We present a new and effective approach for Hyperspectral Image (HSI) classification and clutter detection, overcoming a few long-standing challenges presented by HSI data characteristics. Residing in a high-dimensional spectral attribute space, HSI data samples are known to be strongly correlated in their spectral signatures, exhibit nonlinear structure due to several physical laws, and contain uncertainty and noise from multiple sources. In the presented approach, we generate an adaptive, structurally enriched representation environment, and employ the locally linear embedding (LLE) in it. There are two structure layers external to LLE. One is feature space embedding: the HSI data attributes are embedded into a discriminatory feature space where spatio-spectral coherence and distinctive structures are distilled and exploited to mitigate various difficulties encountered in the native hyperspectral attribute space. The other structure layer encloses the ranges of algorithmic parameters for LLE and feature embedding, and supports a multiplexing and integrating scheme for contending with multi-source uncertainty. Experiments on two commonly used HSI datasets with a small number of learning samples have rendered remarkably high-accuracy classification results, as well as distinctive maps of detected clutter regions.

利用本文提出的新型方法进行高光谱图像分类与杂波检测，采用了局部线性嵌入（LLE）和结构丰富的表示环境。在两个外部结构层的帮助下，通过特征空间嵌入和参数范围调整，有效克服了高光谱数据本身的不确定性和噪声问题。实验结果表明，该方法可以在样本数量较少的情况下，获得显着的高精度分类结果，以及检测出杂波区域的特征图。

基于多重结构嵌入和降维的高光谱图像分类和杂波检测