Discrete Polynomial Transform for digital image watermarking application

被引：2

作者：

Le, Lam ^{[1
]}

Krishnan, Sridhar ^{[1
]}

Ghoraani, Behnaz ^{[1
]}

机构：

[1] Ryerson Univ, Dept Elect & Comp, Toronto, ON, Canada

来源：

2006 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO - ICME 2006, VOLS 1-5, PROCEEDINGS | 2006年

关键词：

image watermarking; spread spectrum; data hiding; discrete phase polynomial transform; Hough-radon transform; chirp modulation;

D O I：

10.1109/ICME.2006.262844

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

In this study, we propose a new way to detect the image watermark messages modulated as linear chirp signals. The spread spectrum image watermarking algorithm embeds linear chirps as watermark messages. The phase of the chirp represents watermark message such that each phase corresponds to a different message. We extract the watermark message using a phase detection algorithm based on Discrete Polynomial Phase Transform (DPT). The DPT models the signal as polynomial and uses ambiguity function to estimate the signal parameters. The proposed method not only detects the presence of watermark, but also extracts the embeded watermark bits and ensures the message is received correctly. The robustness of the proposed detection scheme has been evaluated using checkmark benchmark attacks, and we found a guaranteed maximum bit error rate of 15%, which watermark message is correctly detected using DPT.

引用

页码：1569 / +

页数：2

共 6 条

[1]

[Anonymous], INF HID WORKSH 3 PIT

[2]

ERKUCUK S, 2002, IEEE INT C MULT EXP, V2, P513

[3] Multicomponent signal analysis using the polynomial-phase transform [J].