Discrete fourier transform (DFT) watermark

Details Discrete fourier transform (DFT) watermark Discrete fourier transform (DFT) watermark

2008-05-20

2008-05-20

Bella, Matthew C. (Department: 2624)

Image analysis

Applications

Reexamination Certificate

active

07376241

ABSTRACT:
A Discrete Fourier Transform watermark for use with digital images/video. A Y component of a Y, U(Cb), V(Cr) digital data stream representing color components of digital video is extracted as the digital data for embedding the watermark. The digital data is then scaled to a standard size. A Discrete Fourier Transform (DFT) is performed on the digital data, and a magnitude domain of the Discrete Fourier Transform is computed. The watermark is embedded into selected frequency bands of the computed magnitude domain of the Discrete Fourier Transform, thereby creating a watermarked magnitude domain. The selected frequency bands comprise one or more middle frequency bands, and the middle frequency bands comprise a band of circular rings of the magnitude domain. An inverse Discrete Fourier Transform is performed on the watermarked magnitude domain to reconstruct the digital data with the embedded watermark.

REFERENCES:
patent: 6590996 (2003-07-01), Reed et al.
patent: 7123741 (2006-10-01), Ono
patent: 2003/0077002 (2003-04-01), Silverstein et al
patent: 2003/0228031 (2003-12-01), Rhoads
patent: 2004/0050931 (2004-03-01), Ono et al.
patent: 2004/0086200 (2004-05-01), Aas
patent: 0 746 126 (1996-12-01), None
patent: 0 798 892 (1997-10-01), None
patent: 0 982 927 (2000-03-01), None
Augot, D., et al., “Secure Delivery of Images Over Open Networks”, Special issue on identification and protection of multimedia information, Proceedings of the IEEE, Jul. 1999, 87(7): 1251-1266.
Cox, Ingemar J., et al., “Secure Spread Spectrum Watermarking for Multimedia”,IEEE Transactions On Image Processing, vol. 6, No. 12, Dec. 1997, pp. 1673-1687.
Koch, Eckhard, et al., “Copyright Protection for Multimedia Data”, Fraunhofer Institute for Computer Graphics, Darmstadt, Germany, Dec. 16, 1994, pp. 1-15.
Haitsma, J., et al., “A Watermarking Scheme For Digital Cinema”, Proceedings of the International Conference On Image Processing, ′Online! Oct. 7-10, 2001, pp. 487-489, XP002249974 Thessaloniki.
Swanson, Mitchell D., et al., “Multiresolution Scene-Based Video Watermarking Using Perceptual Models”,IEEE Journal On Selected Areas In Communications, vol. 16, No. 4, May 1998, pp. 540-550.
Zhou, Wensheng, et al., “On-line Scene Change Detection of Multicast Video”,IEEE Journal of Visual Communication and Image Representation, vol. 12, Mar. 2001, pp. 1-16.
Shapiro, Jerome M., “Embedded Image Coding Using Zerotrees of Wavelet Coefficients”,IEEE Transactions on Signal Processing, vol. 41, No. 12, Dec. 1993, pp. 3445-3462.
Stromberg, Michael, “Secure Content Protection: An Overview of the Proposed Security Mechanisms In Digital Cinema”, KTH Advanced Media Technology Lab, ′Online! Sep. 20, 2001, XP002249975 Stockholm, retrieved from the Internet: URL:www.amt.kth.es on Aug. 1, 2003, 17 pages.
Said, Amir, et al., “A New, Fast, and Efficient Image Codec Based On Set Partitioning In Hierarchical Trees”,IEEE Transactions On Circuits and Systems For Video Technology, vol. 6, No. 3, Jun. 1996, pp. 243-250.
Wolfgang, Raymond B., et al., “Perceptual Watermarks for Digital Images and Video”,Proceedings of the IEEE, vol. 87, No. 7, Jul. 1999, pp. 1108-1126.
Lin, C. Y., et al., “Rotation, Scale, and Translation Resilient Watermarking for Images”, IEEE, Trans. On Image Processing, vol. 10, pp. 767-782, May 2001.
Pereira, S., et al., “Fast Robust Template Matching for Affine Resistant Image Watermarks”, Proc. 3rdInt. Information Hiding Workshop, pp. 207-218, 1999.
Solachidis, V., et al., “Circularly Symmetric Watermark Embedding in 2-D DFT Domain”, IEEE Trans. On Image Processing, vol. 10, pp. 1741-1753, Nov. 2001.

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