IP 地址:IP 地址是一个32位的二进制数,是将计算机连接到 Internet 的国际协议地址。它是 Internet 主机的一种数字型标识,一般用小数点隔开的十进制数表示,如121.255.255.154。IP 地址由网络标识(netid)和主机标识(hostid)两部分组成,...IP 地址:IP 地址是一个32位的二进制数,是将计算机连接到 Internet 的国际协议地址。它是 Internet 主机的一种数字型标识,一般用小数点隔开的十进制数表示,如121.255.255.154。IP 地址由网络标识(netid)和主机标识(hostid)两部分组成,网络标识用来区分 In-ternet 上互联的各个网络,主机标识用来区分同一网络上的不同计算机(即主机)。IP 地址的分类:IP 地址通常分三类:(1)A 类。IP展开更多
A large class of multimedia and biomedical signals can be modeled as Autotegessive （AR） random processes. Pefformance of watermarking embedding algorithms utilizing this host model is still left unexplored. The auth...A large class of multimedia and biomedical signals can be modeled as Autotegessive （AR） random processes. Pefformance of watermarking embedding algorithms utilizing this host model is still left unexplored. The authors investigate the decoding perform-nance of Spread Spectrum （SS） embedding algorithm in the standard Additive White Gaussian Noise （AWGN） channel with the host signal being modeled as AR process. The SS embedding algorithm also use linear interference cancelation in the subspace spanned by watermark pattern. They study the influence of design parameters on the decoding performance. The analytic result is verified by Monte Carlo simulation on synthesized AR process. The result may be helpful to design watermarking system for speech, biomedical and image signals.展开更多
基金supported by research project of“SUSTSpring Bud”:the research on decoder under desynchronization attack for data hiding systems
文摘A large class of multimedia and biomedical signals can be modeled as Autotegessive （AR） random processes. Pefformance of watermarking embedding algorithms utilizing this host model is still left unexplored. The authors investigate the decoding perform-nance of Spread Spectrum （SS） embedding algorithm in the standard Additive White Gaussian Noise （AWGN） channel with the host signal being modeled as AR process. The SS embedding algorithm also use linear interference cancelation in the subspace spanned by watermark pattern. They study the influence of design parameters on the decoding performance. The analytic result is verified by Monte Carlo simulation on synthesized AR process. The result may be helpful to design watermarking system for speech, biomedical and image signals.
