遥感影像数据库的设计与实现,主要实现了多源遥感影像数据的管理。通过调用GDAL库,实现多源遥感影像数据的读取,对影像数据进行分块,建立影像金字塔,实现影像数据和元数据入库,建立高效的索引机制;根据窗口显示范围,调取合理的金字塔层数据,并对数据进行缓冲和实施处理显示;最后,设计元数据的管理。最终实现影像数据和元数据信息的一体化管理。
The design and implementation of remote sensing image database is used to manage multi - source remote sensing image data. By calling GDAL library, this paper discusses multi - source image data read, building image blocks, image pyramids, image data and metadata input and building effective spatial index. The reasonable level of the pyramid data is displayed according to the window display area after buffer processing. Then metadata management is designed. And finally the database can be used for integrated management of both image data and metadata.