Method for preparing hidden two-dimensional image holographic anti-counterfeit label and identification device thereof

A holographic anti-counterfeiting and identification device technology, which is applied in the direction of recording carriers used in machines, instruments, electromagnetic radiation induction, etc., can solve the problem of low anti-counterfeiting strength of exposed two-dimensional code images, and achieve the effect of improving anti-counterfeiting performance

Inactive Publication Date: 2014-06-18
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention provides a method for preparing a holographic anti-counterfeit label with a hidden two-dimensional code image, and at the same time provides

Method used

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  • Method for preparing hidden two-dimensional image holographic anti-counterfeit label and identification device thereof
  • Method for preparing hidden two-dimensional image holographic anti-counterfeit label and identification device thereof
  • Method for preparing hidden two-dimensional image holographic anti-counterfeit label and identification device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1, the method for preparing the holographic anti-counterfeiting label that hides the two-dimensional code image, comprises the following steps:

[0058] (1) The selected Chinese character "National Anti-Counterfeiting Engineering Technology Research Center" is encrypted through the Advanced Encryption Standard Algorithm (AES) to obtain the data symbol ciphertext;

[0059] (2) The two-dimensional code generator composed of the data symbol ciphertext through the computer code written by oneself, according to the national standard GB / T18284-2000, generates the two-dimensional code image, such as figure 2 shown;

[0060] (3) Carry out Fourier transform to described two-dimensional code image, obtain corresponding Fourier transform spectrogram;

[0061] (4) For the Fourier transform spectrogram, obtain a discrete hologram transmittance function through Roman encoding, and then draw it into an information-modulated fringe image, such as image 3 shown;

[0062]...

Embodiment 2

[0067] Embodiment 2, the method for preparing the holographic anti-counterfeit label that hides the two-dimensional code image, comprises the following steps:

[0068] (1) Encrypt the selected alphanumeric data "HUST" through the data encryption algorithm (DES) to obtain the data symbol ciphertext;

[0069] (2) Pass the data symbol ciphertext through the two-dimensional code generator online in the network, and generate the two-dimensional code image according to the national standard GB / T18284-2000, such as Figure 5 shown;

[0070] (3) Carry out Fourier transform to described two-dimensional code image, obtain corresponding Fourier transform spectrogram;

[0071] (4) For the Fourier transform spectrogram, obtain a discrete hologram transmittance function through Roman encoding, and then draw it into an information modulation fringe image;

[0072] (5) reducing the information-modulated fringe image to 1 mm × 1 mm through a micro-process to form a square micro-stripe image;...

Embodiment 3

[0077] Example 3, such as Image 6 As shown, the identification device for the two-dimensional code image includes a laser light source 1, a full mirror 2, a label platform 3, a frosted glass sheet 4, an image sensor 5, a signal acquisition module 6, an identification module 7, a display screen 8 and a voice announcer 9 ;

[0078] Make the instrument box, assemble the laser light source 1, the total reflection mirror 2, the frosted glass sheet 4, the image sensor 5, the signal acquisition module 6 and the identification module 7 together in the instrument box, and fix the label platform 3 on one side of the instrument box, and the instrument box This side is provided with opening, is used for reflecting light to irradiate label platform 3, and the anti-counterfeiting label that embodiment 2 is made is placed on label platform 3; In this device, display screen 8, voice announcer 9 are installed on the instrument box surface , for presenting the recognition result of the recogn...

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Abstract

The invention provides a method for preparing a hidden two-dimensional image holographic anti-counterfeit label and an identification device thereof, belongs to the field of preparation and identification of anti-counterfeit labels, and solves the problem that the anti-counterfeit degree of an existing naked two-dimensional image is not high. The method comprises the following steps that a data symbol cryptograph is sequentially obtained, a two-dimensional image is generated, a Fourier transform conversion spectrogram is obtained, an information modulation strip image is drawn, square micro-strip images are formed, the plurality of square micro-strip images are arrayed to form a combined pattern, the combined pattern is made into an embossment pattern mother board and finally, the embossment pattern mother board is copied to a label material. The identification device comprises a laser light source, a full-reflection mirror, a label platform, a ground glass sheet, an image sensor, a signal acquisition module, an identification module, a display screen and a voice broadcasting device. According to the method, a hidden two-dimension code diffraction grating strip encrypted by information is manufactured on the holographic anti-counterfeit label and the identification needs special treatment; meanwhile, the information is encrypted and the anti-counterfeit performance is greatly improved.

Description

technical field [0001] The invention belongs to the field of anti-counterfeit label preparation and identification, and in particular relates to a method for preparing a holographic anti-counterfeit label with a hidden two-dimensional code image and an identification device thereof. Background technique [0002] The combination of physical anti-counterfeiting and information anti-counterfeiting technology has become the development trend of today's anti-counterfeiting technology. In terms of traditional physical anti-counterfeiting, holographic anti-counterfeiting labels have been widely used; in terms of information anti-counterfeiting, two-dimensional codes are currently the mainstream technology in the field of information anti-counterfeiting and automatic identification, and have been widely used in anti-counterfeiting and information traceability; The combination of two-dimensional code information anti-counterfeiting is a good combination of physical anti-counterfeitin...

Claims

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Application Information

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IPC IPC(8): G06K19/06G06K7/10
Inventor 曹汉强陈汝钧姜志博庞飞
Owner HUAZHONG UNIV OF SCI & TECH
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