基于球面离散格网的遥感影像数据存储策略

A remote sensing image storage strategy based on discrete global grid modal

球面离散格网模型是一种能够表达真实地理球面世界的数据模型,由于其格网划分的层次性,底层的遥感影像数据是以海量的小块数据块形式存在。本文根据球面离散格网遥感影像数据这种海量小数据块的特点,提出了一种局部分布式的虚拟存储方法,在维护影像存储区域相关性和剖分层次的同时,对遥感影像进行并行存取操作。

Discrete global grid modal is a data modal can precisely ex-press the real geography world.As the hierarchy of its partition,the form of the remote sensing image is massive small block data.This paper presents a local distribution storage method based on the char-acteristics of the RS images in discrete global grid modal.This meth-od can maintenance the area correlation of images and their partition hierarchy,and provide parallel access operation.