期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2007
卷号：XXXVI-4/W54
页码：23-27
出版社：Copernicus Publications
摘要：Geospatial data is a dynamic representative form of spatial information on surface of the earth. Facts and reasons on terrain changes are analyzed at first. Changes on the surface of the earth are mainly derived from variations of ground objects which are mostly caused by human activities and natural forces. Model, content and manner for updating and change detection of geospatial data are investigated. The process of updating geospatial data can be regarded as modifying, restoring and improving existing data content in order to acquire current representative form of geospatial data that is in accordance with predefined aim. In this paper, technical framework of 3D change detection on existing DEM, DOM, DLG and new stereo imagery is presented. Difficulties of 3D change detection are investigated, and resurvey or update is the primary issue. Knowledge discovery in databases (KDD) and data mining (DM) aim at extracting valuable knowledge from huge amount of original data, in order to describe past trend and future tendency. The paper presents the thought of bringing the framework of 3D change detection into the whole systematic framework of KDD and DM
