摘要
在混沌置乱变换及抖动量化原理基础上,提出了一种基于NSCT的盲水印算法.首先将图像进行NSCT变换及分块SVD分解,再对原始水印信息进行混沌置乱变换以消除线性相关性,最后,利用抖动量化原理对分块SVD分解产生的各块奇异值进行修改实现水印嵌入.实验表明,该算法透明性好,拥有较强的鲁棒性,且在水印提取时实现了盲提取,是一种盲水印算法.
The paper proposes a blind watermarking algorithm based on NSCT and dither quantization. First, it transforms the image with NSCT and decomposes it with SVD block. Then, it sets the original watermark information chaos chaotically in order to eliminate the linear correlation. Subsequently, it alters every SVD block＇ s singular value based on the dither quantization to embed the watermark. The results show that this blind watermarking algorithm has a good imperceptibility and strong robustness, and can well achieve a blind watermark extraction.
出处
《云南民族大学学报（自然科学版）》
CAS
2013年第3期222-225,共4页
Journal of Yunnan Minzu University:Natural Sciences Edition
基金
云南省教育厅科学研究基金(2012Y315)
云南民族大学青年基金(11QN08)
云南民族大学研究生创新基金(2012YCX11)
