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Information Disguise and Restoration Applicable to Irregular Triangulation Digital Elevation Model

A digital elevation model, information camouflage technology, applied in image data processing, image data processing, program/content distribution protection, etc. High security performance, guaranteeing the effect of storage and transmission

Active Publication Date: 2018-02-02
THE PLA INFORMATION ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an information camouflage and restoration method suitable for irregular triangulation digital elevation models, so as to solve the problems of low security performance and low confusion of current irregular triangulation digital elevation models

Method used

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  • Information Disguise and Restoration Applicable to Irregular Triangulation Digital Elevation Model
  • Information Disguise and Restoration Applicable to Irregular Triangulation Digital Elevation Model
  • Information Disguise and Restoration Applicable to Irregular Triangulation Digital Elevation Model

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Embodiment Construction

[0055] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0056] Embodiment of the information camouflage method suitable for irregular triangulation digital elevation model of the present invention

[0057] In this embodiment, a piece of TIN DEM data containing 853 discrete elevation points is used as the information to be camouflaged. The experimental conditions are Intel Core i3CPU, 2.94GHz, memory 2G, and graphics card cache 256M. In order to realize the information camouflage of the above data, the present invention first uses the Tent chaotic map to scramble the data in the frequency domain, and then uses the Chinese remainder theorem to perform numerical substitution in the space domain to jointly complete the information camouflage, as figure 1 shown. The specific implementation steps are as follows:

[0058] 1. Normalize the elevation data of the TIN model

[0059] The distribution of d...

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Abstract

The invention relates to an information camouflage and restoration method suitable for an irregular triangulation digital elevation model, belonging to the technical field of digital elevation data processing. The information camouflage method of the present invention mainly includes two parts: spatial scrambling and numerical substitution, wherein spatial scrambling is realized by Tent chaos mapping, and numerical substitution is carried out by Chinese remainder theorem. Compared with the traditional information protection method, the present invention adopts the above-mentioned information camouflage method to carry out information protection, which has the outstanding advantages of strong deception and high security performance, and can provide security protection for important elevation information in the digital elevation model of irregular triangulation. It can effectively guarantee the storage and transmission of irregular triangulation digital elevation model data.

Description

technical field [0001] The invention relates to an information camouflage and restoration method suitable for an irregular triangulation digital elevation model, belonging to the technical field of digital elevation data processing. Background technique [0002] Triangulated Irregular Netting (TIN) is an important form of digital elevation model (Digital Elevation Model, DEM). By connecting discrete elevation sampling points, the terrain is expressed as non-overlapping continuous triangular surfaces. It is especially suitable for high-precision terrain modeling and simulation, and is widely used in national defense and economic fields. [0003] Data sharing is an important symbol of the information age. At present, users can download elevation data of different precision in most parts of the world in an open network environment, but high-precision data in key areas, especially these areas, still have important protection value . For example, the United States shares the 90...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00G06F21/16
Inventor 宋国民贾奋励陈令羽田江鹏孙启松卢瑞林雕段帅智梅霞高云亮
Owner THE PLA INFORMATION ENG UNIV
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