Title :
Dual Digital Watermarking Algorithm for Image Based on Fractional Fourier Transform
Author_Institution :
Coll. of Comput. & Electron. Inf., Maoming Univ., Maoming, China
Abstract :
In this paper, a dual digital watermarking embedding and detecting algorithm for image is presented, which uses the robust watermark and fragile watermark embed in the fractional Fourier transform (FRFT) domain of the image, and the watermark position and the transform order are used as the encryption keys. The experiment results show that the embedded watermark is perceptually invisible and robust to various image processing operations. Most importantly, the tampered place can be identified accurately.
Keywords :
Fourier transforms; cryptography; image coding; watermarking; digital watermarking algorithm; encryption key; fractional Fourier transform; image processing; robust watermark; Authentication; Copyright protection; Discrete cosine transforms; Discrete wavelet transforms; Fourier transforms; Image processing; Information security; Robustness; Watermarking; Wavelet domain; Content authentication; FRFT; digital watermarking; fragile watermark; robust watermark; tamper detection;
Conference_Titel :
Web Mining and Web-based Application, 2009. WMWA '09. Second Pacific-Asia Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3646-0
DOI :
10.1109/WMWA.2009.60
