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Method and device for paper currency identification

A technology for counterfeiting and banknotes, applied in the field of counterfeiting banknotes, can solve the problems of high difficulty in counterfeiting, inability to identify counterfeit currency, difficult identification, etc., and achieve the effect of improving the efficiency of counterfeiting

Inactive Publication Date: 2017-03-15
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are many ways to make counterfeit banknotes, and some counterfeit banknotes can even look like real ones and are difficult to identify. For example, spliced ​​counterfeit banknotes circulating in the market. Most of these banknotes are composed of genuine banknotes, with only a small part of the area If the counterfeit part is faked, if the counterfeit part is not within the scope of this area, it will be impossible to identify such counterfeit money, which is very difficult to identify.

Method used

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  • Method and device for paper currency identification
  • Method and device for paper currency identification
  • Method and device for paper currency identification

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0050] figure 1 It is a flow chart of a banknote authenticating method provided in Embodiment 1 of the present invention. The method is suitable for counterfeiting banknotes. The method can be implemented by a banknote counterfeiting device. The device can be implemented by software and / or hardware, and is generally integrated into a banknote detector or an all-in-one deposit and withdrawal machine, etc. in the device. The method specifically includes:

[0051] S110. Obtain an infrared reflection image of the counterfeit banknote to be identified.

[0052] The banknotes to be authenticated are irradiated by an infrared light source, and the image of the banknotes to be authenticated under the irradiation of infrared light is obtained through a sensor located on the same side as the infrared light source. Reflected to the sensor, therefore, the acquired image is the infrared reflectance map. Exemplarily, Figure 2a It is an infrared reflection image of a 2005 version of RM...

Embodiment 2

[0066] Figure 5 It is a flow chart of a banknote authenticating method provided by Embodiment 2 of the present invention. This embodiment is optimized on the basis of the above embodiments, and the step of "determining the character area in the processed image" is carried out. In further refinement, the method includes:

[0067] S210. Obtain an infrared reflection image of the counterfeit banknote to be identified.

[0068] S220. In the infrared reflection image, compare the characteristics of the counterfeit banknote to be identified with the corresponding genuine currency, and determine a preset target area corresponding to the counterfeit banknote to be identified.

[0069] S230. Perform binarization processing on the preset target area to obtain a processed image.

[0070] Among them, the binarization of the image is to set the grayscale value of the pixels on the image to 0 or 255, that is, to present the entire image with an obvious visual effect of only black and whi...

Embodiment 3

[0088] Figure 7 It is a schematic diagram of a banknote authentication device provided in Embodiment 3 of the present invention, and the device includes:

[0089] The image acquisition module 310 is used to acquire the infrared reflection image of the counterfeit banknote to be identified;

[0090] The area determining module 320 is used to determine the preset target area corresponding to the counterfeit banknote to be identified according to the feature comparison between the counterfeit banknote to be identified and the corresponding genuine currency in the infrared reflection image;

[0091] A character area determining module 330, configured to determine a character area in the processed image;

[0092] The counterfeit banknote identification module 340 is configured to determine that the counterfeit banknote to be identified is a genuine banknote when the characteristic attribute of the character area satisfies a preset condition.

[0093] Further, the character area ...

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Abstract

The embodiment of the invention discloses a method and a device for paper currency identification. The method comprises steps: an infrared reflection map of to-be-identified paper currency is acquired; in the infrared reflection map, feature comparison is carried out on the to-be-identified paper currency and corresponding real paper currency, and a preset target region corresponding to the to-be-identified paper currency is determined; a to-be-detected character region is determined in the preset target region; and when the feature attributes of the to-be-detected character region meet a preset condition, the to-be-identified paper currency is judged to be forged paper currency. According to the embodiment of the invention, through detection on features of the character region in the target region, display features presented by the to-be-detected character region of the paper currency due to different material features are used for realizing targeted identification by using the abnormal display region in the paper currency image, and the identification efficiency is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of banknote inspection, and in particular to a method and device for authenticating banknotes. Background technique [0002] The existence and proliferation of counterfeit money have brought adverse effects on people's lives, and even threatened the safe operation of the financial industry, and even led to economic and social crises, disrupting the normal economic order of the country. With the advancement of science and technology, researchers have provided many methods for authenticating banknotes. [0003] However, there are many ways to make counterfeit banknotes, and some counterfeit banknotes can even look like real ones and are difficult to identify. For example, spliced ​​counterfeit banknotes circulating in the market. Most of these banknotes are composed of genuine banknotes, with only a small part of the area If the counterfeit part is faked, if the counterfeit part is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/0047G07D7/20G07D7/206
CPCG07D7/2008
Inventor 曹婧蕾
Owner SHENZHEN YIHUA COMP