一种用于图文信息隐藏防伪的矩阵轮换加网方法

Matrix circulant screening method used for graphic-text information hiding and anti-counterfeiting

Abstract

本发明公开了一种用于图文信息隐藏防伪的矩阵轮换加网方法,具体为:步骤1,设计聚集态加网阈值矩阵;步骤2,建立矩阵轮换加网算法;步骤3,生成半色调图像;步骤4,嵌入待隐藏图文信息;步骤5,制作显隐工具;步骤6,检验隐藏图文信息。本发明一种用于图文信息隐藏防伪的矩阵轮换加网方法,利用多个阈值矩阵轮换加网生成具有特殊形状的连结网点,应用于图文信息隐藏防伪技术中,解决了现有方法中传统点阵网点隐藏时出现的断点问题,优化了图文信息的隐藏效果,特殊形状网点的引入也提高了造假的难度系数。
The invention discloses a matrix circulant screening method used for graphic-text information hiding and anti-counterfeiting. The matrix circulant screening method comprises the following specific steps: step 1, designing an aggregation-state screening threshold value matrix; step 2, establishing a matrix circulant screening algorithm; step 3, generating a half-tone image; step 4, embedding to-be-hidden graphic-text information; step 5, manufacturing an explicit-implicit tool; and step 6, inspecting hidden graphic-text information. According to the matrix circulant screening method used for graphic-text information hiding and anti-counterfeiting disclosed by the invention, a connecting screen dot with a special shape is generated by utilizing circulant screening of a plurality of threshold matrixes for being applied to a graphic-text information hiding and anti-counterfeiting technology, so that a breakpoint problem which appears during conventional dot matrix screen dot hiding in a current method is solved, hiding effect of the graphic-text information is optimized, and a counterfeiting difficulty coefficient is also increased by introducing the screen dot with the special shape.

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Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    CN-102616043-AAugust 01, 2012天津市华明印刷有限公司, 天津科技大学一种隐藏信息光栅解锁防伪的方法及系统
    CN-103839260-AJune 04, 2014陕西科技大学Method for matching simulation grating based on hidden image lattice point area ratio
    CN-104268821-AJanuary 07, 2015西安西正印制有限公司一种基于组合加网技术的图文信息隐藏方法
    US-2014002864-A1January 02, 2014Peking University Founder Group Co., Ltd., Peking University Founder R & D Center, Beijing Founder Electronics Co., Ltd, Peking UniversityAmplification Modulation Screening Method And Apparatus

NO-Patent Citations (1)

    Title
    徐锦林等: "调幅加网阈值矩阵设计方法与加网原理", 《中国印刷与包装研究》

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