基于Oracle 10g的栅格数据共享机制研究与实现  

Study on sharing mechanism and applications of raster data based on Oracle 10g

作　　者：胡刚林[1] 苗放[1] 王权海[1] 杜根远[1] 谭磊[1] 晏金[1] 

机构地区：[1]成都理工大学信息工程学院,成都610059

出　　处：《信息技术》2009年第1期42-46,共5页Information Technology

摘　　要：空间栅格数据共享机制为遥感数据共享提供信息支持,它的建立和实现可以极大地促进空间数据交换、拓展遥感数据的应用范围。该机制采用了Oracle 10g新增的栅格数据类型GeoRaster提供的功能和方法,并结合Commons-FileUpload处理文件上传,FileInputStream类和FileOutput-Stream类分别处理文件读写访问,实现了栅格数据以Web方式共享,并可根据客户的需求由栅格金字塔产生不同分辨率的栅格数据。应用结果证明该机制推广方便,解决了大文件栅格数据共享困难的问题。The sharing mechanism of spatial raster data offers a support to data exchanging. The sharing program provides a platform for interchanging datum and improves the utilization of remote sensing datum. In the sharing program, the function of the new component of GeoRaster of the Oracle 10g is adopted. At the same time, the component of Commons-FileUpload is developed to upload files and the component of FilelnputStream and FileOutputStream to read and write files separately. Thus data sharing is realized on Web, and the system can produce multitudinous types of resolution by pyramidal structure according to user＇ s requirements. So the application reveals that this sharing mechanism fits the request of the large raster files shared.

关 键 词：数据共享机制 SDO—GEORASTER SDO—RASTER 影像金字塔 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]