三维向量筛及其在遥感地质找矿中的应用

三维空间具某种属性的向量集群通常呈椭球状分布。用常规的方法提取这部分信息，要通过复杂的计算才能实现。本文推导出一种能快速提取三维信息的方法，称为三维向量筛。并介绍一个它在遥感图像中提取金矿化蚀变带信息的应用实例。

Three-Dimentional Vector Sifter and Its Application in Geological Exploration

The vectors, with certain attributes in three-dimensional space, are usually distributed at random and form an ellipsoidal cluster. The extraction of this part of imformation with the conventional method is allways very difficult owing to complex calculation. The three-dimensional vector sifter, which can extract imformation rapidly, is developed in this paper, and an application example is given, which is used in the extraction of the imformation of a gold mineralization- alteration zone in remote-sensing images.