基于空间数据插值算法的空间散乱数据体绘制实现

体绘制技术是一种能够真实地反映空间数据场内部信息的可视化技术。在体绘制研究领域中，非规则的空间散乱数据体绘制目前仍然是一个研究热点。文中采用空间数据插值算法对散乱的原始数据进行网格化插值，然后使用光投影体绘制算法对规则网格数据进行体绘制。最后，通过新方法实现了某油藏区地下流体压力和孔隙度分布结构的体绘制。

Volume rendering of spatial scattered data based on spatial data interpolation algorithms

Volume rendering technology is one kind of visualization technology, which can truly represent the information within the 3D data sets. And volume rendering of 3D irregular data sets is still a focus in the volume rendering field. This paper introduced the means to transform the spatial scattered data to regular volume data by using spatial data interpolation algorithms, and then implemented the volume rendering of spatial scattered data by using ray casting algorithms. Finally, the volume rendering of the oil distributions in one part of oil storage field was achieved by using the principle introduced in this paper.