%0 Journal Article
%T A novel weak chirp typed blind watermarking detection algorithm based on wavelet and duffing oscillators<br>小波域利用Duffing振子检测的图像水印算法
%A LI Dong-ming
%A WANG Dian-hong
%A YAN Jun Faculty of Mechanical
%A Electronic Information
%A China University of Geosciences
%A Wuhan Hubei
%A China
%A <br>李东明
%A 王典洪
%A 严军
%J 计算机应用
%D 2009
%I 
%X To enhance the robustness of the Chirp typed watermark,propose an algorithm based on Duffing Oscillators.First we change the Chirp signal which was embedded into the low frequency band of the host image in the wavelet domain into single frequency periodic signal,then we detect the periodic signal by the Duffing oscillators.The model of deterministic signal detection with unknown parameters is utilized to formulate the watermark detection.Experiments show that the detector perform effectively when the signal...
%K digital watermarking
%K Discrete Wavelet Transform (DWT)
%K Duffing oscillator
%K Chirp signal
%K weak signal detection<br>数字水印
%K 离散小波变换
%K Duffing振子
%K Chirp信号
%K 微弱信号检测
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=DF1C568E45DF6667EA2DD2E6C9768A02&yid=DE12191FBD62783C&vid=771469D9D58C34FF&iid=0B39A22176CE99FB&sid=08076B8B3CC96095&eid=AC2617B68B137D9D&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=12