Static dual watermarking of vector maps to anti-interpretation attacks
Guoyin Zhang · Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University · 2010
Digital watermarks for vector maps are less robust against anti-interpretation attacks.A static dual watermarking algorithm was proposed that begins with a child copyright watermark that is formed using copyright information.This can be embedded into another child watermark consisting of features selected by fuzzy c-means clustering from the vector map.Both are then formed into a compound watermark.Experimental results showed that the algorithm can enhance resistance to geometric transformations and compression.In particular,the mutual authentication of dual watermarking improved robustness against anti-interpretation attacks.