Multi-features manifold discriminant embedding for hyperspectral image classification

Hong HUANG; Zheng-ying LI; Guang-yao SHI; Yin-song PAN

doi:10.3788/OPE.20192703.0726

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Multi-features manifold discriminant embedding for hyperspectral image classification

Information Sciences | 更新时间：2020-08-13

- Multi-features manifold discriminant embedding for hyperspectral image classification
- Optics and Precision Engineering Vol. 27, Issue 3, Pages: 726-738(2019)
- 作者机构：
  
  重庆大学光电技术与系统教育部重点实验室，重庆 400044
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20192703.0726
  CLC： TP394.1;TH691.9
- Received：14 September 2018，
  
  Accepted：16 November 2018，
  
  Published：15 March 2019
- 稿件说明：
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Hong HUANG, Zheng-ying LI, Guang-yao SHI, et al. Multi-features manifold discriminant embedding for hyperspectral image classification[J]. Optics and precision engineering, 2019, 27(3): 726-738.
DOI：

Hong HUANG, Zheng-ying LI, Guang-yao SHI, et al. Multi-features manifold discriminant embedding for hyperspectral image classification[J]. Optics and precision engineering, 2019, 27(3): 726-738. DOI： 10.3788/OPE.20192703.0726.

摘要

鉴于传统维数约减方法对高光谱遥感影像进行降维时，往往只利用了单一的光谱特征，限制了分类性能的提升。提出一种基于多特征流形鉴别嵌入的维数约减方法，该方法首先提取高光谱数据的LBP(Local Binary Patterns)纹理特征，然后利用样本点的光谱-LBP特征联合距离及类别信息构建类内图和类间图以发现高光谱影像中的鉴别流形结构，在低维嵌入空间中不仅保持来自同一像素的光谱和纹理特征的相似性，而且使同类点尽可能紧致、不同类点远离，实现空-谱联合低维鉴别特征提取，以有效提高地物分类性能。在Indian Pines和黑河高光谱遥感数据集上的实验表明，本文算法的分类精度在不同实验条件下均优于传统的维数约减方法，其分类精度可达95.05%和96.20%，在较少训练样本条件下优势更为明显，有利于实际应用。

Abstract

The traditional Dimensionality Reduction (DR) methods consider the spectral features but ignores useful spatial information in HSI. To overcome this problem

this paper proposed a new dimensionality reduction method called Multi-Feature Manifold Discriminant Embedding (MFDE). First

the MFDE method extracted the features of the local binary pattern from HSI data. Next

the with-class and between-class graphs were constructed using sample labels to exploit the local manifold structure. Then

an optimal object function was designed to learn the combined spatial-spectral features by compacting the intra-class samples and simultaneously separating the inter-class samples. Thus

the discriminative ability of embedding features was improved. Experimental results in the Indian Pines and Heihe hyperspectral data sets show that the proposed MFDE method performs better than some state-of-the-art DR methods in most cases and achieves an overall classification accuracy of 95.05% and 96.20%

respectively. Its advantage is more significant for less training samples

making it more conducive to practical applications.

关键词

Keywords

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