Improvement of Detection Performance in DWT-Based Image Watermarking under Specified False Positive Probability

Nakamoto Masayoshi

Sayama Kohei

Muneyasu Mitsuji

Harano Tomotaka

Ohno Shuichi

IEICE transactions on fundamentals of electronics, communications and computer sciences

For copyright protection, a watermark signal is embedded in host images with a secret key, and a correlation is applied to judge the presence of watermark signal in the watermark detection. This paper treats a discrete wavelet transform (DWT)-based image watermarking method under specified false positive probability. We propose a new watermarking method to improve the detection performance by using not only positive correlation but also negative correlation. Also we present a statistical analysis for the detection performance with taking into account the false positive probability and prove the effectiveness of the proposed method. By using some experimental results, we verify the statistical analysis and show this method serves to improve the robustness against some attacks.

image watermarking

discrete wavelet transform (DWT)

false positive probability

analysis of detection

performance

Electrical engineering [ 540 ]

eng

電子情報通信学会

Copyright (c) 2011 IEICE

[NCID] AA10826239

[ISSN] 0916-8508

[DOI] 10.1587/transfun.E94.A.661

[URI] http://search.ieice.org/

[DOI] http://dx.doi.org/10.1587/transfun.E94.A.661