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Proceedings Paper

Digital watermarking method using vector set of wavelet coefficients
Author(s): Madoka Hasegawa; Shigeo Kato
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Paper Abstract

In this paper, we propose a new watermarking method using vector sets of wavelet coefficients. In our proposal, unlawful attacks can be detected by finding invalid vector set caused by attacks and original watermark information is not required for extracting embedded data or detecting unlawful attacks. Though the watermarking method using a pair of wavelet coefficients has been already proposed by H.S. Kim et al, the original image is needed for extracting embedded data and unlawful attacks can be never detected in their method. Therefore, the author of contents cannot strongly claim a copyright to his contents when the embedded information is lost by the attack, because even if the attack is made, the watermark information is extracted without contradiction, rightly or wrongly. We propose a new watermarking method based on vector set of wavelet coefficients. The proposed scheme does not requires the original image to extract embedded data, and can detect unlawful attacks by detecting invalid vector set caused by attacks. Simulation results show that our proposed scheme indicates good picture quality in the watermarked image and robustness to some types of image processing attacks including JPEG compression.

Paper Details

Date Published: 8 March 2002
PDF: 10 pages
Proc. SPIE 4738, Wavelet and Independent Component Analysis Applications IX, (8 March 2002); doi: 10.1117/12.458733
Show Author Affiliations
Madoka Hasegawa, Utsunomiya Univ. (Japan)
Shigeo Kato, Utsunomiya Univ. (Japan)

Published in SPIE Proceedings Vol. 4738:
Wavelet and Independent Component Analysis Applications IX
Harold H. Szu; James R. Buss, Editor(s)

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