摘要
时空变化分类是地理信息建模与更新的一个核心问题,直接影响着数据存储组织、增量信息采集、联动更新处理和变化信息发布的效率与水平。以往主要研究目标整体的变化分类,对目标差异部分的变化分类研究甚少。分析时空目标公共部分在差异类型区分中的作用,认为应兼顾异同部分,提出一种基于目标差、被差和交的目标快照差三元组,为时空目标差异部分的分类描述提供形式化方法。继而对面、线的快照差进行形式化分类描述,给出有实际意义的变化类型。然后根据线目标快照差类型构建对应的增量更新操作;按照面目标快照差类型进行时空目标的变化提取及分类试验等。
The classification and description of spatial incremental changes is one of the fundamental problems in geo-spatial data modeling and updating.It plays a significant role in the spatio-temporal data organization,incremental change capture,event-based updating and propagation of changes.Existing studies in this field is focused mainly on the classification of the whole of objects and the incremental changes of spatial objects has not been well addressed.The study examined the role of the common parts of two spatio-temporal objects and proposed to consider both the common parts and differences in the distinguishing and formalizing the incremental changes of spatial objects.A formal description model is proposed based on three elements,i.e.,difference,difference by,and intersection,with the associated regularization operation.A formal classification of the incremental changes is derived for both area and linear objects.The results of this formal classification have been applied to develop the operations of incremental capture and to calculate and analyze the incremental changes.
出处
《测绘学报》
EI
CSCD
北大核心
2012年第1期108-114,共7页
Acta Geodaetica et Cartographica Sinica
基金
国家自然科学基金(40701141)
国家测绘地理信息局科技领军人才基金
关键词
时空变化
目标快照差
分类
增量
更新
sptaio-temporal
object increments
classification
incremental changes
updating
