Fig. 7From: Optimal watermark embedding combining spread spectrum and quantizationEmpirical ROC curves of our method with MSSIM=0.9939, ρ t =16, and a 192-bit embedded message being subject to a VSA with different values of scaling factor, b JPEG compression with different values of QF, c AWGN with different values of standard deviation, d GLPF with different values of standard deviation and window sizeBack to article page