计算机应用与软件2013，Vol.30Issue(5)：298-300,333,4.DOI:10.3969/j.issn.1000-386x.2013.05.084
基于双重Hilbert扫描的数字水印算法
A NOVEL WATERMARKING ALGORITHM BASED ON DOUBLE HILBERT SCANNING
陈画1
作者信息
- 1. 浙江长征职业技术学院 浙江杭州310023
- 折叠
摘要
Abstract
In this paper we present'a digital watermarking algorithm which is based on double Hilbert scanning.First,all the 4 × 4 blocks of the primary image are put in order according to Hilbert scanning sequence,then the pixels of each 4 × 4 block are transformed to control vertex vectors of the quasi-uniform cubic B-spline curves according to Hilbert scanning sequence.Secondly,the wavelet decomposition is applied to B-spline curves to obtain its low-resolution proportion.The watermark signal embedding is implemented by modifying the lowresolution coefficients relation of two B-spline curves of Hilbert logical neighbouring.When the watermark is embedded,B-spline control vertex will be reconstructed； the watermarking image will be obtained from the new control vertex with reverse Hilbert reset.Experimental results show that this algorithm is strong in withstanding the attacks of image compression,filtering and scaling.关键词
B样条曲线/数字水印/小波/多分辨表示Key words
B-spline curve / Digital watermarking /Wavelet / Multiresolution representation分类
信息技术与安全科学引用本文复制引用
陈画..基于双重Hilbert扫描的数字水印算法[J].计算机应用与软件,2013,30(5):298-300,333,4.
