Conference paper
Fragile imperceptible digital watermark with privacy control
D. Coppersmith, Fred Mintzer, et al.
Proceedings of SPIE - The International Society for Optical Engineering
Conditions are given for a two-band multirate filter bank to be alias free and to have a unity frequency response. It is shown that the class of quadrature mirror filters (QMFs) that satisfies these conditions is quite limited. A class of filters that does satisfy these conditions is given, and a simple procedure for designing filters from this class is presented with an example.
D. Coppersmith, Fred Mintzer, et al.
Proceedings of SPIE - The International Society for Optical Engineering
Francis P. Giordano, Gordon Braudaway, et al.
Proceedings of SPIE - The International Society for Optical Engineering
H.M. Gladney, Fred Mintzer, et al.
Communications of the ACM
Fred Mintzer, Gordon Braudaway, et al.
ICIP 1997