一种基于三像素点分块的信息隐藏算法

Information hiding algorithm based on three-pixel block

提出了一种新的空域隐藏算法。该算法利用三像素值之间的大小关系来隐藏信息,将载体图像分成包含三像素的小块,修改第一、第三像素值来调整大小关系;另外对秘密图像进行了Arnold置乱预处理,利用混沌序列进行间隔隐藏。实验表明,该算法实现容易、隐藏量大、安全性和不可见性好,当嵌入率达到98.8%,峰值信噪比PSNR>38 dB。

This paper proposed a new hiding algorithm.It hid information by using the size relation of three pixel values.To hide information,divided the cover image into three-pixel blocks,changed the first and the third pixel value to modify the size relation.In addition,used Arnold transformation to scramble the secret image and used chaotic sequence to randomly embed information.The experimental results show that the algorithm realizes easily and has big hiding capacity,good security and invisibility.When the embe...