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Certificate making and detecting method based on wavelet analysis

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

Inactive Publication Date: 2008-11-12
侯遵泽
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 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 wavelet analysis-based electronic certificate production and detection method. When making certificates, wavelet Multiple 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

Method used

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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

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] figure 1 Shown is an embodiment of the electronic certificate production method based on wavelet analysis of the present invention, the steps of the production method and the flow of the computer program are:

[0030] (1) Prepare a photo of the person applying for the certificate and a card with the name of the certificate and the information of the holder printed on the card, and input the information of the person handling the certificate and the original photo into the computer;

[0031] (2) Decompose the original photo into a multi-layer graph by wavelet decomposition, figure 1 The original photo wavelet is decomposed into 1-n layer graphs, where (1) is the first layer graph, and (k) is the kth layer;

[0032] (3) adding the determined encrypted digital watermark to a certain picture or several pictures in the step (2);

[0033] (4) Use th...

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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-counterfeit certificate, in particular to a method for making and detecting an electronic certificate based on wavelet analysis and digital watermark encryption. Background technique [0002] For a long time, the production level of certificates and the skills of forging certificates have been rising, and the cases of forgery of various certificates have occurred frequently, seriously damaging national interests. For example, passport documents, the existing anti-counterfeiting measures, means and marks are all "visible" and are easy to be imitated and forged; every time a new anti-counterfeiting measure is adopted, a higher cost will be paid in terms of cost and process. Cost; and the detection equipment of existing certificate is expensive, and detection speed is slow. How to improve the anti-counterfeiting ability of document production, how to use invisible anti-counterfeiting mark...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00B42D15/10B42D25/21B42D25/333
Inventor 侯遵泽
Owner 侯遵泽
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