Watermarking Model And The Application To Copyright Protection Of Geo-spatial Information Digital Products

Geo-spatial information is important information describing the Earth for human life, which is the necessary foundation for national infrastructure construction and Geoscience research. In the current internet and digital era, acquisition, access, dissemination, replication to Geo-spatial information digital products is more convenient, and its security is becoming more prominent. How to use reliable technical means to protect copyright of Geo-spatial information digital products is a major and urgent social problem.Digital Watermarking is a forefront information security technology developed in recent years, which is effective means to protect the safety of geo-spatial information digital products. Vector data watermarking technology based as the theme, analyzing the insufficiency of the existing models for vector spatial data watermarking, proposes an approach based on adaptive sensing vector maps Watermarking model for geo-spatial data; Based on this guidance, designs and implements two methods for vector spatial data Watermarking algorithm for copyright protection. This paper’s mainly study results are as follows:1. Focuses on vector space data structure and data features, and combines the watermarking attack to require in-depth analysis for vector spatial data watermarking, which as the foundation of building model for vector spatial data watermarking.2. Summarizes watermarking based on three communications model and perception model, analyzes their insufficient for vector space data watermarking technology, and proposes a self-reacting vector space data watermarking model based on aggregate and mapping, describing the generation, embedding, extraction detection, and performance assessment of the model in detail, to provide support for watermarking algorithm design and implementation of spatial data model.3. Analyzing the specific application requirements of vector spatial data watermarking to identify the copyright owner, combined with zero-watermarking algorithm, designs and implements vector spatial data watermarking used to determine copyright owner, solves such strong contradiction with invisibility and robustness, provides technical support for responsibilities of the profits for the spatial data dissemination confirmation and the Leaker’s identity authentication.4. Discussing the specific application requirements of vector spatial data watermarking for integrity validation and tamper localization, based on the self-reacting vector space data watermarking model proposed, combined completely vulnerable watermark algorithm, designs and achieves vector spatial data watermarking for integrity validation and tamper localization, which can meet the requirements of both accuracy and invisibility, also can tamper with positioning to data block, effectively overcomes the shortcomings of traditional password authentication methods, and guarantees the security of spatial data to some extent.5. Develops spatial vector data watermarking system, introduces and shows the Functions and interfaces, and provides a basis experiment platform for further study for spatial vector data copyright protection based on digital watermarking technology.