This article is cited in 8 papers

IMAGE PROCESSING, PATTERN RECOGNITION

A new watermarking method for vector map data

Yu. D. Vybornova^a, V. V. Sergeev<sup>ab

a</sup> Samara National Research University, Samara, Russia
^b Image Processing Systems Institute of the RAS - Branch of the FSRC "Crystallography and Photonics" RAS, Samara, Russia

Abstract: In this paper, we propose a new digital watermarking method for protecting of vector data in geographic information systems. The method is based on a combination of two novel approaches. Firstly, the watermark information is embedded into the polygon map objects by cyclically shifting the list of vertices of each polygon. Secondly, instead of a bit vector, a raster image superimposed on the map is considered as a watermark. The major advantage of this method is that it does not distort the map by altering the coordinate values. A simple example demonstrates the method efficiency, as well as the robustness of the embedded watermark against geometric transformations usually performed when working with map data: translation, scaling, rotation and cropping.

Keywords: digital watermarking, geographic information systems, GIS, vector map, raster image, data protection.

Received: 15.06.2017
Accepted: 13.11.2017

DOI: 10.18287/2412-6179-2017-41-6-913-919