@inproceedings{paperid:1032775, author = {Taherinia, Amir Hossein and M. Jamzad}, title = {Two level DCT Based Digital Watermarking}, booktitle = {13th International Conference on Systems Signals & Image Processing, IWSSIP06}, year = {2006}, location = {Budapest}, keywords = {Blind Digital Watermarking; DCT; JPEG compression; Spread Spectrum Watermarking}, }