基于量子漫步和像素分块算法的量子彩色图像水印方案  

Quantum Color Image Watermarking Scheme Based on Quantum Walk and Pixel Blocking Algorithm

作　　者：王骞卉 李祯祯 李子臣 

机构地区：[1]北京印刷学院信息工程学院,北京

出　　处：《计算机科学与应用》2024年第5期194-205,共12页Computer Science and Application

摘　　要：本文基于离散量子漫步算法和像素分块算法,提出了一种既安全又有效的量子彩色图像水印方案。离散量子漫步,作为随机行走的量子版本,可以被视作量子态与位置概率分布间的一种非线性映射关系。其独特的数学性质,也作为混沌行为的印记,使得它成为CNOT门控制位的理想选择。在水印嵌入过程中,采取了像素分块策略,通过精心比较各像素块内像素的嵌入能力,从而优化了嵌入水印后的图像视觉质量。该方案不仅增强了水印方案的安全性,同时也保证了图像的观感不受影响。Based on the discrete quantum walk algorithm and pixel blocking algorithm, this paper proposes a safe and effective quantum color image watermarking scheme. Discrete quantum walk, as the quantum version of random walk, can be regarded as a nonlinear mapping relationship between quantum states and position probability distributions. Its unique mathematical properties, also serving as an imprint of chaotic behavior, make it an ideal choice for the control bit of the CNOT gate. In the watermark embedding process, a pixel blocking strategy is adopted, carefully comparing the embedding capabilities of pixels within each pixel block, thereby optimizing the visual quality of the image after embedding the watermark. This scheme not only enhances the security of the watermarking scheme but also ensures that the image perception is not affected.

关 键 词：量子图像处理 量子水印 量子漫步 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]