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Proceedings Paper

A DWT-based robust semi-blind image watermarking algorithm using two bands
Author(s): Ersin Elbasi; Ahmet M. Eskicioglu
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Paper Abstract

Robust image watermarking is the process of embedding an invisible watermark in an image with the purpose of keeping the watermark intact after intentional attacks and normal audio/visual processes. A recent DWT image watermarking paper embeds a PRN sequence as a watermark in three bands, excluding the low pass subband, using coefficients that are higher than a given threshold T1. During watermark detection, all the coefficients higher than another threshold T2 are chosen for correlation with the original watermark. In this paper, we extend the idea to embed the same watermark in two bands (LL and HH). Our experiments show that for one group of attacks, the correlation with the real watermark is higher than the threshold in the LL band, and for another group of attacks, the correlation with the real watermark is higher than the threshold in the HH band.

Paper Details

Date Published: 17 February 2006
PDF: 11 pages
Proc. SPIE 6072, Security, Steganography, and Watermarking of Multimedia Contents VIII, 607221 (17 February 2006); doi: 10.1117/12.651154
Show Author Affiliations
Ersin Elbasi, The City Univ. of New York (United States)
Ahmet M. Eskicioglu, The City Univ. of New York (United States)


Published in SPIE Proceedings Vol. 6072:
Security, Steganography, and Watermarking of Multimedia Contents VIII
Edward J. Delp III; Ping Wah Wong, Editor(s)

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