摘要
21世纪以来,计算机科学技术的发展,数字多媒体交流的完善,人们越来越重视信息安全,图像隐写技术作为一种保障信息交流安全的手段得到了快速的发展。本文提出一种利用模运算的周期性特点进行信息隐藏的彩色图像隐写算法。该算法引入一种新型隐写函数,计算出原始信息与秘密信息的差值,并结合隐写函数得到修改量进而实现信息隐藏,在保证安全性的前提下有较高的嵌入率。经过大量的实验证明,该算法具备良好的载密图像视觉质量及安全性,同时还具有更高更灵活的嵌入率,因此可代替大部分的彩色隐写算法。
Since the 21st century, with the development of computer science and the perfection of digital-multimedia conmmnication, people pay more attention to ilfformation security, image steganography technology is developed rapidly as a means to ensure information conmmnication security. This paper proposes a color image steganography algorithm that utilizes the periodic features of model operation for information eneryption. This algorithm introuduees a new steganography function and calculates the differences between the original image data and the secret data, and is combined with steganography function to get the amount of modification to achieve information hiding. This method realizes the information eneryption and ensures a high embedding rate on the premise of security. Sufficient experiments show this algorithm has good image visual quality and ilfformation security performanee, and a higher and more flexible embedding rate. Therefore, it can replace most color steganography algorithms.
作者
肖文国
葛华勇
彭阳洋
XIAO Wen-guo;GE Hua-yong;PENG Yang-yang(College of Information Science and Technology,Donghua University,Shanghai 201620,China;Digital Textile and Clothing Technology-Engineering Research Center,Ministry of Education,Donghua University,Shanghai 201620,China)
出处
《计算机与现代化》
2018年第10期48-52,78,共6页
Computer and Modernization
关键词
彩色图像
模运算
隐写算法
隐写函数
color image
modular arithmetic
steganography algorithm
steganography function
