该文提出了一种基于投影追踪的高光谱图像异常点检测方法。

In this paper, a new method of hyperspectral anomaly detection based on project pursuit is presented.

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传统的特征提取方法主要有：主分量分析、奇异值分解、投影追踪、自组织映射等。

Classical feature extraction methods include: Principle Component Analysis, Singular Value Decomposition, Projection Pursuit, Self-Organizing Map, and so on.

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本文讨论了投影追踪方法（PP方法），它是一种稳健而又实用的方法，能够帮助揭露高维观测数据的结构。

The projection pursuit(PP) technique is discussed. It is a robust and practical method, and can help uncover the structure of a set of multivariant observations.

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