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GIS vector data copyright authentication method based on Moran index

A technology of Moran index and copyright authentication, applied in the field of geographic information security, can solve the problem that the algorithm robustness is difficult to meet the copyright protection, the copyright authentication is powerless, and the GIS vector data is distorted.

Active Publication Date: 2018-09-21
李安营
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Problems solved by technology

Although a single copyright mark technology can be used for copyright authentication such as tampering prompts, manufacturer identification marks, and traitor tracking of GIS vector data, it has the following two shortcomings: 1) The copyright mark embedded in GIS vector data products is easy to be Its manipulation software--GIS software's coordinate transformation, projection transformation, rotation, zoom-in, zoom-out and other operations are erased, and the robustness of the algorithm is difficult to meet the needs of copyright protection; 2) The embedding of copyright marks will cause certain damage to the GIS vector data. distortion of
[0003] Facing the massive characteristics and high-fidelity requirements of GIS vector data, copyright certification based on traditional copyright marking algorithms is becoming more and more powerless

Method used

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  • GIS vector data copyright authentication method based on Moran index
  • GIS vector data copyright authentication method based on Moran index
  • GIS vector data copyright authentication method based on Moran index

Examples

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Embodiment Construction

[0037] Further detailed description will be given below in conjunction with the accompanying drawings and embodiments.

[0038] In this example, select the shp layer data stl_home.shp( figure 2 ), the keyword is FIPSNO, and the attribute fields are mainly: HR7984, HR8488, HR8893. The key value is "10010101", and the authentication threshold is 0.85. Aiming at the whole process of data reading, copyright mark generation, copyright mark extraction and authentication, the present invention is further described in detail.

[0039] 1. Copyright mark generation process.

[0040] Step 1: Open the surface layer data file stl_home.shp, and the key value is "10010101";

[0041] Step 2: Based on the surface layer file stl_home.shp, according to the selected keyword FIPSNO, based on the direct 4-field proximity relationship and simple adjacency standard, determine the location proximity relationship w according to formula (1) ij ;

[0042] Step 3: According to the set of attribute f...

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Abstract

The invention discloses a GIS vector data copyright authentication method based on a Moran index. The method comprises a copyright mark generation process and a copyright mark extraction and an authentication process. According to the method of the invention, based on the advantages of the spatial autocorrelation property stability of a geographic element in GIS vector data and a characteristic that the important features of an original work is used to construct an original watermark signal for a zero watermark, the zero watermark is constructed through the Moran index, the method is used forcopyright authentication of GIS vector data, and the contradiction between the imperceptibility and robustness of GIS vector data watermark is solved well. The method is robust to various content maintenance operations such as geometric transformation, projection transformation, format transformation and the like, has sensitivity to content change operations such as feature attribute editing, feature space relationship editing and the like, and has the nature of a semi-fragile watermark required in the GIS vector data copyright authentication, and the data quality is not influenced.

Description

technical field [0001] The invention belongs to the field of geographic information security, and in particular relates to a method for constructing a zero watermark according to the Moran index of geographical elements in GIS vector data, and performing copyright authentication of the GIS vector data on this basis. Background technique [0002] At present, various algorithms for copyright authentication of GIS vector data products have been proposed, and certain copyright protection systems have appeared. However, various copyright marking attack methods have exposed the weaknesses of the current algorithms. Although a single copyright mark technology can be used for copyright authentication such as tampering prompts, manufacturer identification marks, and traitor tracking of GIS vector data, it has the following two shortcomings: 1) The copyright mark embedded in GIS vector data products is easy to be Its manipulation software--GIS software's coordinate transformation, pro...

Claims

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Application Information

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IPC IPC(8): G06T1/00G06Q30/00
CPCG06Q30/0185G06T1/005G06T1/0064
Inventor 李安营
Owner 李安营
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