RNS在彩色图像水印中的应用  

Application of RNS in Color Image Watermarking

作　　者：陈丁睿 佟国香[1] CHEN Dingrui;TONG Guoxiang(University of Shanghai for Science and Technology,Shanghai 200093)

机构地区：[1]上海理工大学,上海200093

出　　处：《计算机与数字工程》2022年第2期414-418,共5页Computer & Digital Engineering

基　　金：国家重点研发计划项目“复杂产品全生命周期模型协同方法以及数据管理技术”(编号:2018YFB1700902)资助。

摘　　要：图像水印技术中,如何平衡鲁棒性和不可见性是技术的难点。余数系统(Residue Number System,RNS)基于中国剩余定理(Chinese Remainder System,CRT),多用于数字信号处理等领域。论文先利用Arnold置乱水印图像,再利用RNS的算法思想将水印图像分解为三通道,分别嵌入到载体图像的RGB分量的DCT变换域当中,考虑到人眼视觉系统和水印的抗鲁棒性,嵌入的位置选择DCT变换域的中频区域。实验结果显示,算法能够很好地在彩色图像中嵌入水印,并且能够抵抗图像处理常见的攻击,如剪切、噪声、滤波等,鲁棒性较强,不可见性良好。How to balance robustness and invisibility is the most difficult problem in image watermarking technology. Residue number system is mostly used in digital signal processing fields which is based on Chinese remainder system. In this paper,the watermarking image is changed with Arnold image-scrambling,and the watermarking image is decomposed into three channels and embedded into the DCT domain of the RGB component of the carrier image using RNS. Considering the robustness of human visual system and watermarking,the location of embedding is chosen in the intermediate frequency region of DCT transform domain. The experimental results show that the algorithm can embedding watermarking in color images well,and can resist common attacks of image processing,such as cutting,noise,filtering,etc. It has strong robustness and good invisibility.

关 键 词：图像水印 ARNOLD置乱 RNS CRT RGB图像 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]