摘要
为提高可逆信息隐藏嵌入容量,提出利用排序码分多址的方法嵌入秘密信息。对图像像素排序,每列进行升序排列,记录排序索引;使用码分多址复用的方法嵌入秘密信息,利用嵌入序列的正交性嵌入多层秘密信息;利用排序索引进行逆排序,得到嵌入后的图像。实验分析结果表明,嵌入容量比未排序时提高了2至8倍,消除了图像纹理复杂度对嵌入容量的影响。
Aiming at enhancing the embedded capacity of reversible data hiding,a scheme was proposed by adopting sorted code division multiple access(S-CDMA).The image was arranged in ascending order by column and the sorting index was recorded.Data embedding was based on CDMA.The orthogonal sequences guaranteed the multi-level embedding.The image was arranged by sorting index.Experimental results show that the embedded capacity is increased 2 to 8 times over unsorted.And the impact of image texture complexity on embedding capacity is eliminated.
作者
王建平
张敏情
李天雪
马双棚
WANG Jian-ping;ZHANG Min-qing;LI Tian-xue;MA Shuang-peng(Key Laboratory of Network and Information Security under Chinese People Armed Police Force,Department of Electronic Technology,Engineering University of PAP,Xi’an 710086,China)
出处
《计算机工程与设计》
北大核心
2018年第9期2730-2735,共6页
Computer Engineering and Design
基金
国家自然科学基金项目(61379152
61403417)
关键词
信息安全
排序
码分多址
可逆信息隐藏
图像处理
information security
sorting
code division multiple access
reversible data hiding
image processing