摘要
本文以数字水印为研究对象,结合Zernike矩在图像抗旋转变化规律与特性,分析Zernike矩特性参数对获取旋转图像角度的影响,运用DCT变换实现了数字水印嵌入和提取算法,在旋转攻击后水印保持较高的相似度,验证了Zernike矩对抗旋转变化具有较好的鲁棒性。
In this paper,the digital watermark is taken as the research object,combining the rule and characteristics of Zernike moment in image anti-rotation changes,analyzing the influence of characteristic parameters of Zernike momenton obtaining the angle of rotation image,using DCT transform to realize the algorithm for embedding and extracting digital watermark,maintaining a high degree of simi⁃larity after rotation attacks,proving that Zernike moment has good robustness against rotation changes.
作者
王湘慧
WANG Xiang-hui(Changsha Vocational&Technical College,Changsha 410006,China)
出处
《电脑知识与技术》
2020年第3期223-226,共4页
Computer Knowledge and Technology
基金
湖南省教育厅一般课题(课题编号：14C0135)
