一种新的基于量子小波变换的图像水印算法  

New Image Watermarking Algorithm Based on Quantum Wavelet Transform

作　　者：苏永红 夏婷 王绪梅 钱小红 SU Yonghong;XIA Ting;WANG Xumei;QIAN Xiaohong(Wuhan Huaxia Institute of Technology,Wuhan 430223,China)

机构地区：[1]武汉华夏理工学院,武汉430223

出　　处：《计算机科学》2023年第S01期808-815,共8页Computer Science

基　　金：湖北省教育厅科学技术计划指导性项目(B2017397)。

摘　　要：图像水印是一种将特定信息嵌入载体图像中的技术,用于版权保护。研究了一种新的基于量子小波变换的图像水印方案,包括置乱过程、嵌入过程和提取过程。其中采用改进的量子Arnold置乱方法对二值图像进行置乱,置乱后的水印图像应用于载体图像的最低有效分块量子位,对载体灰度图像采用量子Haar小波变换和量子最低有效位(LSB)分块技术,将置乱后的水印图像嵌入量子小波系数。首先从嵌入图像中提取置乱水印图像,然后利用改进的量子Arnold逆置乱方法进行逆置乱,获取原始水印图像。仿真技术验证了基于该量子图像水印方法水印的不可见性和高鲁棒性。通过峰值信噪比(PSNR)检验证明了该方案的不可见性。通过误码率(BER)检验和归一化相关系数(NC)检验了该方案的高鲁棒性。仿真结果表明,该水印方案不仅具有可接受的视觉质量,而且对不同类型的攻击具有良好的抵抗能力。Image watermarking is a technology that embeds specific information into the carrier image for the purpose of copyright protection.A new image watermarking scheme based on quantum wavelet transform is studied,including scrambling process,embedding process and extraction process.The improved quantum Arnold scrambling method is used to scramble the binary image.The scrambled watermark image is applied to the least effective block qubit of the carrier image.For the carrier gray image,the quantum Haar wavelet transform and quantum least significant bit(LSB)blocking technology are used to embed the scrambled watermark image into the quantum wavelet coefficient.In the extraction process,firstly,the scrambled watermark image is extracted from the embedded image,and then the improved quantum Arnold inverse scrambling method is used to obtain the original watermark image.Simulation technology verifies the invisibility and high robustness of the watermark based on the quantum image watermarking method.The invisibility of the scheme is proved by peak signal-to-noise ratio(PSNR)test.The high robustness of the scheme is tested by bit error rate(BER)test and normalized correlation coefficient(NC).Simulation results show that the watermarking scheme not only has acceptable visual quality,but also has good resistance to different types of attacks.

关 键 词：量子小波变换 图像水印 置乱 量子最低有效位分块 不可见性 鲁棒性 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]