Generalized watermarking attack based on watermark ... - CVML

:DWHUPDUN$WWDFNV0$3 'HQRLVLQJ LLG *DXVVLDQ ZDWHUPDUN2( 0, I )w ~ N σz :LHQHU/HH ILOWHU ORFDOO\ LLG *DXVVLDQ LPDJHxˆ=y+z 6RIWVKULQNDJH JOREDOO\ LLG VWDWLRQDU\ *HQHUDOL]HG2*DXVVLDQ V** LPDJH /DSODFLDQ γ = 1 ~ sGG( x,1,σ xI )( 0, y − y −T) ( y − y)x³³2w2x+³2x( y − y)xˆ= y + maxsignwz +DUGVKULQNDJH JOREDOO\ LLG V** LPDJH( y − y) 1( y − > T )xˆ = y +yγ → 020