@conference {cVentosa03,
	title = {Perceptual mask estimation from watermarked images},
	booktitle = {SPIE Electronic Imaging 2003},
	year = {2003},
	pages = {10{\textendash}17},
	isbn = {?},
	author = {Ventosa, S. and Elisa Sayrol and Vidal, J.}
}
