Vector data watermark anti-counterfeiting method based on geographical semantics support

A technology of vector geographic data and watermark, applied in the anti-counterfeiting field of vector geographic data watermarking based on geographic semantic support, can solve the problems of destroying the invisibility of watermark and data availability, reducing fidelity, data fidelity absolute error of fixed-point data, etc. , to ensure availability and invisibility, enhance resistance, and improve robustness
CN103310134BInactive Publication Date: 2015-02-25HUNAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN UNIV OF SCI & TECH
Publication Date
2015-02-25
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a vector data watermark anti-counterfeiting method based on geographical semantics support. The method comprises the steps as follows: creating a fidelity description knowledge rule base of vector geographical data based on geographical semantics, creating a watermark carrier model according to the fidelity description knowledge rule base, embedding watermark information based on a typical watermark algorithm, extracting the watermark information, and checking the watermark information. According to the method, the watermark information is embedded into an application-sensitive data characteristic set based on the fidelity description knowledge rule base of the geographical data, so that the watermark robustness is effectively improved; by the typical watermark algorithm, a watermark embedding model taking high fidelity as a solving target guarantees the usability and the invisibility of watermark version data and improves the practicality of the algorithm; through dimensionless treatment of a watermark carrier, a geometric attack is invalid for the watermark model; and a method for adopting repeated embedding in a watermark embedding process and electing in a detecting process effectively improves the resistance of the watermark model to a common watermark attack.
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Description

technical field

[0001] The invention relates to an anti-counterfeiting method for vector geographic data watermarking, more specifically, an anti-counterfeiting method for vector geographic data watermarking based on geographical semantic support. Background technique

[0002] The application of geographic information system (GIS) has been developed to the level of popular social application, which requires the distribution range of spatial data carrying geographic information to be correspondingly wide. In this context, it is imminent to solve the copyright protection problem of spatial data and ensure the safe distribution of geospatial data. As the preferred solution for copyright protection, digital watermarking of geospatial data has aroused the interest of many scholars at home and abroad, and a lot of work has been done on it.

[0003] The existing research work can be roughly divided into the following categories: (1) Arrange the data vertices in the local range int...

Claims

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