Yongliang Liu Xiaolin Yang Hongxun Yao Tiejun Huang Wen Gao Watermark Detection Schemes with High Security. 113-117 2005 conf/itcc/2005-2 ITCC (2) http://dx.doi.org/10.1109/ITCC.2005.295 db/conf/itcc/itcc2005-2.html#LiuYYHG05