一种新的二值图像特大容量信息隐藏算法
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摘要
为了提高二值图像的信息隐藏容量和保持载密图像良好的视觉效果,避免图像因分块后出现"黑白孤岛点"现象,提出一种基于分块和混沌序列的二值图像信息隐藏算法。首先,应用Logistic混沌序列将图像调制,使其像素位置和像素值随机分布,信息0、1像素随机分布后可使得2×2分块图像的像素全为0或1的概率最小。其次,将信息图像和二值图像以2×2分块,把非全0或非全1的信息块直接嵌入到二值图像的可嵌随机块中;而将全0或全1信息块的其一像素值修改为二值图像可嵌随机块对应像素的像素值后再进行嵌入。实验结果表明,该算法的图像像素改变量少且隐藏容量大,信息嵌入容量为可嵌入块的100%,提取的信息误码率低,载密图像失真小、安全性高。
In order to improve the information hiding capacity of binary image,maintain a good visual effect of encryption image and avoid the phenomenon of " black and white island",we present a binary image information hiding algorithm based on blocking and chaotic sequences.It first uses the Logistic chaotic sequence to modulate the image so that its pixel position and pixel values are randomly distributed.The probability that the pixels of the 2×2 blocking image are all zero or all one is minimized when the information pixels are randomly distributed.And then the information image and the binary image are divided into 2×2 blocks,the non-all-zero or non-all-one information blocks are directly embedded in the embeddable random blocks of the binary image. Those all zero or all one blocks need to modify one of the pixel values to the corresponding pixel of the binary image and then embedded. The experiment shows that the algorithm can significantly improve the hiding information capacity when changing fewer pixels value of the image,and its information embedding capacity is 100% of the embedded block.It also can achieve small image distortion with lowbit error rate and better security.
In order to improve the information hiding capacity of binary image,maintain a good visual effect of encryption image and avoid the phenomenon of " black and white island",we present a binary image information hiding algorithm based on blocking and chaotic sequences.It first uses the Logistic chaotic sequence to modulate the image so that its pixel position and pixel values are randomly distributed.The probability that the pixels of the 2×2 blocking image are all zero or all one is minimized when the information pixels are randomly distributed.And then the information image and the binary image are divided into 2×2 blocks,the non-all-zero or non-all-one information blocks are directly embedded in the embeddable random blocks of the binary image. Those all zero or all one blocks need to modify one of the pixel values to the corresponding pixel of the binary image and then embedded. The experiment shows that the algorithm can significantly improve the hiding information capacity when changing fewer pixels value of the image,and its information embedding capacity is 100% of the embedded block.It also can achieve small image distortion with lowbit error rate and better security.
引文
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[14]TSENG Y C,CHEN Yuyuan,PAN H K.A secure data hiding scheme for tw o binary images[J].IEEE Transactions on Communications,2002,50(8):1227-1231.
[15]马秀莹,林家骏.信息隐藏性能评价方法[J].中国图象图形学报,2011,16(2):209-214.
[2]方奋奇,边学军.一种基于二值图像的信息隐藏技术[J].软件,2012,33(1):27-28.
[3]廖琪男.嵌入率可调和低修改率的二值图像密写算法[J].小型微型计算机系统,2012,33(11):2522-2525.
[4]YANG H J,KOT A C.Pattern-based data hiding for binary image authentication by connectivity-preserving[J].IEEE Transactions on M ultimedia,2007,9(3):475-486.
[5]乔中良.图像加密域可分离可逆信息隐藏算法的系统设计与实现[J].计算机应用,2015,35(S1):57-59.
[6]WU Min,LIU Bede.Data hiding in binary image for authentication and annotation[J].IEEE Transactions on M ultimedia,2004,6(4):528-538.
[7]JUNG K H,YOO K Y.Data hiding method with quality control for binary images[J].Journal of Softw are Engineering and Applications,2009,2(1):20-24.
[8]王国才,王芳,柯福送,等.作用于块奇偶性的二值图像数据隐藏算法研究[J].小型微型计算机系统,2013,34(6):1424-1427.
[9]刘九芬,付磊,张卫明,等.基于二值图像的信息隐藏算法[J].计算机工程,2011,37(18):121-123.
[10]刘春庆,戴跃伟,王执铨.一种新的二值图像信息隐藏方法[J].东南大学学报:自然科学版,2003,33:98-101.
[11]谢建全,阳春华,谢勍,等.一种大容量的二值图像信息隐藏算法[J].小型微型计算机系统,2008,29(10):1874-1877.
[12]郭萌,张鸿宾,魏磊.二值图像中的数据隐藏算法[J].电子学报,2009,37(11):2409-2415.
[13]曹玉琳,尹显东.基于二值图像的数据隐藏方法[J].信息与电子工程,2007,5(1):70-74.
[14]TSENG Y C,CHEN Yuyuan,PAN H K.A secure data hiding scheme for tw o binary images[J].IEEE Transactions on Communications,2002,50(8):1227-1231.
[15]马秀莹,林家骏.信息隐藏性能评价方法[J].中国图象图形学报,2011,16(2):209-214.