基于点阵式字符编码与实体颜色的工程图密写技术研究  

Research on steganography based on dot-matrix character code and entity color for engineering graphics

作　　者：杨玉军[1] 杨夷梅[1] 尹湘锋[2] 

机构地区：[1]怀化学院计算机科学与技术系,湖南怀化418008 [2]湖南科技大学数学学院,湖南湘潭411201

出　　处：《图学学报》2012年第4期156-162,共7页Journal of Graphics

基　　金：怀化学院科研资助项目(HHUY2011-17);怀化学院教改资助项目(201125);怀化学院重点学科建设资助项目

摘　　要：针对数字工程图的版权保护问题和现有密写技术鲁棒性和实用性不强的特点,提出了一种基于点阵式字符编码与实体颜色的工程图密写技术算法。该算法先对要隐藏的信息进行点阵式编码处理,使字符具有图像的特性,然后根据Logistic混沌系统对该点阵式编码信息进行二值化处理加密,结合HVS将加密后信息和加密信息的校验码嵌入到工程图的实体颜色中,从而实现信息的隐藏和自校验。实验结果显示该算法对平移、旋转和编辑等攻击具有较好的鲁棒性和较高的嵌入量,较好地解决了数字工程图的版权保护问题。Aiming at the problem of copyright protection for digital engineering drawing and the deficiency of robustness and practicability of the steganography for digital engineering drawing,an algorithm of steganography based on dot-matrix character code and entity color for engineering graphics is proposed.In the algorithm of steganography,the hidden message is firstly coded by dot-matrix,and the character of the message has the image characteristic property.Then the coded information is encrypted by a two-value chaotic sequence generated by Logistic map system.To realize the information hiding and self-checking,the encrypted information and its checksum are embedded into the entity color of engineering drawing combining with the HVS.The experiment results show that the algorithm has a higher embedded capacity and a better robustness for some attacking of moving,rotation and edit.And the problem of copyright protection for digital engineering drawing is solved in a good way using the algorithm.

关 键 词：计算机应用 密写技术 实体颜色 字符点阵式编码 工程图 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]