A Digital Watermarking Algorithm for Image Based on Fractional Fourier Transform

Author

Yu, F.Q. ; Zhang, Z.K. ; Xu, M.H.

Author_Institution

Sch. of Commun. & Control Eng., Southern Yangtze Univ., Wuxi

fYear

2006

fDate

24-26 May 2006

Firstpage

1

Lastpage

5

Abstract

A novel digital watermarking embedding and detecting algorithm for image is presented, which uses the chirp signal as a watermark and embeds in the fractional Fourier transform (FRFT) domain of the image, and the watermark position and the transform order are used as the encryption keys. With the help of the property of the impulse characteristic in the FRFT domain for chirp signal, the watermark can be detected conveniently. The experiments results have show that the proposed algorithm not only is of good imperceptibility and security and is very robust to JPEG compression and to noise attacks, but also can provide protection under the cropping and the filtering

Keywords

Fourier transforms; cryptography; data compression; image coding; watermarking; JPEG compression; chirp signal; encryption keys; fractional Fourier transform; image digital watermarking algorithm; Chirp; Cryptography; Filtering algorithms; Fourier transforms; Frequency domain analysis; Noise robustness; Protection; Signal processing algorithms; Transform coding; Watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2006 1ST IEEE Conference on

Conference_Location

Singapore

Print_ISBN

0-7803-9513-1

Electronic_ISBN

0-7803-9514-X

Type

conf

DOI

10.1109/ICIEA.2006.257372

Filename

4025973