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作者:

Wang, Mengdi (Wang, Mengdi.) | Yu, Jing (Yu, Jing.) | Niu, Lijuan (Niu, Lijuan.) | Sun, Weidong (Sun, Weidong.)

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EI Scopus SCIE

摘要:

Hyperspectral images (HSIs) usually contain hundreds of spectral bands. When they are used for classification tasks, HSIs may suffer from the curse of high dimensionality. To address this problem, the essential procedures of dimension reduction and feature extraction (FE) are employed. In this letter, we propose an FE method for HSIs using low-rank representation with neighborhood preserving regularization (LRR_NP). The proposed method can simultaneously employ locally spatial similarity and the spectral space structure, which comprises a union of multiple low-rank subspaces. The framework of LRR can structurally represent the union structure of a spectral space. Because spatial neighbor pixels always share high similarity in a feature space, an NP regularization item is introduced into the framework of LRR to consider the locally spatial correlation. Classification experiments are conducted on real HSI data sets; the results demonstrate that the features that are extracted by LRR_NP are more discriminative than the state-of-art methods, including both unsupervised methods and supervised methods.

关键词:

Feature extraction (FE) hyperspectral image (HSI) low-rank representation (LRR) neighborhood preserving (NP) union structure unsupervised and supervised

作者机构:

  • [ 1 ] [Wang, Mengdi]Tsinghua Univ, Dept Elect Engn, Tsinghua Natl Lab Informat Sci & Technol, State Key Lab Intelligent Technol & Syst, Beijing 100084, Peoples R China
  • [ 2 ] [Sun, Weidong]Tsinghua Univ, Dept Elect Engn, Tsinghua Natl Lab Informat Sci & Technol, State Key Lab Intelligent Technol & Syst, Beijing 100084, Peoples R China
  • [ 3 ] [Yu, Jing]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing 100124, Peoples R China
  • [ 4 ] [Niu, Lijuan]Chinese Acad Med Sci, Canc Hosp, Natl Canc Ctr, Beijing 100021, Peoples R China
  • [ 5 ] [Niu, Lijuan]Peking Union Med Coll, Beijing 100021, Peoples R China

通讯作者信息:

  • [Wang, Mengdi]Tsinghua Univ, Dept Elect Engn, Tsinghua Natl Lab Informat Sci & Technol, State Key Lab Intelligent Technol & Syst, Beijing 100084, Peoples R China

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来源 :

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS

ISSN: 1545-598X

年份: 2017

期: 6

卷: 14

页码: 836-840

4 . 8 0 0

JCR@2022

ESI学科: GEOSCIENCES;

ESI高被引阀值:89

中科院分区:3

被引次数:

WoS核心集被引频次: 10

SCOPUS被引频次: 12

ESI高被引论文在榜: 0 展开所有

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