A Method for Recognizing Hidden Text Graphics Using Moiré Phenomenon

A technology for hidden text and graphics, applied in the field of using moiré phenomenon to identify hidden text graphics, can solve problems such as being easy to be discovered by readers, failing to meet the original intention of the problem designer, affecting readers' thinking, etc., achieving convenient verification, increasing interactivity, The effect of increasing readability

Active Publication Date: 2018-11-02
杭州印校印务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of these methods can effectively hide the answer, and it is easy to be found by readers, thus affecting readers' thinking, and at the same time failing to achieve the original intention of the question designer

Method used

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  • A Method for Recognizing Hidden Text Graphics Using Moiré Phenomenon
  • A Method for Recognizing Hidden Text Graphics Using Moiré Phenomenon
  • A Method for Recognizing Hidden Text Graphics Using Moiré Phenomenon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Step 1. Screening line hiding of text information:

[0051] 1.1 According to the content of the answer to the puzzle "What the big man is looking for: the scroll with the fox's face printed on it in the corner." Design the font size of the text. The text should be flat in structure, horizontal and vertical, easy to hide and observe when screen printing, So boldface is appropriate, "What the big man is looking for:" is the title of the puzzle, and the font size should be four. "The scroll in the corner with the fox's face on it." For the content of the answer, the font size should be five. The two parts occupy one line each. Since the typesetting is on the left side of the book, the two parts are aligned to the left to facilitate the overlapping of identification cards.

[0052] 1.2 Select 45°screening for the text part, the number of screened lines is 200lpi, and the screen line is black, so that the thickness of the screen line is equal to the distance between adjacen...

Embodiment 2

[0078] Step 1. Screening line hiding of graphic information:

[0079] 1.1 Graphic design: Combined with the outline shape of the text, it transitions to a simple graphic. For example, the center of the school emblem of Hangzhou Dianzi University is composed of four letters C gradually changing, and the whole is like a letter "E", which symbolizes the English word "electronic". Initials. The four letters C are elegant and smooth, symbolizing Hangdian's goal of emancipating the mind and technological innovation. The graphic size is 20*20mm.

[0080] 1.2 Select 45°screening for the graphic part, the number of screened lines is 175lpi, and the screen line is black, so that the thickness of the screen line is equal to the distance between adjacent screen lines of about 0.0726mm, forming a striped hollow pattern.

[0081] 1.3 The background part adopts the same screening method as the graphic part in 1.2, and the screening method is staggered from the graphic part described in 1.2...

Embodiment 3

[0106] Step 1. Hide the screen lines of the graphics and text information:

[0107] 1.1 Graphic text design: Combined with the outline shape of the text, it transitions to a simple graphic. For example, the center of the school emblem of Hangzhou Dianzi University is composed of four letters C gradually changing, and the whole is like a letter "E", which symbolizes the English word "electronic". initials of . The four letters C are elegant and smooth, symbolizing Hangdian's goal of emancipating the mind and technological innovation. Text is designed around the graphic, the content is the name of the school in Chinese and English and the year of establishment of the school. The font size of the design text, the Chinese "Hangzhou Dianzi University" is the fifth handwriting, the English "HANGZHOU DIANZI UNIVERSITY" is the fifth Arial, and the number "1956" is the sixth Times New Roman. The overall size is 40*40mm.

[0108] 1.2 Select 45°screening for the graphic and text part,...

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Abstract

The invention discloses a method of identifying hidden characters and patterns by a moire phenomenon. In order to solve the improper design of the key to questions of existing textbooks and books and reduce interference on thinking to reading caused by the key, according to the method, characters and patterns and the background are screened by a same way and are distributed in a staggered manner, and the characters and patterns are hidden under high resolution screen line numbers; an identification card is manufactured by selecting proper material and printing mode, and the screening mode of the identification card is as same as that of the hidden region, so that the identification card and the hidden region are superposed to generate moire interference, and therefore, reverse interference is generated for the characters and patterns and the background, thereby increasing the difference of the two, and identifying information of the characters and patterns. The method is simple and understandable, convenient to set type and print and simple in verification operation, and the user can enjoy the pleasure of reading in a process of verifying the key.

Description

technical field [0001] The invention relates to a method for identifying hidden text graphics by using optical interference phenomenon, in particular to a method for identifying hidden text graphics by using moiré phenomenon. Background technique [0002] In book publications, especially books suitable for young children, it is often necessary to use interesting, inspiring, and educational questions to interact with readers, cultivate readers' ability to think and explore, and at the same time reap the joy of reading. However, some of the answers to these questions are printed directly after the questions, some are printed after the questions, and some are printed somewhere in the book. None of these methods can effectively hide the answer, and it is easy to be found by readers, thus affecting readers' thinking, and at the same time failing to achieve the original intention of the question designer. Contents of the invention [0003] The object of the present invention is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M1/06B41M1/30B41M3/00G02B27/00
CPCB41M1/06B41M1/30B41M3/005G02B27/00
Inventor 徐忠国胡更生陈梅
Owner 杭州印校印务有限公司
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