Study on spatial interpolation method and its application

Spatial interpolation is important and fundamental to graphing, analysing and understanding of spatial data. In this paper, we introduce some spatial interpolation methods which are suited to 3D geological modeling. We have designed the framework of interpolation algorithm, and encapsulate API to GeoSIS system which provides an interface for easily accessing various interpolations. By calling API, the interpolated values can be calculated out based on the given samples, and then triangle irregular network surfaces can be constructed and visualized in 3D. The results of application show that the methods designed can to produce smooth surfaces which pass through all or most of the given samples and minimize error.