一种基于三角函数的矢栅地理数据可逆几何脱密模型

doi:10.13474/j.cnki.11-2246.2017.0322

测绘通报 ›› 2017, Vol. 0 ›› Issue (10): 89-94.doi: 10.13474/j.cnki.11-2246.2017.0322

一种基于三角函数的矢栅地理数据可逆几何脱密模型

于辉^1,2, 周卫^1,2, 马心念^1,2

1. 南京师范大学虚拟地理环境教育部重点实验室, 江苏南京 210023;
2. 江苏省地理信息资源开发与利用协同创新中心, 江苏南京 210023

收稿日期:2017-01-12 修回日期:2017-04-08 出版日期:2017-10-25 发布日期:2017-11-07
通讯作者: 周卫。E-mail:13611577060@163.com E-mail:13611577060@163.com
作者简介:于辉(1990-),男,硕士生,主要研究方向为矢栅地理数据脱密。E-mail:1079396664@qq.com
基金资助:
国家自然科学基金（41371374）

A Reversible Decryption Model for Vector and Raster Integration Based on Trigonometric Function

YU Hui^1,2, ZHOU Wei^1,2, MA Xinnian^1,2

1. Ministry of Education Key Laboratory of Virtual Geographic Environment, Nanjing Normal University, Nanjing 210023, China;
2. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China

Received:2017-01-12 Revised:2017-04-08 Online:2017-10-25 Published:2017-11-07

摘要/Abstract

摘要： 矢栅地理数据是基础地理信息数据的重要组成部分，其安全保护研究十分重要。我国有关法律法规对公开版地图的脱密几何精度有明确规定，基础地理数据需要脱密后才能公开共享使用。本文在分析三角函数脱密特性和矢栅地理数据特征的基础上，顾及矢栅地理数据叠加使用的特点，设计了一种基于三角函数的矢栅地理数据一体化的可逆脱密模型。试验证明，该模型较好地保持了地理实体的拓扑关系，脱密处理速度快，安全性高，误差可控，数据接边好。

关键词: 矢栅地理数据, 脱密模型, 三角函数, 脱密特征

Abstract: Vector-raster geographic data are important part of basic geographic information data, hence the research on its security is very important. These data are open for share and use only when decrypted in terms of our country's relevant laws and regulations on decrypted geometric precision of public maps. Based on analysis of properties of description by trigonometric function, this paper devised a reversible description model for integrated vector-raster geographic data by trigonometric function with considering of the characteristics of stack use of these data. Experiments show that the model maintains well the topological relations of geographical entities with fast processing speed, high security, controlled error and good data connections.

Key words: vector-raster geographic data, decryption model, trigonometric function, decryption characteristic

中图分类号:

P208

于辉, 周卫, 马心念. 一种基于三角函数的矢栅地理数据可逆几何脱密模型[J]. 测绘通报, 2017, 0(10): 89-94.

YU Hui, ZHOU Wei, MA Xinnian. A Reversible Decryption Model for Vector and Raster Integration Based on Trigonometric Function[J]. 测绘通报, 2017, 0(10): 89-94.

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一种基于三角函数的矢栅地理数据可逆几何脱密模型

A Reversible Decryption Model for Vector and Raster Integration Based on Trigonometric Function

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