Attacks on all watermarks
spatial domain attacks
median filtering
stirmark
grayscale/color depth
down-scaling
smoothing
gamma correction
cropping
frequency domain attacks
JPEG
wavelet domain attacks
SPIHT
IW4
EPIC
EPWIC
WaveKit
EZW
JPEG2000
Peter Meerwald
,
pmeerw@cosy.sbg.ac.at