Reasons of the Incremental Information in the Updating Spatial Database
In order to quickly extract and distribute the incremental informa-tion of spatial database, this work analyses the reasons of incremental informa-tion of spatial database with the instance of residential feature. Firstly, a new concept of increment is proposed based on the spatio-temporal change type and data delta. The change type describes the semantics of increment information and data delta describes the content of increment information. Based on this concept, the types of residential change and relevant data deltas are put for-ward. There are two catalogs of change type, i.e. subjective change and ob-jective change. The subjective change can be detailedly divided into 3 small change types and the objective change can be detailedly divided into 12 small change types. Additionally, the incremental information resulted from the objective change is formalized. Based on the above formalized changes, the automatic extraction of incremental information can be expediently pro-grammed. The classifying result was applied to the incremental information automatic extracting system of 1.250,000 topographic databases.
Incremental Information Spatio-temporal change Subjective changes Objective changes.
Huaji Zhu Huarui Wu Xiang Sun
National Engineering Research Center for Information Technology in Agriculture,Beijing, 100097, P.R. China
国际会议
南昌
英文
583-591
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）