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Proceedings Paper

Adaptive watermarking using successive subband quantization and perceptual model based on multiwavelet transform
Author(s): Ki Ryong Kwon; Ahmed H. Tewfik
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Paper Abstract

This paper presents an adaptive digital image watermarking scheme that uses successive subband quantization (SSQ) and perceptual modeling. Our approach performs a multiwavelet transform to determine the local image properties optimal and the watermark embedding location. The multiwavelet used in this paper is the DGHM multiwavelet with approximation order 2 to reduce artifacts in the reconstructed image. A watermark is embedded into the perceptually significant coefficients (PSC) of the image in each subband. The PSCs in high frequency subbands are selected by setting the thresholds to one half of the largest coefficient in each subband. After the PSCs in each subband are selected, a perceptual model is combined with a stochastic approach based on the noise visibility function to produce the final watermark.

Paper Details

Date Published: 29 April 2002
PDF: 15 pages
Proc. SPIE 4675, Security and Watermarking of Multimedia Contents IV, (29 April 2002); doi: 10.1117/12.465291
Show Author Affiliations
Ki Ryong Kwon, Univ. of Minnesota/Twin Cities (South Korea)
Ahmed H. Tewfik, Univ. of Minnesota/Twin Cities (United States)

Published in SPIE Proceedings Vol. 4675:
Security and Watermarking of Multimedia Contents IV
Edward J. Delp III; Ping Wah Wong, Editor(s)

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