TY - CONF T1 - Worst case additive attack against quantization-based watermarking techniques T2 - IEEE International Workshop on Multimedia Signal Processing Y1 - 2004 A1 - Jose Emilio Vila-Forcén A1 - Sviatoslav Voloshynovskiy A1 - Oleksiy Koval A1 - Thierry Pun A1 - Fernando Pérez-González JF - IEEE International Workshop on Multimedia Signal Processing CY - Siena, Italy ER -