4S.D.Lin,C.F.Chen.A robust DCT-based watermarking for copyright protection[J].IEEE Transactions on Consumer Electronics,2000,46(3):415-421.
5M.A.Suhail,M.S.Obaidat.Digital watermarking-based DCT and JPEG model[J].IEEE Transaction on Instrumentation and Measurement,2003,52(5): 1640-1647.
6R.H.Juan,A.Martion,P G Femando.DCT-domain watermarking techniques for still images:detector performance analysis and a new structure[J].IEEE Transaction on Image Processnig,2000,9(l):55-68.