4Tirkel A Z,et al.Electronic watermark[J].Digital image computing Technology and Application (DICTA'93),1993,Macquarie University,663~673.
5Kutter M,Jordan F,Bossen F.Digital signature of color images using amplitude modulation[J].Preceeding of SPIE,storage and retrieval for image and video databases,1997,3022:518~526
6Cox I J,et al.A Secure Robust Watermarking for Multimedia[J].Workshop on Information Hiding,Cambridge,UK,1996,Number 1174 in Lecture Notes in Computer Science.Spring-Verlag,185~206.
7Azriel Rosenfeld,Avinash C Kak.Digital Picture Processing[M].New Youk San Francisco,London:Academic Press,1976:46-48
9J Johnston,N Jayant,R safranek.Signal compression based on models of human perception[J].proceedings of IEEE,1993:81 (10):1385~1422
10Choong-Hoon Lee; Hwang-Seok Oh; Yunju Baek; Heung-Kyu Lee;Adaptive digital image watermarking using variable size of blocks in frequency domain[J]:Proceedings of the IEEE Region 10 Conference Volume 1999 Page(s):702-705 vol.1