A Zero-Watermarking Scheme for Vector Map Based on Feature Vertex Distance Ratio

Abstract EN

With the rapid development of GIS and computer techniques, vector map data has been widely used inmany fields.

Since the production of map data is very costly, illegal copying will result in huge loss fordata owners.

In order to protect the copyright of vector data, digital watermarking has been employedin recent years.

In this paper, a zero-watermarking scheme for vector map data is proposed.

In theproposed scheme, FVDR (feature vertex distance ratio) is constructed based on the feature vertices ofobjects.

The feature data, FVDR, is combined with watermark to generate the zero-watermark.

Due tothe specially designed cover data, the proposed scheme is robust to geometrical attacks, vertex attacks,and object attacks.

The results of extensive experiments also demonstrate the robustness of the proposedscheme.