基于小波变换自适应数字图像水印算法

Study of Adaptive Digital Watermarking Algorithm Based on Wavelet Transformation

阐述了图像数字水印和小波变换的基本原理,通过对小波基、分解级数、小波系数选择及人类视觉掩蔽特性等的分析,提出了一种基于小波变换自适应图像数字水印算法.通过剪切、加噪、滤波、锐化、模糊等几种常用攻击技术对算法进行了测试,实验结果表明该算法具有较强的鲁棒性.

The basic principles of image digital watermarking was analyzed, and an adaptive image watermarking algorithm based on wavelet transform, was proposed through the analysis of wavelet basis function, decomposition series, coefficient selection and human visual masking. This algorithm was tested in several commonly used means such as shearing, noise adding, filtering, sharpening, fuzzy, etc. The experimental results show that the algorithm has strong robustness.