Printing medium certificate documents and false proof handling method of copy thereof

A printing medium and processing method technology, applied in the field of information processing, can solve the problems of few tamper-proof technologies, unable to completely solve the problems of printing medium certificates and documents, embedding a large amount of information, etc.
CN1928916AActive Publication Date: 2007-03-14顾泽苍
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
顾泽苍
Publication Date
2007-03-14

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Abstract

The related false proof information embedding method for print-media certificate comprises: printing the false proof shading image in certificate content gap, and embedding the false proof information of screen code on the shading without changing shading pixel feature. The corresponding recognition method comprises: scanning the print media to recognize the false proof information, and comparing both the false proof information and certificate or copy together. This invention can also recognize the copy, needs low cost, and benefit to spread.
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Description

technical field

[0001] The invention belongs to the field of information processing, in particular to an anti-counterfeit processing method for printed medium certificates and copies thereof. Background technique

[0002] With the continuous development of innovative technologies of office automation equipment such as copiers, printers, and scanners, their printing or scanning resolutions are getting higher and higher. Using the above-mentioned equipment to print or copy printed media certificates, the effect can be fully achieved. In addition, the printed media certificate is scanned into the computer by the scanner to form a data image, and the image can be easily modified by using the image processing software in the computer to achieve the purpose of tampering.

[0003] Nowadays, not only the originals of various printed media certificates are used in the society, but in many cases, the copies of various printed media certificates are widely used. For example, relevant ...

Claims

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