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Positioning method and device for magnetic safety thread

A positioning method and safety thread technology, which is applied in the field of safety thread identification, can solve problems such as inaccurate positioning of magnetic safety threads, errors in magnetic points, etc., and achieve the effect of improving the accuracy of positioning

Inactive Publication Date: 2019-04-26
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the large magnetic area of ​​the background pattern, and the number of magnetic points in this area is close to the number of magnetic points in the area of ​​the magnetic safety line, when the money detector is aged or polluted, there may be errors in the number of magnetic points obtained by the money detector, resulting in magnetic security. The problem of inaccurate positioning of the line

Method used

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  • Positioning method and device for magnetic safety thread
  • Positioning method and device for magnetic safety thread
  • Positioning method and device for magnetic safety thread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] figure 1 It is a flow chart of a positioning method for a magnetic safety thread in Embodiment 1 of the present invention. This embodiment is applicable to situations where it is necessary to locate a magnetic safety thread for feature detection of a RMB magnetic safety thread. The positioning device is implemented, wherein the device can be implemented by software and / or hardware, and the device can be integrated into the banknote verification device. refer to figure 1 The positioning method of the magnetic safety thread provided in this embodiment may specifically include the following steps:

[0057] S110. Acquire the region boundary of the magnetic region of the background pattern in the magnetic image.

[0058] Specifically, the magnetic area of ​​the background pattern is printed with magnetic ink, for example, the magnetic area of ​​the background pattern can be the magnetic area of ​​the Potala Palace of RMB 50, and so on. The regional boundary of the backgroun...

Embodiment 2

[0063] figure 2 It is a flowchart of a positioning method for a magnetic security thread in Embodiment 2 of the present invention. On the basis of Embodiment 1 above, this embodiment adds the magnetic region of the background pattern in the magnetic image according to the number of magnetic points in the middle magnetic channel. Optional technical solutions for the borders of the region. refer to figure 2 The positioning method of the magnetic safety thread provided in this embodiment may specifically include the following steps:

[0064] S210. Starting from the first channel of the magnetic image, search for the first magnetic channel whose number of magnetic points exceeds the set threshold along the increasing direction of the magnetic channel number, and use the first magnetic channel whose number of magnetic points exceeds the set threshold as a starting point magnetic channel.

[0065] Specifically, the set threshold may be 5, or other very small values. Starting f...

Embodiment 3

[0093] image 3 It is a structural diagram of a positioning device for a magnetic security thread in Embodiment 3 of the present invention. This embodiment is applicable to the situation where it is necessary to locate the magnetic security thread for feature detection of the RMB magnetic security thread. The device can be integrated into banknote verification in the device. refer to image 3 , the structure of the positioning device of the magnetic safety thread provided in this embodiment can be specifically as follows:

[0094] An acquisition module 310, configured to acquire the area boundary of the magnetic area of ​​the background pattern in the magnetic image;

[0095] The positioning module 320 is configured to determine the position of the magnetic safety thread in the magnetic image outside the boundary of the region according to the number of magnetic points in the magnetic channel, which is a column in the magnetic image.

[0096] Optionally, the acquisition mod...

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Abstract

According to the embodiments of the invention, a magnetic safety line positioning method and device are provided, which apply to a banknote checking apparatus. The method comprises the following steps: obtaining the boundary region of the background pattern's magnetic domain of a magnetic image; and in the magnetic image other than the boundary region, determining the position of the magnetic safety line according to the number of magnetic points in the magnetic channel wherein the magnetic channel is the column in the magnetic image. According to the invention, when a banknote checking machine ages or is contaminated, the use of the positioning method of the magnetic safety line in the prior art might lead to the inaccurate positioning. Therefore, with the invention, the positioning of magnetic safety line can be more accurately achieved in banknotes.

Description

technical field [0001] The embodiment of the present invention relates to a safety thread identification technology, in particular to a positioning method and device for a magnetic safety thread. Background technique [0002] The feature detection of the RMB security line is an important basis for the authenticity inspection of the RMB. Only after correctly locating the position of the magnetic security thread, the banknote detector can further detect the characteristics of the magnetic security thread, thereby improving the recognition rate of RMB. [0003] Taking RMB 50 as an example, the number of magnetic dots pre-set by magnetic ink is different in the magnetic area of ​​the background pattern, the magnetic area of ​​the serial number and the area of ​​the magnetic safety line. The positioning method of the existing magnetic security thread is to detect the preset magnetic points on the banknotes by the banknote detector, for example, the number of magnetic points and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07D7/04
CPCG07D7/04
Inventor 薛敏
Owner SHENZHEN YIHUA COMP