一种基于时域混合的DWT-SVD盲数字水印算法  

DWT-SVD blind digital watermarking algorithm based on the mix of time-domain

作　　者：张凤娟[1] 李琦[1] 高军萍[1] 秦丽伟[1] 

机构地区：[1]河北工业大学信息工程学院,天津300401

出　　处：《电子设计工程》2015年第9期104-108,共5页Electronic Design Engineering

基　　金：河北省自然科学基金(F2012202116)

摘　　要：提出了一种基于时域混合的盲数字水印新算法。该算法一改传统水印的嵌入过程,首先对载体图像进行分块,利用最佳信号与载体图像进行时域混合以改变图像信息的分布,之后通过离散小波变换结合奇异值分解完成水印嵌入,再进行时域混合恢复得到嵌入水印的图像。进行各种攻击测试,并与传统DWT-SVD数字水印算法进行比较。实验结果表明,时域混合算法具有很好的隐蔽性和鲁棒性。A new blind digital watermarking algorithm based on the mix of time-domain is proposed. This algorithm changes the traditional watermark embedding process. Firstly, the host image is separated into different blocks, and the perfect signals are used to finish the mix of time-domain on the host image, which changes the distribution of image information. Then, the embedding process is completed on frequency-domain, which is discrete wavelet transform with singular value decomposition, and restore the mix of time-domain to get the image with watermark. Attack tests and comparison with traditional DWT-SVD image watermarking algorithm are carried out. The results show that the image watermarking algorithm based on the mix of time-domain has good imperceptibility and robustness.

关 键 词：数字水印 时域混合 最佳信号 小波变换 奇异值分解 

分 类 号：TN911.73[电子电信—通信与信息系统]