面向影像数据的“一张图”数据库清理方案研究

“One Map”database cleaning scheme for image data

随着自然资源"一张图"的深入应用,日益增长的海量数据给数据库日常管理以及系统的正常运行带来了一定困难,数据库清理迫在眉睫。针对这一问题,文章分析了数据库清理原则,提出了影像数据清理方案。方案以南京市为例,改变了传统的影像存储模式和动态切片方法,设计实现基于ArcGIS SERVER和GeoWebCache的遥感影像切片更新发布模式,将影像数据从数据库中剥离出来。试验证明,该方法具有可行性和适用性,有效缓解了"一张图"数据库的存储压力,优化了数据库性能,同时提高了影像数据的更新发布效率,简化了切片生产过程。

With the in-depth application of"One Map"of natural resources,the increasing mass of data has brought certain difficulties to daily database management and system operation with a pressing need for database cleaning.In view of this,this paper analyzes the principles of database cleaning and proposes an image data cleaning scheme.The scheme takes Nanjing as an example,which changes the traditional image storage mode and dynamic tiling method,designs and implements the update and release mode for remote sensing image tiling based on ArcGIS Server and GeoWebCache,and removes the image data from the database.The experiment proves that the proposed method is feasible and applicable,which effectively relieves the storage pressure of the"One Map"database,optimizes the database performance,and improves the update and release efficiency of the image data by simplifying the tiling process.