Ji Jeong Hui , Kim Dae Jung , Lyu Geun Ho

The KIPS Transactions:PartD, Vol. 10, No. 6, pp. 873-884, Oct. 2003
10.3745/KIPSTD.2003.10.6.873,   PDF Download:

Abstract

so far, significant achievements have been studied on the development of models for spatial and spatiotemporal objects with precisely defined boundaries. However, these modules can not be directly applied to spatial and spatiotemporal objects with indeterminate boundaries which are found in many applications for geographic analysis and image understanding. Therefore, in this paper we propose the spatiotemporal data model which is applicable for spatial and spatiotemporal objects with uncertainty. Based on this model, we defined topological relationships among the indeterminate spatiotemporal objects and designed the algorithm for the operations. For compatibility with existing spatial models, the proposed model has been designed by extending the spatiotemporal object model which is based on the open GIS specification. We defined indeterminate spatial objects, such as the objects whose position and the shape change discretely over time, and the objects whose shape changes continuously as well as the position. We defined topological relationships among these objects using the extended 9-IM. The proposed model can be efficiently applied to the management systems of natural resource data, weather information, geographic information, and so on.

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