Zhang Li Sam Kwong Marian Choy Wei-wei Xiao Ji Zhen Ji-hong Zhang An Intelligent Watermark Detection Decoder Based on Independent Component Analysis. 223-234 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2939&spage=223 2003 conf/iwdw/2003 IWDW db/conf/iwdw/iwdw2003.html#LiKCXZZ03