Table 20.

Comparative study of our proposed scheme with some existing schemes.

descriptionproposed schemeLai & Tsai [16]Rastegar et al. [18]Lagzian et al. [17]Ganic & Eskicioglu [15]Makbol & Khoo [12]
type of schemeblindblindnon-blindnon-blindnon-blindblind
type of transformDCT + SVDDWT + SVDRadon + DWT + SVDRDWT + SVDDWT + SVDRDWT + SVD
watermark action before embeddingno actionno actionSVDSVDSVDno action
size of host image512 × 512512 × 512257 × 257512 × 512512 × 512512 × 512
size of watermark image256 × 256256 × 25633 × 33512 × 512256 × 256512 × 512
tested host imageLena, Pepper, Baboon, BarbaraLenaLena, Pepper and BaboonLenaLenaLena, Pepper and Baboon
type of watermarkGreyGreyGreyGreyGreyGrey
False positive problemnoyesyesyesyesyes