Image analysis – Applications
Reexamination Certificate
2005-10-04
2005-10-04
Johns, Andrew W. (Department: 2621)
Image analysis
Applications
Reexamination Certificate
active
06952486
ABSTRACT:
A specific frequency extraction unit extracts a specific frequency component signal from an input image signal, a phase controller and amplitude controller control at least one of the phase and amplitude of the specific frequency component signal in accordance with watermark information, and a watermark information superposition unit superposes the specific frequency component signal on the input image signal to generate an image signal embedded with the watermark information.
REFERENCES:
patent: 5940135 (1999-08-01), Petrovic et al.
patent: 6111990 (2000-08-01), Sugaya et al.
patent: 6145081 (2000-11-01), Winograd et al.
patent: 6185312 (2001-02-01), Nakamura et al.
patent: 6427012 (2002-07-01), Petrovic
patent: 2002/0034224 (2002-03-01), Srinivasan
patent: 1 022 678 (2000-07-01), None
patent: 1 087 377 (2001-03-01), None
patent: 11-98341 (1999-04-01), None
patent: 2000-32406 (2000-01-01), None
patent: 2000-217088 (2000-08-01), None
Kazuki Takeuchi, et al. “A Proposal of Video Edit Detection System by Digital Wartermarking of Video Contents Characteristic Information” Jan. 1999, The 1999 Symposium on Cryptography and Information Security Kobe Japan pp. 331-336.
Takao Nakamura et al. “An Improvement of Watermark Robustness Against Moving and/or Cropping the area of the Image” Jan. 1999, The 1999 Symposium on Cryptography and Information Security Kobe Japan pp. 193-198.
Hyuncheol Park, et al. “Visible Watermarking using Verifiable Digital Seal Image” Jan. 2001, The 2001 Symposium on Cryptography and Information Security Kobe Japan pp. 103-108.
J. Fridrich, et al. “Images with Self-Correcting Capabilities” [Online] Proceedings of the IEEE International Conference on Image Processing, Kobe Japan, Oct. 1999.
J. P. Linnartz, et al. “Analysis of the Sensitivity Attack against Electronic Watermarks in Images” [Online] Proc. of the 2ndInformation Hiding Workshop, Portland, Oregon, Apr. 15-17, 1998.
Jiri Fridrich, “Methods for Tamper Detection in Digital Images” [Online] Proceedings of Multimedia and Security Workshop at ACM Multimedia, 1999.
Marc Schneider, et al. “A Robust Content Based Digital Signature for Image Authentication” [Online] In Proceedings of the 1996 IEEE International Conference on Image Processing, Lausanne, Switzerland, Sep. 1996.
W. Bender et al., “Techniques for Data Hiding” IBM System Journal, vol. 35 Nos 3&4, 1996, pp. 313-336.
Cox et al., “Secure Spread Spectrum Watermarking for Multimedia,”NEC Research Institure, Technical Report 95-10, Dec. 1995, pp. 1-33.
O Ruanaidh et al., “Phase Watermarking of Digital Images,”Proc. Int. Conf. on Image Processing(vol. III), Sep. 1996, pp. 239-242.
Huang et al., “Embedding Strategy for Image Watermarking in DCT Domain,”Proceedings APCC/OECC'99, Oct. 1999, pp. 981-984.
Alturki et al., “An Oblivious Robust Digital Watermark Technique for Still Images Using DCT Phase Modulation,”Proc. IEEE Int. conf. on Acoustics, Speech, and Signal Processing, Jun. 2000, pp. 1975-1978.
Kambayashi Toru
Koto Shin-ichiro
Muratani Hirofumi
Yamada Hisashi
Yamakage Tomoo
Johns Andrew W.
Kabushiki Kaisha Toshiba
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
LandOfFree
Digital watermark embedding method and apparatus, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital watermark embedding method and apparatus, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital watermark embedding method and apparatus, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3481194