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Method for embedding information on upper printed medium

A technology of printing media and input terminal, applied in the field of information processing, can solve the problems of large amount of embedded information, illegal duplication of printed documents, small destructive quality of identification accuracy information, etc., and achieve the effect of large amount of embedded information

Active Publication Date: 2008-01-02
顾泽苍
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Problems solved by technology

[0007] The object of the present invention is to propose a method for embedding information on the mixed image form and mixed pixel form on the printing medium, which has the advantages of large amount of embedded information, high recognition accuracy and little damage to the original information quality. Features, and the use of printing media information processing equipment can effectively solve the problems of illegal copying, forgery, tampering, etc. of printed documents

Method used

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  • Method for embedding information on upper printed medium
  • Method for embedding information on upper printed medium
  • Method for embedding information on upper printed medium

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Embodiment Construction

[0059] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, but the embodiments described in the present invention are illustrative rather than restrictive.

[0060] Examples of AM screen dots, FM FM screen dots, error diffusion screen dots, and 10,000-line screen dots are given in Figure 1. Figure 1(a) is a legend of AM screen dots, Figure 1(b) is a legend of FM screen dots, Figure 1(c) is a legend of error diffusion screen dots, and Figure 1(d) is a million line screen An example of screen dots. Among them, 101 is a dot, that is, the smallest unit of printing, and 102 is a dot printed with ink. The so-called pixel is the smallest unit that constitutes an image, the so-called dot is the smallest unit of the screen corresponding to the pixel that constitutes the smallest unit of the image, and the dot is composed of dots. The AM type screen shown in Figure 1(a) is based on the size of the dots and the...

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Abstract

The invention belongs to a method of burying information in printed medium in fields of information process: multiple-image form including character, image, and graph, multiple-pixel form including mesh-type, myriad line-type, error pervasion-type and at least one types of mixed black and white or colorful image with multiple gray scale values are buried, it also includes information burying of mixed image in additional mode and said any image mode. The method possesses characters that quantity of information is big, precision of identification is high and breakage of original image is little, and net screen coding embedding and net screen coding identifier are added into printed medium information processor, it possesses function that information floating word, secret file can be prevented to be copied, information chasing, certificate can be prevented to be sophisticated and file secret-writing and secret-sending, it provides technique auspice for file copying illegally, forgery, tampering induced by popularization of equipment.

Description

technical field [0001] The invention belongs to the field of information processing, in particular to a method for embedding computer information on a printing medium. Background technique [0002] In recent years, with the widespread use of printing media information processing equipment (such as printers, copiers, and all-in-one machines), the corresponding technologies for printing images on printing media or embedding computer information in the background of images using the above-mentioned equipment have been obtained. With the rapid development, people can realize the function of data storage on print media through this information embedding technology, and it is widely used in the fields of anti-counterfeiting and anti-tampering of print media files. The existing information embedding methods mainly include: [0003] 1. Arrange the information to be embedded into a series of small arrays to form a digital watermark image, and directly superimpose the digital waterma...

Claims

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Application Information

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IPC IPC(8): G06F3/12G06T1/00
Inventor 顾泽苍
Owner 顾泽苍
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