A Semi-fragile Digital Watermarking Algorithm for 2D Vector Graphics Tamper Localization

Author

Zhang, Han-ling ; Gao, Ming-ming

Author_Institution

Coll. of Comput. & Commun., Hunan Univ., Changsha, China

Volume

1

fYear

2009

fDate

18-20 Nov. 2009

Firstpage

549

Lastpage

552

Abstract

A semi-fragile digital watermarking algorithm resisting affine transformation based on 2D vector graphics was designed for tamper localization. We divide graphics vertices after extraction, and then transform the construction of 8 Ã— 8 matrix by DCT; authentication watermark is generated by the relationship between the DCT coefficients, and then embedded in the middle frequency region of the coefficients; pre-processing is proposed to eliminate geometric distortion before detecting. High invisibility, robust against common geometrical distortions (e.g. translation, rotation and scaling) and good capability of tamper localization have been proved by experimental results.

Keywords

computer graphics; discrete cosine transforms; image coding; matrix algebra; message authentication; watermarking; 2D vector graphics; DCT; authentication watermark; semifragile digital watermarking algorithm; tamper localization; Authentication; Computer graphics; Computer security; Discrete cosine transforms; Educational institutions; Geographic Information Systems; Information security; Robustness; Spline; Watermarking; 2D vector graphics; DCT; affine transformation; semi-fragile watermarking; tamper localization.;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Information Networking and Security, 2009. MINES '09. International Conference on

Conference_Location

Hubei

Print_ISBN

978-0-7695-3843-3

Electronic_ISBN

978-1-4244-5068-8

Type

conf

DOI

10.1109/MINES.2009.224

Filename

5368415