摘要
通过对批量隐写的定性分析,提出了增大批量隐写容量的方法。对大容量图像的位平面进行等分分块,采用矩阵编码技术,证明了至多修改像素的1 LSB位能够嵌入2 bit隐秘信息的结论,提升了批量隐写容量,并给出了安全性分析。最后结合隐秘信息的嵌入和提取算法,以航拍图为隐写载体进行实验,验证了算法的有效性。
According to the definition of batch steganography and the properties of security,this paper presented a method to increase capacity for batch steganography.By dividing up bit-plane of large images and matrix coding,it proved that,a given image block could embed 2 bit by changing at most 1 bit in pixel,and enlarging embedding capacity.Besides analyed security of algorithm and gave embedding and extracting algorithm.The result of experiments shows that the new method of batch steganography for capacity increasing is reasonable.
出处
《计算机应用研究》
CSCD
北大核心
2011年第9期3492-3494,3498,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(60773004)
山西省科技攻关项目(20090322004)
关键词
信息隐藏
批量隐写
隐写容量
安全性
位平面
information hiding
batch steganography
steganographic capacity
security
bit-plane
