Reversing Global and Local Geometrical Distortions in Image Watermarking.

Dariusz Bogumil Reversing Global and Local Geometrical Distortions in Image Watermarking. 25-37 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3200&spage=25 2004 conf/ih/2004 Information Hiding db/conf/ih/ih2004.html#Bogumil04