中文摘要：

在分析了灾区信息共享必要性的基础上。提出了适合多源灾区影像的“遥感影像／航拍影像＋PolygonGrid＋元数据”的基本数据结构。PolygonGrid是灾区影像空间信息的抽象，采用PolygonGrid可以避免直接处理海量灾区影像；采用ISO19115元数据标准实现对灾区影像相关信息的描述；基于数据库仓库技术实现对影像质量的表达、存储、评价保证。最后，本文提出了多源灾区信息共享服务平台的主要体系，并在该体系的基础上实现了多种服务形式，包括：定制的共享网站和符合OGC规范的WMS、WFS和WCS服务等，在技术上为应急救灾任务实施提供有力的保障。

英文摘要：

This paper introduces the ＂Remote Sensing Image / Aerial Photograph ＋ PolygonGrid ＋ Metadata＂ structure which is brought forward to solve the multi- source disaster area images management and sharing problems. A PolygonGrid is a feature that represents the spatial information of a disaster area images, and it can help to fulfill spatial operations without loading large volume disaster image. ISO 19115 is adopted as the metadata standard for different types of disaster images, and the metadata information is formatted into XML before storing or processing. Based on data mining techniques, finally, we design and implement a tool that can manage heterogeneous data quality information and provide functions to support expert users in the assessment of the fitness for use of a given image. The platform provides two kinds of service, i · e. direct images sharing service by the website and interoperation service by a series of accessible function interfaces which are encapsulated as web services complying with WMS, WFS, WCS, etc.