A Robust Digital Watermarking in Cartographic Data in Vector Format
Min Lian-quan · Acta Geodaetica et Cartographica Sinica · 2008
Digital watermarking is an efficient solution to copyright protection of multimedia.A novel watermarking algorithm is proposed for copyright protection of cartographic data in vector format.To embedding watermarking of different size,two kinds of data classification rules are designed according to the amount of cartographic data of each layer.The experiments show that the algorithm is fairly good in imperceptibility and robustness,especially can resist renewal operations,such as adding,deleting,modifying and cutting out,and so on.