A Matrix Rotation Screening Method for Image and Text Information Hiding and Anti-counterfeiting

Abstract

The invention discloses a matrix rotation screening method for hiding and anti-counterfeiting of graphic and text information, specifically: step 1, designing an aggregation state screening threshold matrix; step 2, establishing a matrix rotation screening algorithm; step 3, generating halftones Image; step 4, embedding the image and text information to be hidden; step 5, making a display tool; step 6, checking the hidden image and text information. The present invention is a matrix rotation screening method for image and text information hiding and anti-counterfeiting, which uses multiple threshold matrix rotation and screening to generate connecting network points with special shapes, which is applied to image and text information hiding and anti-counterfeiting technology, and solves the problems in the existing methods. The breakpoint problem that occurs when traditional dot matrix dots are hidden optimizes the hiding effect of graphic information, and the introduction of special shape dots also increases the difficulty of counterfeiting.

Description

technical field [0001] The invention belongs to the technical field of printing halftone screen screening, and relates to a matrix rotation screen screening method, in particular to a matrix rotation screen screening method for graphic information hiding and anti-counterfeiting. Background technique [0002] With the rapid development of printing technology, counterfeiting and chaotic phenomena have emerged, and anti-counterfeiting printing technology has become an indispensable technical means in the printing industry. The anti-counterfeiting method based on halftone screening technology to hide graphic and text information is simple and easy, does not change the traditional printing production equipment and process, and does not increase production costs. It is an anti-counterfeiting method that has developed rapidly in recent years. The hiding of the image is achieved by offsetting the dot position, and the hidden information can be revealed after adding the corresponding...

AI Technical Summary

Problems solved by technology

At present, in this method, because the dots of the traditional shape are evenly distributed dot matrix information, breakpoints will appear after the position of the dots is shifted, and white or black lines that can be perceived by the human eye will be formed macroscopically, which will affect the printing quality and graphics. The effect of hiding information, at the same time, the types of dots in traditional shapes are limited, counterfeiters are easy to imitate, and the anti-counterfeiting coefficient is not high

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