient of a dig...

Embodiment 3

[0064] This embodiment is a description of the specific implementation of step S103 in the first embodiment of the present invention. Figure 4 The specific implementation process of step S103 is shown, and the details are as follows:

[0065] In step S2031, edge detection is performed on the image of the preset recognition area, and a corresponding edge image is obtained. Step S2031 is specifically: performing edge detection on the image of the preset recognition area according to the Sobel operator, the compass operator or the Canny operator, and obtaining the corresponding edge image.

[0066] Among them, the Sobel operator is a discrete first-order difference operator, which is used to calculate the approximate value of the first-order gradient of the image brightness function. Using this operator at any point in the image will generate the gradient vector corresponding to the point or its Law vector. It is mainly used to obtain the first-order gradient of digital images...

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Abstract

The invention provides a banknote type identification method and device, and belongs to the field of banknote type identification. A banknote image corresponding to a banknote is obtained; an image of a preset identification area is cut out of the banknote image, and the preset identification area is an area in the left upper corner, when the banknote is placed in the correct direction, of the front side of the banknote; and corresponding features are extracted from the image of the preset identification area, whether the features match preset national-emblem features of CNY are determined, if yes, the banknote is determined to be CNY, and otherwise, the banknote is determined not to be CNY. The CNY banknote is identified by utilizing the national-emblem features, the CNY banknote can be identified rapidly, and the CNY banknote identification efficiency is improved.

Description

technical field [0001] The invention belongs to the field of banknote currency identification, and in particular relates to a banknote currency identification method and device. Background technique [0002] Banknote image recognition is a relatively active research topic in the field of pattern recognition and has broad application prospects. Banknote sorting machines are typical equipment for this technology, which is playing an increasing role in the financial system. In daily life, automatic vending machines and banknote counters are also inseparable from banknote image recognition technology. Generally speaking, automatic vending machines and banknote counters have relatively high real-time requirements, especially banknote sorting machines, which generally require that banknote image recognition be completed within 40ms. The identification of banknote currency is an important content in banknote image recognition, and it is the basis and premise of banknote image rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07D7/206
CPCG07D7/20G07D7/2016
Inventor 曹婧蕾
Owner SHENZHEN YIHUA COMP