A probabilistic hyperspectral imagery restoration method

Wei Wei, Jiatao Nie, Chunna Tian

Research output: Contribution to journalArticlepeer-review

Abstract

Hyperspectral image (HSI) restoration is an important task of hyperspectral imagery processing, which aims to improve the performance of the subsequent HSI interpretation and applications. Considering HSI is always influenced by multiple factors-such as Gaussian noise, stripes, dead pixels, etc.-we propose an HSI-oriented probabilistic low-rank restoration method to address this problem. Specifically, we treat the expected clean HSI as a low-rank matrix. We assume the distribution of complex noise obeys a mixture of Gaussian distributions. Then, the HSI restoration problem is casted into solving the clean HSI from its counterpart with complex noise. In addition, considering the rank number need to be assigned manually for existing low-rank based HSI restoration method, we propose to automatically determine the rank number of the low-rank matrix by taking advantage of hyperspectral unmixing. Experimental results demonstrate HSI image can be well restored with the proposed method.

Original languageEnglish
Article number529
JournalApplied Sciences (Switzerland)
Volume9
Issue number12
DOIs
StatePublished - 1 Jun 2019

Keywords

  • Hyperspectral image denoising
  • Hyperspectral imagery
  • Low-rank data analysis
  • Probabilistic model

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