A Novel Infringement Detection Method for GIS Vector Data

Abstract

There is undoubtedly a groundswell of support for the concept of geographic data sharing with the rapid development and wide-ranging application of geographic information science. However, copyright protection and infringement detection in the process of geographic data sharing has always been an important issue that needs to be addressed urgently. In this paper, we present a novel infringement detection method for GIS vector data to compensate for the shortcomings of vector data digital watermarking technology in infringement detection. The method determines whether infringement exists by the duplication degree between the original data and the vector data to be detected in three features including feature features, included angle features and vertex features which gets by using the spatial information of vector data to perform the feature matching based on GeoJSON format data. The experimental results indicate that the proposed algorithm can effectively resist common geometric attacks, such as interpolation attack, deletion attack, similarity transformation attack, feature order scrambling attack, and feature simplification attack, on vector data, which proves that the proposed algorithm has excellent robustness and meets the requirements of practical application. but there is growing demand for geographic data in society. This forms a contradiction, and the issue of geographic data sharing needs to be resolved as soon as possible.In order to promote the sharing of geographic data, some international organizations and countries have set up systems and platforms [3][4][5] dedicated to the sharing of geographic data, and there have also been a number of crowd-sourced geographic information platforms [6] established spontaneously. The emergence of these platforms has provided good geographic data support for research, education, and development of the geographic information discipline, but still fails to resolve the above contradiction. there is an urgent demand for a technology that can protect the copyright of geographic data effectively in the case of imperfect laws and regulations.At present, encryption control technology and digital watermarking technology are the main means of geographic data copyright protection [8]. Among them, encryption control technology combines computer hardware, computer software, and geographic data to control the reading and writing of geographic data at the bottom of the computer system. It can prevent users from reading, abusing, and tampering with unauthorized geographic data on unauthorized computers, and can prevent illegal acts such as infringement and disclosure of geographic data in advance. However, this technology is more suitable for the protection of classified data than the public-oriented geographic data sharing process because it is demanding on software and hardware. Digital watermarking technology is an after-the-fact pursuit technique [9], which embeds watermark information (such as a copyright information identification image) into geographic data, and the geogra...

Blind Digital Watermarking Algorithm against Projection Transformation for Vector Geographic Data

“…They are widely used in map applications and services with the advantages of high accuracy and low redundancy. At the same time, many security issues of vector geographic data have emerged, such as piracy, leakage, and malicious tampering [3][4][5]. The security of vector geographic data is directly related to the sound development of the geographic information industry.…”