论文标题
高光谱数据的空间光谱歧管嵌入
Spatial-Spectral Manifold Embedding of Hyperspectral Data
论文作者
论文摘要
近年来,高光谱成像,也称为成像光谱,对地球科学和遥感社区的兴趣越来越多。高光谱图像的特征是非常丰富的光谱信息,这使我们能够更容易地识别出在地球表面上的材料。但是,我们必须承认,高频谱维度不可避免地会带来一些缺点,例如昂贵的数据存储和传输,信息冗余等。因此,以有效地降低光谱维度,并在本文中学习更多的差异性频谱嵌入,在本文中,我们提出了一种新颖的散发性,以同时考虑spate spate spatials,并称呼为spate spat,spate spatial spatial spat, (SSME)。除了像素的光谱嵌入方法外,SSME还以基于贴片的方式共同对空间和光谱信息进行建模。 SSME不仅通过使用光谱特征之间的相似性测量获得的邻接矩阵来学习光谱嵌入,而且还通过在高光谱场景中的目标像素的空间邻居进行建模,通过在学习嵌入过程中共享相同的权重(或边缘)。探索分类是一种潜在的策略,以定量评估学习嵌入表示的表现的性能。分类被探讨为定量评估这些高光谱嵌入算法的性能的潜在应用。与几种最新的嵌入方法相比,在广泛使用的高光谱数据集上进行的广泛实验证明了所提出的SSME的优势和有效性。
In recent years, hyperspectral imaging, also known as imaging spectroscopy, has been paid an increasing interest in geoscience and remote sensing community. Hyperspectral imagery is characterized by very rich spectral information, which enables us to recognize the materials of interest lying on the surface of the Earth more easier. We have to admit, however, that high spectral dimension inevitably brings some drawbacks, such as expensive data storage and transmission, information redundancy, etc. Therefore, to reduce the spectral dimensionality effectively and learn more discriminative spectral low-dimensional embedding, in this paper we propose a novel hyperspectral embedding approach by simultaneously considering spatial and spectral information, called spatial-spectral manifold embedding (SSME). Beyond the pixel-wise spectral embedding approaches, SSME models the spatial and spectral information jointly in a patch-based fashion. SSME not only learns the spectral embedding by using the adjacency matrix obtained by similarity measurement between spectral signatures, but also models the spatial neighbours of a target pixel in hyperspectral scene by sharing the same weights (or edges) in the process of learning embedding. Classification is explored as a potential strategy to quantitatively evaluate the performance of learned embedding representations. Classification is explored as a potential application for quantitatively evaluating the performance of these hyperspectral embedding algorithms. Extensive experiments conducted on the widely-used hyperspectral datasets demonstrate the superiority and effectiveness of the proposed SSME as compared to several state-of-the-art embedding methods.