Vector Watermarking Robust to Both Global and Local Geometrical Distortions

被引：7
|
作者：
Im, Dong-Hyuck [1 ]
Lee, Hae-Yeoun
Ryu, Seung-Jin [1 ]
Lee, Heung-Kyu [1 ,2 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Elect Engn & Comp Sci, Taejon 305701, South Korea
[2] Kumoh Natl Inst Technol, Dept Comp & Software Engn, Gyeongbuk 730701, South Korea
来源：
IEEE SIGNAL PROCESSING LETTERS | 2008年 / 15卷
关键词：
Local geometrical distortion; robust watermarking; vector watermarking; wavelet descriptor;
D O I：
10.1109/LSP.2008.2006338
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A blind watermarking algorithm for vector graphic images is presented. The algorithm is resilient to both global and local geometrical distortions. The polygonal line is represented by the wavelet descriptor. An additive watermarking scheme is used to embed the Watermark by slightly modifying the wavelet descriptor, and that causes invisible distortions to the coordinates of the vertices. The invariant properties of the wavelet descriptor ensure that the presented algorithm is resilient against both global and local geometrical distortions. Using vector graphic images from contour maps, we demonstrate that the presented algorithm outperforms the algorithm based on the Fourier descriptor.
引用
收藏
页码：789 / 792
页数：4
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