Anti-counterfeiting method of print pictures based on CCD detection

A printed matter and image technology, which is applied in the field of anti-counterfeiting of printed matter images, can solve problems such as no detection, and achieve the effect of increasing the difficulty of copying and deciphering

Inactive Publication Date: 2013-12-04
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

On the whole, in the domestic and foreign halftone information embedding and extraction schemes, the information embedding and extraction of digital ima

Method used

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  • Anti-counterfeiting method of print pictures based on CCD detection
  • Anti-counterfeiting method of print pictures based on CCD detection
  • Anti-counterfeiting method of print pictures based on CCD detection

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Embodiment Construction

[0025] The present invention is a kind of anti-counterfeiting method of printed matter image based on CCD detection, and the specific implementation steps are as follows:

[0026] It is mainly divided into two parts: the establishment of anti-counterfeiting information database, the embedding of anti-counterfeiting information, and the extraction of anti-counterfeiting information.

[0027] 1. Establishment of anti-counterfeiting information database

[0028] For different users, companies, schools, establish an anti-counterfeiting information database suitable for the unit. The database table contains two fields, character information and binary code. Among them, the character information should include Arabic numerals, English letters, and Chinese character information that meet the needs of the unit; all character information corresponds to a corresponding unique 16-bit binary code.

[0029] For example: the database of a certain university includes the name of the school,...

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Abstract

The invention discloses an anti-counterfeiting method of print pictures based on CCD detection and belongs to the field of presswork forgery prevention. The method includes: establishing an anti-counterfeiting information database, embedding anti-counterfeiting information, and detecting the anti-counterfeiting information. Recording in the anti-counterfeiting information database can be established according the need of a unit. The anti-counterfeiting information is embedded by embedding mesh points different in area rate into a half-tone picture, and the mesh points different in area rate are used to express character information. A detection method of the anti-counterfeiting information includes: using CCD equipment to acquire a print picture with embedded anti-counterfeiting information and a print picture with no embedded anti-counterfeiting information, extracting the embedded anti-counterfeiting information by a feature extraction method, determining a printed matter is true if the data matching with that in the database, and determining the printed matter is counterfeited if the data matching with that in the database is not obtained. The method has the advantages that forgery prevention for printed matters such as package and certificates in practical production can be achieved and copying difficulty is increased greatly.

Description

technical field [0001] The invention relates to a method for anti-counterfeiting of printed images based on CCD (full name in English: Charge-coupled Device, full name in Chinese: charge-coupled device), which is used in the field of anti-counterfeiting in printing. Background technique [0002] Whether it is traditional printing or digital printing, in the field of printed matter circulation, people are faced with an important problem, the authenticity of printed matter. This problem is reflected in many aspects, such as: the authenticity of packaging printed matter, the authenticity of certificates, etc. . At present, counterfeit and counterfeit items are rampant, which seriously hinders the harmonious development of society, and consumers encounter difficulties in safeguarding their rights. Therefore, it is extremely important for major packaging and printing companies and certificate authentication companies to add anti-counterfeiting functions to printed materials, whi...

Claims

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Application Information

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IPC IPC(8): G06K17/00G06K19/06G06F21/10
Inventor 唐万有王振蓉赵小梅谢兵陈丽朱捷航张冬娟蒋瑞雪易端阳郝建强王慧芳吕晶付婷刘苏阳
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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