空间域信息隐藏算法性能分析

Performance Analysis of Information-Hiding Algorithm in Spatial Domain

文中主要研究LSB、一阶Bezier曲线以及四叉树这3种典型的空间域信息隐藏算法,简要介绍了这3种算法的实现原理并给出了实验结果。通过对3种算法在信息隐藏比、信噪比和鲁棒性性能上的比较,指出空间域信息隐藏算法性能的改进方向是将秘密信息分散嵌入载体信息的适当位置,并动态改变每个位置嵌入信息量的大小,以便获得更好的视觉效果和更高的PSNR值。

Three typical spatial domain information - hiding algorithms based on LSB,simple Bezier - curve and Quadtree have been investigated respectively in this paper. The basic implementation principles and experimental results of these algorithms are also presented. By the comparison of the three performance parameters namely information- hiding ratio,PSNR （peak signal- to- noise ratio） and robusmess, conclude that the effort to make improvement is to embed the secret information into the carrier＇s disperse position, and be able to change the unit information embeded per position dynamically, then higher visual effect and PSNR value would be achieved.