摘要
将载体图像按照不同的扫描方式转换为不同的一维序列,通过计算一维序列前后两个元素的差值,再统计出该差值序列中频率出现最多的两个值,计算不同扫描方式中这两个值出现的总次数。选择总次数最大的扫描方式生成的一维序列中进行信息隐藏,在频率最大的两个数据中隐藏信息。实验结果表明,该算法隐藏容量大,载体图像的峰值信噪比高。
A high-capacity reversible data hiding algorithm based on neighboring pixels is proposed in this paper. Cover image is first converted into one dimensional (1D) sequence by different scan patterns. The difference values between each two neighbor elements in the 1D sequence are calculated and the two difference values with biggest frequencies are distinguished. For each scan pattern, the occurrence number of the two difference values is achieved. The scan pattern with the biggest occurrence number is used for data hiding, where the two difference values with biggest frequencies are exploited to embed secret messages. Experimental results show that the proposed algorithm has large embedding capacity and high PSNR value.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2012年第4期491-495,共5页
Journal of University of Electronic Science and Technology of China
基金
国家自然基金(60963008)
广西自然科学基金(2011GXNSFD018026
0832104
2012GXNSFBA053166)
广西科学研究与技术开发计划项目(10123005–8)
重庆市教委研究项目(KJ121310)
广西教育厅项目(200911MS55)
广西研究生教育创新计划项目(2010106020812M62)
关键词
差值
大容量
相邻
峰值信噪比
可逆
difference-value
high-capacity
neighboring pixels
peak signal to noise ratio
reversible