6Kutter M,Jordan F.Bossen.Distal signature of color images using ampLitude modulation.Storage and Retrieval for Image and Video Databases V San Jose,SPIE,1997:P518-526.
8Koch E,Zhao J. Toward robust and hidden image copyright labeling in proc [C]//Workshop Nonlinear Signal and Image Processing. Marmaros, Greece, 1995.
9Lin S D,Shie S C,Chen C F.A dct-based image watermarking with threshold embedding [J]. International Journal of Computers & Applications, 2003, 25 (2) : 357 - 362.
10Hsu C T, Wu J L. Hidden dgital watermarks in images [J]. IEEE Trans Image Processing, 1999(8) :58-68.