摘要
本文基于三维离散余弦变换(3D-DCT)技术和扩频通信技术提出三维体数据鲁棒水印嵌入算法.算法将原始的二值图像水印利用扩频通信技术生成可以直接嵌入的体水印信息;分别对体水印信息和原始的体数据进行分块离散余弦变换,在变换域内实现水印嵌入.该算法嵌入的水印信息具有不可见性,能够抵抗剪切、加噪、滤波、旋转等常见攻击.仿真实验验证了算法的有效性.
This paper proposes a robust watermarking algorithm for volume data based on three-dimension discrete cosine trans- form （3D-DCT） and spread-spectnun communication technique. Original binary image watermark is mapped to volume watermark, which can be directly embedded to the host,with spread-spectnun communication technique.The block 3D-DCT is applied to the volume watermark and the original volume data, respectively, to implement watermark embedding. The embedded watermark is invisible and withstands the common attacks such as cropping,adding noise,filtering and rotation. The validity of proposed algorithm has been confirmed with experiments.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2005年第12期2174-2177,共4页
Acta Electronica Sinica
