B样条驱动纹理生成的构造式信息隐藏  

Constructive information hiding with texture generation driven by B-spline

作　　者：郦姝伊 韩彦芳[1] 乐燕芬[1] 姚恒[1] 秦川[1] Li Shuyi;Han Yanfang;Le Yanfen;Yao Heng;Qin Chuan(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《中国图象图形学报》2024年第4期989-1002,共14页Journal of Image and Graphics

基　　金：国家自然科学基金项目(62172280,U20B2051);上海市自然科学基金项目(21ZR1444600)。

摘　　要：目的传统构造式图像信息隐藏算法通常直接将图像空域特征与秘密信息关联,对算法的安全性造成威胁。因此,本文将曲线绘制函数与信息隐藏相结合,提出一种以B样条控制点为特征,在图像空域间接隐藏信息的算法。方法算法主要分为信息隐藏及信息提取两阶段。在信息隐藏阶段,发送方首先通过选取初始控制点、仿射变换及B样条曲线绘制生成多条参考曲线,然后利用曲线控制点的位置隐藏信息,最后为图像填充颜色,即完成含密纹理图像的构造。在信息提取阶段,提取方根据纹理曲线和图像颜色获得含密曲线及参考曲线,经对照计算即可提取出秘密信息。结果本算法具有较高的隐藏容量、鲁棒性和安全性。实验结果表明,由本文算法生成的800×800像素图像,其最高隐藏容量可达2870 bits,分别是另两种典型构造式信息隐藏算法的6.7和3.4倍,且在质量因子为10的JPEG(joint photographic experts group)压缩攻击下的提取误码率可低至0,优于鲁棒较强的选择式信息隐藏算法LDA-DCT(robust coverless image steganography based on DCT and LDA topic classification)以及与之类似的构造式信息隐藏算法。同时,抗隐写分析检测实验表明,在隐藏容量小于250 bits时检测误差趋近于0.5。结论本文以B样条曲线控制点为特征,在纹理图像的绘制过程中隐藏信息,有效提高了传统构造式图像信息隐藏算法的安全性、隐藏容量和鲁棒性。Objective Information hiding techniques,including watermarking and steganography,have currently become effective and important applications for secret communication.For a country or an organization,information hiding technol-ogy can be used to realize the communication of confidential information through watermarking technology to protect the copyright of software or digital publications.Information hiding technologies always realize information hiding by modifying the transmission carrier.However,with the continuous development of steganalysis technology,information hiding algo-rithms suffer from the risk of easy detection.Therefore,some scholars have introduced coverless information hiding algo-rithms.Coverless information hiding does not mean secret communication without transmission media and does not modify the transmission media,realizingsecret information transmission by transmitting the original media without modification.The coverless information hiding algorithm can be divided into selective and constructed information hiding.Selective information hiding encodes or extracts features from the images in the image library and chooses the images corresponding to the secret information.By contrast,constructive information hiding is a technology that uses secret information as the driver to generate secret communications media to realize information hiding.However,traditional constructive information hiding algorithms generally use visual signals such as pixels or patterns to hide the secret information directly in the image,resulting in a strong correlation between the image content and the secret information,which is easily identified by analyzing and detecting the image.Considering the widespread use of B-spline curves in computer graphics,this paper proposes a constructive information hiding algorithm based on B-spline to generate texture images.The position of the control points is modified in accordance with the secret information.Therefore,the secret information is indirectly hidden in the image specia

关 键 词：构造式信息隐藏 B样条 纹理图像 隐藏容量 安全性 鲁棒性 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]