Implementation of digital watermarking system

Author

Chung, Yuk Ying ; Wong, Man To

Author_Institution

Sch. of Inf. Technol., Sydney Univ., NSW, Australia

fYear

2003

fDate

17-19 June 2003

Firstpage

214

Lastpage

215

Abstract

It is easy to make perfect unauthorised copies on a large scale in the music, film, book and software publishing industries. A digital watermark - a hidden copyright message with hidden serial numbers-can be used as a direct method of preventing unauthorised copying. This paper presents a novel digital watermarking system based on vector quantisation (VQ) and discrete cosine transform (DCT), which can embed a grey level image. The proposed new system can embed 16 times more information than other traditional DCT based watermarking system. The recovered images have high peak signal to noise ratio (PSNR) value and good visual quality. This system is robust in terms of both JPEG compression and other signal processing attacks.

Keywords

copyright; discrete cosine transforms; image coding; transform coding; vector quantisation; watermarking; DCT; JPEG compression attacks; PSNR; VQ; binary digital images; book publishing industry; copyright protection; digital watermarking system; film industry; grey level image; music industry; peak signal to noise ratio; signal processing attacks; software publishing industry; unauthorised copies; visual quality; Books; Computer industry; Discrete cosine transforms; Large-scale systems; Noise robustness; PSNR; Publishing; Transform coding; Vector quantization; Watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 2003. ICCE. 2003 IEEE International Conference on

Print_ISBN

0-7803-7721-4

Type

conf

DOI

10.1109/ICCE.2003.1218891

Filename

1218891