Abstract

A wavelet-based watermark casting scheme and a blind watermark retrieval technique are investigated in this research. An adaptive watermark casting method is developed to first determine significant wavelet subbands and then select a couple of significant wavelet coefficients in these subbands to embed watermarks. A blind watermark retrieval technique that can detect the embedded watermark without the help from the original image is proposed. Experimental results show that the embedded watermark is robust against various signal processing and compression attacks.

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History
Original Manuscript: October 30, 1998
Published: December 7, 1998

References

1. Houng-Jyh Wang and C.-C. Jay Kuo, "High fidelity image compression with multithreshold wavelet coding (MTWC)," SPIE's Annual Meeting - Application of Digital Image Processing XX, San Diego, CA July 27 - August 1 (1997)
2. A. Said and W. A. Pearlman, "A new, fast, and efficient image codec based on set partitioning in hierarchical trees," IEEE Trans. on Circuits and Systems for Video Technology, pp. 243-250, June (1996)
3. Xiang Gen Xia, Charles G. Boncelet and Gonzalo. R. Arce, "A multisolution watermark for digital images," International Conference on Image Processing, IEEE Signal Processing Society, Santa Barbara, CA, July (1997)

Author Affiliations

Houng-jyh Wang, Po-Chyi Su, C.-C. Jay Kuo

Univ. of Southern California

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