基于Hilbert的快速湿纸码自适应隐写算法  

Adaptive Steganography Algorithm of Rapid Wet Paper Code Based on Hilbert

作　　者：张广斌[1] 岳云天[1] 张传富[1] 

机构地区：[1]信息工程大学电子技术学院,郑州450004

出　　处：《计算机工程》2013年第7期161-164,共4页Computer Engineering

摘　　要：针对湿纸隐写计算复杂度较高的问题,提出一种快速嵌入算法。利用Hilbert曲线制定自适应规则,采用降低分组维数、比特控制的快速嵌入策略进行湿纸编码,得到修改矢量,按修改矢量改变图像数据实现信息隐藏。实验结果表明,对于每一个分组,该算法可提高约0.5%的解存在率,并以73%的概率降低修改矢量的汉明重量,与湿纸密写算法相比,嵌入速度、视觉隐蔽性都具有较大优势。According to the computational complexity of wet paper code, this paper presents a fast embedding strategy, on this basis, a fast adaptive image of the wet paper steganography scheme is given. Using the Hilbert curve to choose the feat pixel to carry information, the scheme uses the fast embedding strategy as the size of group reducer and bit-control to embedding secret in the map based on amend matrix. Experimental results indicate, for each packet, the existence rate of result is improved about 0.5%, also the probability of reducing Hamming weight of modified vector is 73%. Compared with Writing on Wet Paper（WWP）, this scheme improves the speed obviously and the quality ofstego image is better.

关 键 词：HILBERT曲线 自适应隐写 湿纸码 快速嵌入 复杂度 嵌入速度 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]