@conference {icip03, title = {Optimal Strategies for Spread-Spectrum and Quantized-Projection image data hiding games with BER Payoffs}, booktitle = {IEEE International Conference on Image Processing (ICIP)}, year = {2003}, month = {sep}, publisher = {IEEE}, organization = {IEEE}, address = {Barcelona, Spain}, keywords = {data-hiding, watermarking}, author = {Pedro Comesa{\~n}a and Fernando P{\'e}rez-Gonz{\'a}lez and F{\'e}lix Balado} }