目录摘要 ........................................................................................................................................................ II Abstract .................................................................................................................................................. III1. 前言 ..................................................................................................................................................... 11.1 研究问题地由来 ...................................................................................................................... 11.2 文献综述 .................................................................................................................................. 11.3 研究目地 .................................................................................................................................. 22. 材料与方法 ......................................................................................................................................... 22.1 材料 .......................................................................................................................................... 22.2 方法 .......................................................................................................................................... 32.3 监督分类过程 .......................................................................................................................... 32.3.1 PCA 变换 ...................................................................................................................... 32.3.2 选择训练样本 .............................................................................................................. 32.3.3 用不同地分类方法进行监督分类 .............................................................................. 53. 结果与分析 ............................................................