基于角度结构特征的多载体信息隐藏算法  

Multi-carrier information hiding algorithm based on angular structure descriptor

作　　者：任帅[1] 苏东旭 Khurranm Shahzad 范傲雄 王萌 Ren Shuai;Su Dongxu;Khurranm Shahzad;Fan Aoxiong;Wang Meng(School of Information Engineering,Chang’an University,Xi’an 710064,China)

机构地区：[1]长安大学信息工程学院,西安710064

出　　处：《计算机应用研究》2021年第2期553-558,共6页Application Research of Computers

基　　金：国家自然科学基金资助项目(61702050);中央高校“双一流”引导专项(300104292405);2019年研究生教育教学改革建设专项基础建设项目(300103190640);大学生创新创业训练计划资助项目(201910710079,201810710052,201810710060,201810710215,201810710224)。

摘　　要：针对单载体信息隐藏算法的嵌入容量和安全性受载体数量限制无法进一步提升的问题,将载体预处理和秘密信息的嵌入结合于图像角度结构特征(angle structure descriptor,ASD),提出了一种基于角度结构特征的多载体信息隐藏算法。首先,提取图像的ASD特征向量对载体集进行分类,转换得到图像ASD方向场后对其编码;其次,根据载体分类数对秘密信息分段并进行置乱和优化;最后,基于ASD方向场的编码数据,在不同类多数量的载体上完成信息隐藏。在秘密信息提取时增加了对ASD特征向量提取时颜色量化差值的判断,进一步提升算法性能。实验分析表明,与基于单载体和图像分存的信息隐藏算法相比,算法的隐蔽性和鲁棒性都有明显提升,几乎可以完全抵抗基于统计特征的隐写分析,适用于对安全性要求高的大容量秘密信息隐蔽通信等应用。Aiming at the problem that the embedded capacity and security of the single-carrier information hiding algorithm can not be further improved because of the number of carriers,combining the carrier pre-processing and the embedding of secret information with the image angle structure feature,this paper proposed a multi-carrier information hiding algorithm based on the angle structure feature(ASD).Firstly,this paper used the angular structure features of the extracted image to classify the carrier set,and obtained the image angle structure feature direction field coding.Secondly,this paper segmented the secret information according to the carrier classification number and the preprocessing such as scrambling and optimization.Finally,based on the coded data of the ASD direction field,this paper performed information hiding on a plurality of types of carriers according to the information hiding rule.In particular,this paper designed the judgment selection option during secret information extraction to further improve the performance of the algorithm.The experimental analysis shows that the algorithm has good concealment,strong anti-analysis ability and robustness,and is suitable for applications such as large-capacity secret information covert communication with high security requirements.

关 键 词：多载体信息隐藏 秘密通信 角度结构特征 图像角度结构特征 HSV颜色量化 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]