@conference {uvigo:datahiding, title = {Data Hiding for Copyright Protection of Still Images}, booktitle = {Emerging Techniques for Communication Terminals}, year = {1997}, month = {July}, pages = {285{\textendash}289}, publisher = {ENSEEIHT}, organization = {ENSEEIHT}, address = {Tolouse, France}, keywords = {data-hiding, watermarking}, author = {Juan R. Hern{\'a}ndez and Fernando P{\'e}rez-Gonz{\'a}lez and Jos{\'e} M. Rodr{\'\i}guez} }