Robust blind watermarking method in wavelet DC components

Details Robust blind watermarking method in wavelet DC components Robust blind watermarking method in wavelet DC components

2005-08-23

2005-08-23

Johns, Andrew W. (Department: 2621)

Image analysis

Applications

Reexamination Certificate

active

06934403

ABSTRACT:
An apparatus and method for embedding and extracting digital watermarks using a blind mode based on wavelet transform which is robust to external attacks while being capable of minimizing a degradation in picture quality caused by embedding of the watermarks. In accordance with the invention, watermarks protection of the copyright for desired data are embedded in DC component domains of wavelet-transformed domains. In accordance with the invention, embedding of watermarks in a target image corresponding to a target domain in which the watermarks are to be embedded, is achieved by generating a data stream of the watermarks in accordance with a key value selected by the user, generating index information representing positions where the watermarks are to be embedded, in accordance with a key value selected by the ser, and reflecting the watermark data stream on data values of pixels in the target image at the positions based on the index information.

REFERENCES:
patent: 6226387 (2001-05-01), Tewfik et al.
patent: 6285775 (2001-09-01), Wu et al.
patent: 6332030 (2001-12-01), Manjunath et al.
patent: 6385329 (2002-05-01), Sharma et al.
patent: 6415042 (2002-07-01), Shin
patent: 6556689 (2003-04-01), Xia et al.
patent: 6687824 (2004-02-01), Shin
patent: 6694040 (2004-02-01), Hayashi et al.
patent: 6728409 (2004-04-01), Inoue et al.
patent: 6785401 (2004-08-01), Walker et al.
patent: 6792129 (2004-09-01), Zeng et al.
Ikpyo Hong, Intaek Kim, and Seung-Soo Han, Division of Electrical and Information Control Engineering Myongji University, “A Blind Watermarking Technique Using Wavelet Transform” 2001 IEEE, ISIE 2001, Pusan, Korea, pp. 1946-1950.

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