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Certificate making and detecting method based on wavelet analysis

A detection method and wavelet analysis technology, applied in image data processing, printing, instruments, etc., can solve the problems of expensive detection equipment, easy imitation, slow detection speed, etc., and achieve the effect of fast detection and recognition, fast and accurate recognition, and simple process.

Inactive Publication Date: 2007-01-31
侯遵泽
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In order to overcome the disadvantages of easy imitation, slow detection speed, and expensive detection equipment in the existing certificate production and detection methods, the purpose of the present invention is to provide a certificate production and detection method based on wavelet analysis. Decomposition and wavelet reconstruction method, a certain digital watermark used for encryption is hidden in the photo of the certificate holder or hidden in a certain detection page of the certificate

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  • Certificate making and detecting method based on wavelet analysis
  • Certificate making and detecting method based on wavelet analysis
  • Certificate making and detecting method based on wavelet analysis

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the drawings and embodiments.

[0027] figure 1 Shown is an embodiment of the method for making a certificate based on wavelet analysis of the present invention. The steps of the making method and the flow of the computer program are:

[0028] (1) Prepare a photo of the witness and a certificate card with the name of the certificate and the holder's information printed on the card, and input the information and original photo of the witness into the computer;

[0029] (2) Decompose the original photo into a multi-layer image by wavelet decomposition, figure 1 Wavelet decomposition of the original photos in the middle is the 1-n layer image, where (1) is the first layer image, and (k) is the kth layer;

[0030] (3) Add the determined encrypted digital watermark to a picture or pictures in step (2);

[0031] (4) Use the wavelet method to synthesize the layers to generate a certified photo with digita...

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Abstract

The invention relates to a certificate manufacture and detecting method based on wavelet analysis. It includes the following steps: taking wavelet analysis to the original photo output into computer to decompose to plural images; adding encrypted digital watermark into one or several images; compounding the image by wavelet method to generate certificate photo containing digital watermark, making certificate on computer by using the photo. The detecting process includes the following steps: reading certificate information in the photo by using reading device and displaying on computer screen, taking wavelet analysis to the photo to gain several resolution graph, distilling the digital watermark to take statistics and comparing, displaying the result on computer and distinguishing whether it is faked. The invention has simple technology, and could rapidly and accurately identify.

Description

Technical field [0001] The invention relates to a method for making and detecting an anti-counterfeiting certificate, in particular to a method for making and detecting a certificate based on wavelet analysis and digital watermark encryption. Background technique [0002] For a long time, the level of document production and the skill of forging documents have been on the rise. Examples of forgery of various documents have occurred frequently, seriously damaging national interests. For example, for passport documents, the existing anti-counterfeiting measures, methods and markings are all “visible” and can easily be imitated and forged; every time a new anti-counterfeiting measure is adopted, higher costs are required in terms of cost and craftsmanship. Cost; and the existing certificate detection equipment is expensive and the detection speed is slow. How to improve the anti-counterfeiting ability of document production and how to quickly and accurately identify the authenticity...

Claims

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Application Information

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IPC IPC(8): G06T1/00B42D15/10B42D25/21B42D25/333
Inventor 侯遵泽
Owner 侯遵泽
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