基于视觉特性的JPEG图像自适应隐写算法  

Image adaptive steganography algorithm based on visual features of jpeg

作　　者：唐坤[1,2] 葛华勇[1,2] 房树娟[1,2] 

机构地区：[1]东华大学信息科学与技术学院,上海201620 [2]数字化纺织服装技术教育部工程研究中心,上海201620

出　　处：《微型机与应用》2015年第8期39-40,43,共3页Microcomputer & Its Applications

摘　　要：提出一种基于视觉特性的图像隐写算法。该算法利用亮度和纹理阈值等人类视觉系统特性,并结合图像各个局部分块的亮度与纹理特征,将图像划分为强嵌入区、次嵌入区、弱嵌入区,计算各个局部分块亮度和纹理,分别嵌入不同比特数的秘密信息。实验结果表明,该算法能够增加图像秘密信息的嵌入容量,提高抗检测性能,以及保持较高的峰值信噪比。This paper proposes an image steganographic algorithm based on visual features. The algorithm uses the features of human visual system such as brightness and texture threshold. Combined with the brightness and texture characteristics of each local block of tbe image, the algorithm divides the image into strong embedding area, secondary embedding area, and weak embedding area, calculates brightness and texture of each local partition, and embeds different bits of the confidential information. Experimental results show that the proposed algorithm can increase the embedding capacity of secret information of image, improve the detection performance, and maintain high peak signal to noise ratio.

关 键 词：自适应隐写 JPEG图像 人类视觉特性 峰值信噪比 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]