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Method and device for detecting contamination of banknote serial number

A serial number and banknote technology, applied in the field of banknote detection, can solve problems such as contamination of the serial number of the banknotes, difficulty in identifying the serial number, etc.

Active Publication Date: 2019-12-10
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the circulation of banknotes, the serial number of banknotes may be defaced, which makes it difficult to identify the serial number. Therefore, it is necessary to detect the defacement of the serial number of banknotes

Method used

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  • Method and device for detecting contamination of banknote serial number
  • Method and device for detecting contamination of banknote serial number
  • Method and device for detecting contamination of banknote serial number

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0023] figure 1 It is a flow chart of a method for detecting defacement of banknote serial numbers provided by Embodiment 1 of the present invention. This embodiment is applicable to the detection of defacement of banknote serial numbers when the banknote serial numbers include red fonts. The serial number defaces the device to carry out, and this device can be realized by software and / or hardware, and generally can be integrated in the financial equipment such as ATM (Automatic Teller Machine, automatic teller machine), and this method specifically comprises the following steps:

[0024] Step 110, acquiring white light images and infrared reflection images of banknotes to be detected.

[0025] Wherein, the white light image is a white light reflection image, which is a color image.

[0026] When obtaining the white light image of the banknote to be detected, the banknote to be detected can be irradiated by a white light source located on one side of the banknote to be detect...

Embodiment 2

[0066] figure 2 It is a flow chart of a method for detecting the defacement of banknote serial numbers provided by Embodiment 2 of the present invention. On the basis of the above embodiments, this embodiment further includes: shielding the white light crown according to the location of the defacement. Contamination in the font size area; using a convolutional neural network to identify the serial number in the white light serial number area. The method specifically includes the following steps:

[0067] Step 210, acquiring white light images and infrared reflection images of banknotes to be detected.

[0068] Step 220, locate the serial number area in the white light image as the white light serial number area, and locate the serial number area in the infrared reflection image as the infrared serial number area.

[0069] Step 230, performing binarization processing on the area of ​​the white light serial number to determine a connected domain, and performing binarization p...

Embodiment 3

[0079] image 3 It is a structural schematic diagram of a device for detecting defacement of banknote serial numbers provided by Embodiment 3 of the present invention. The device can be implemented by software and / or hardware, and can generally be integrated in financial equipment such as ATM (Automatic Teller Machine, automatic teller machine) middle. Such as image 3 As shown, the device for detecting defacement of banknote serial numbers in this embodiment includes: an image acquisition module 310 , a serial number positioning module 320 , a binarization processing module 330 , a defacement detection module 340 and a defacement location determination module 350 .

[0080] Wherein, the image acquisition module 310 is used to acquire white light images and infrared reflection images of banknotes to be detected;

[0081] The serial number positioning module 320 is used to locate the serial number area in the white light image as the white light serial number area, and locate...

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Abstract

The invention discloses a method and apparatus for detecting contamination of a crowned serial number on a paper currency. The method includes the following steps: acquiring a white light image and an infrared reflection image of a to-be-detected paper note; positioning a crowned serial number region in the white light image, the crowned serial number region acting as a white light crowned serial number region, and positioning a crowned serial number region in the infrared reflection image, the crowned serial number region in the infrared reflection image acting as an infrared crowned serial number region; conducting binary processing on the white light crowned serial number region, determining a connected domain, conducting binary processing on the infrared crowned serial number region, determining a connected domain; on the basis of the connected domain of the infrared crowned serial number region, determining whether the crowned serial number of the to-be-detected paper note is contaminated; if the to-be-detected paper note is contaminated, on the basis of the connected domain of the white light crowned serial number region and the connected domain of the infrared crowned serial number region, determining the position of the contamination. According to the invention, by contrasting the connected domain of the white light crowned serial number region and the connected domain of the infrared crowned serial number region, the method herein can determine the position of the contamination and increases the accuracy of detecting contamination of crowned serial number.

Description

technical field [0001] The embodiments of the present invention relate to banknote detection technology, in particular to a method and device for detecting defacement of banknote serial numbers. Background technique [0002] The crown number is the code on the RMB banknotes. The "crown characters" are two or three English letters printed on the banknotes to mark the printing batches, which are arranged and printed by the banknote printing factory according to certain rules; The Arabic numeral serial number behind the prefix is ​​used to indicate the order in which each banknote is arranged in the batch with the same prefix. [0003] The serial number of banknotes may be defaced during the circulation process, which brings certain difficulties to the identification of the serial number. Therefore, it is necessary to detect the defacement of the serial number of banknotes. Contents of the invention [0004] In view of this, the embodiments of the present invention provide a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07D7/20G07D7/187G07D7/0047
CPCG07D7/187G07D7/2016
Inventor 唐辉平
Owner SHENZHEN YIHUA COMP
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