摘要
三维地理信息数据能更好地反映真实世界、服务智慧城市管理;但其数据精度较高,具有一定的保密性,不能直接应用于公众服务,需对数据进行保密处理再提供给用户使用,以保证数据安全。构建了三维地理信息数据精度降低模型,对每个构成三维模型的节点坐标进行不规则偏移,从而降低三维数据模型精度,且不可逆。实验结果表明,该方法有效降低了三维数据精度,实现了数据脱密,生成了符合保密要求和用户需求的数据。
3D geographical information data can truly reflect the real world and better serve smart city management.However,due to the high precision of 3D geographical information data,it is confidential and cannot be directly applied to public services.In order to ensure data security,these data need to be kept confidential before being provided to users for use.We constructed a model for reducing the precision of 3D geographical information data.We used this model to irregularly offset the coordinates of each node forming the 3D model,reducing the precision of 3D data model,and this process was irreversible.The experimental result shows that this method can effectively reduce the precision of 3D data,and the data is generated to meet the confidentiality requirements and user needs.
作者
徐海燕
徐刚
章豪
朱安峰
XU Haiyan;XU Gang;ZHANG Hao;ZHU Anfeng(Zhejiang College of Security Technology,Wenzhou 325016,China;Wenzhou Collaborative Innovation Center for Space-borne,Airborne and Ground Monitoring Situational Awareness Technology,Wenzhou 325016,China;School of Geosciences and Info-Physics,Central South University,Changsha 410083,China;Wenzhou Institute of Geospatial Information Technology,Wenzhou 325016,China;Wenzhou Key Laboratory of Natural Disaster Remote Sensing Monitoring and EarlyWarning,Wenzhou 325016,China)
出处
《地理空间信息》
2024年第11期43-48,共6页
Geospatial Information
基金
2021年温州市基础性科研资助项目(S20210017)
浙江省自然资源厅2021年科技资助项目(2021-34)。
关键词
三维地理信息数据
数据共享
精度控制
脱密
3D geographical information data
data sharing
precision control
declassification
