基于矩阵编码和两类峰值位图的可逆信息隐藏  

A Reversible Data Hiding Method Based on Matrix Encoding and Two Types of Peak Bitmaps

作　　者：夏婷婷 XIA Tingting(School of Mathematics and Computer, Wuyi University, Wuyishan, Fujian 354300, China)

机构地区：[1]武夷学院数学与计算机学院,福建武夷山354300

出　　处：《闽江学院学报》2021年第2期38-44,共7页Journal of Minjiang University

基　　金：福建省中青年教师教育科研项目(JAT200671)。

摘　　要：将一张原始灰度图像通过AMBTC压缩技术获得压缩图像块,然后统计不同位图出现的频率,其中频率出现最高和第二高的两类位图称作为峰值位图。秘密信息采用两种方式进行嵌入。第一类,将秘密信息通过矩阵编码方式,嵌入到两类峰值块中。第二类,将秘密信息嵌入高、低量化值相等的位图中,利用密码信息直接替换原位图中比特的方式。为了达到图像信息可逆的目的,方案提出对两类峰值位图进行标记,标记信息记录在高量化值的最低有效位LSB中。最后,与一类峰值位图进行秘密信息策略比,该方法具有信息隐藏量大,图像品质良好的特点。The original grayscale image was compressed by AMBTC compression technology,and then the frequencies of different bitmaps were counted.The two types of bitmaps with the highest frequency and the second highest frequency were called peak bitmaps.Secret information is embedded in two ways.First,the secret information is embedded into two types of peak bitmaps through matrix encoding.Second,the secret information is embedded in the bitmap with the same high and low quantization values,and the secret information is used to directly replace the bits in the bitmap.In order to realize the reversibility of image information,two kinds of peak bitmaps are labeled,and the labeled information is recorded in the lowest significant bit LSB with high quantization value.Finally,compared with a class of peak bitmaps,our method has the characteristics of large information hiding capacity and good image quality.

关 键 词：可逆信息隐藏 AMBTC 两类峰值位图 矩阵编码 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]