@article {uvigo:analysispilot, title = {Analysis of Pilot-Based Synchronization Algorithms for Watermarking of Still Images}, journal = {Signal Processing: Image Communication}, volume = {17}, number = {8}, year = {2002}, month = {September}, pages = {661-633}, keywords = {data-hiding, watermarking}, author = {Manuel Alvarez-Rodr{\'\i}guez and Fernando P{\'e}rez-Gonz{\'a}lez} }