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Method and device for detecting folded corners of banknotes

A detection method and banknote technology, applied in the inspection of the authenticity of banknotes, handling coins or valuable banknotes, instruments, etc.

Active Publication Date: 2020-10-20
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technical solution can identify the folded corners of banknotes, but it is necessary to obtain multiple image data of banknotes that match each other at the same time

Method used

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  • Method and device for detecting folded corners of banknotes
  • Method and device for detecting folded corners of banknotes
  • Method and device for detecting folded corners of banknotes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] figure 1 It is a flow chart of a method for detecting creases of banknotes provided by Embodiment 1 of the present invention. The method can be executed by a device for detecting creases of banknotes. The device can be implemented by software and / or hardware. The device can be integrated in any Among financial devices that need to identify banknotes, for example, banknote validators, banknote counting machines, or sorting machines are typical examples. Specifically include the following steps:

[0045] S110. Find whether there is an abnormal thickness area in the thickness data of one or two channels at both ends of the banknote to be detected.

[0046] Wherein, one channel at both ends of the detected banknote refers to the leftmost channel and the rightmost channel among all the channels of the thickness data corresponding to the banknote to be detected, two channels in total. The two channels for detecting both ends of the banknote refer to the leftmost two channel...

Embodiment 2

[0068] Figure 4 It is a flow chart of a banknote crease detection method provided by Embodiment 2 of the present invention. In this embodiment, on the basis of the above embodiments, step S110 is optimized to step S410 to step S440. Wherein, the same steps or diagram units as those in the above embodiments are assigned corresponding reference numerals, and explanations of terms that are the same as or corresponding to those in the above embodiments will not be repeated here. Combine below Figure 4 The method for detecting the creases of banknotes provided in Embodiment 2 of the present invention will be described. The method of this embodiment includes:

[0069] S410. Extract single-channel thickness data in each of the one or two channels.

[0070] Specifically, according to the description of one channel or two channels at each two ends of the banknote to be detected in step S110, extracting the single-channel thickness data in each of the one or two channels is to obtai...

Embodiment 3

[0091] Figure 6 It is a schematic structural diagram of a banknote crease detection device provided in Embodiment 3 of the present invention, and explanations of terms in this embodiment that are the same as or corresponding to any of the above embodiments will not be repeated here. The device can include:

[0092] The abnormal thickness area search module 610 is used to find whether there is an abnormal thickness area in the thickness data of one or two channels at both ends of the banknote to be detected.

[0093] The starting and ending line number recording module 630 is configured to record the starting and ending line numbers and the corresponding channel number of the abnormal thickness area if the abnormal thickness area search module 610 determines that the abnormal thickness area exists.

[0094] The length comparison result determination module 640 is used to determine the thickness data length of the corresponding channel number according to the start and end lin...

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Abstract

The embodiment of the invention discloses a method and device for detecting a folded corner of paper money. The method comprises the steps: determining whether there is a thickness abnormality regionin the thickness data of each one or two channels of two ends of to-be-detected paper money or not through searching; recording start and stop line numbers and corresponding channel numbers of the thickness abnormality region if there is the thickness abnormality region; determining the length of the thickness data of the corresponding channel number according to the start and stop line numbers, comparing the length of the thickness data with a preset paper money length, and obtaining a length comparison result; determining the existence of the folded corner of the to-be-detected paper money according to the length comparison result. According to the above technical scheme of the invention, the method achieves the detection of the folded corner of the to-be-detected paper money through thethickness data of the to-be-detected paper money, and can reduce the data processing burden and calculation time.

Description

technical field [0001] The embodiments of the present invention relate to banknote processing technology, and in particular to a method and device for detecting folded corners of banknotes. Background technique [0002] Banknotes that have circulated in the market for a long time will inevitably have folded corners. Such banknotes with folded corners are easily recognized as abnormal banknotes by banknote detection equipment, thereby affecting the recognition rate of banknotes. [0003] In the prior art, there is a scheme for detecting and identifying the folded corners of banknotes by using the image data of banknotes. In this scheme, the missing area of ​​the banknote in the four corners of the banknote is first found in the infrared reflection image of the banknote, and then the edge detection is performed on the area. It is judged whether there is a straight edge with a knuckle in the area, and finally the infrared transmission image is used to determine whether the miss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07D7/164G07D7/183
CPCG07D7/164
Inventor 旺静然
Owner SHENZHEN YIHUA COMP