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
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[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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