高容量加密域图像可逆信息隐藏  

Encryption Image Reversible Information Hiding Using Integer Transform

作　　者：王杭兴 WANG Hang-Xing(College of Information Science ＆ Engineering, Huaqiao University, Xiamen 361021, China)

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《科技视界》2018年第8期53-54,共2页Science & Technology Vision

基　　金：华侨大学研究生科研创新能力培育计划资助项目

摘　　要：为了在加密图像实现高容量可逆隐秘传输,本文提出了一种基于整数变换的加密图像可逆信息隐藏改进方法。图像拥有者利用定位图对像素组任意像素进行整数变换,变换后的像素组像素受该整数变换性质的影响,使符合条件的像素组任意像素LSB被修改后,依然能恢复回原来的像素。因此,图像拥有者加密前对特定的图像块进行整数变换,根据定位图进行图像块排列,以便秘密信息以LSB替换的方式嵌入到特定的图像块中,拥有解密密钥就可以获得原始图像信息,拥有嵌入密钥就可以在密文图像中嵌入信息或者提取秘密信息,拥有解密密匙、嵌入密匙既可以提取秘密信息和恢复原始图像。仿真实验表明该方法具有较高的嵌入容量和较低的失真。In order to achieve high-capacity reversible secret transmission in encrypted images, an improved method of reversible information hiding is proposed in this paper. The image owner uses integer transformation on any pixel of the pixel group according to positioning map. The pixel of the transformed pixel group is affected by the integer transform property, so that any pixel of the eligible pixel group LSB is modified and still restored to the original pixel.Therefore, the image owner uses integer transformation on a specific image block before encryption, and arranges the image blocks according to the positioning map, so that the secret information is embedded into a specific image block in an LSB replacement manner. the original image information can be obtained with the decryption key, Someone can embed the information in the ciphertext image or extract the secret information With the embedded key, Someone can both extract the secret information and restore the original image with the decryption key and embedded key. Simulation results show that this method achieve a higher embedding capacity and lower distortion.

关 键 词：可逆信息隐藏 整数变换 加密 嵌入容量 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]