Verification of statistical properties for hyperspectral images: Heteroscedasticity and non-stationarity

Research output: Contribution to conferencePaperpeer-review

Abstract

This paper investigates the heteroscedasticity and non-stationarity, two statistical properties, of hyperspectral remote sensing data. In the field of mathematical sciences, a collection of variables is heteroscedastic if there are sub-populations that have different variances or volatilities than others, while a non-stationary process refers to a stochastic process whose joint probability distribution are changing when shifted in time or space. To be treat as sequences, hyperspectral data are investigated via Bartlett Test and Wald-Wolfowitz Runs Test to verify the heteroscedasticity and non-stationarity, respectively. Most experimental results fail to pass Bartlett Test and Wald-Wolfowitz Runs Rest statistically significant, indicating that both heteroscedasticity and non-stationarity are intrinsic properties of spectral response sequence.

Original languageEnglish
Pages191-195
Number of pages5
StatePublished - 2013
Event3rd International Conference on Digital Information Processing and Communications, ICDIPC 2013 - Dubai, United Arab Emirates
Duration: 30 Jan 20131 Feb 2013

Conference

Conference3rd International Conference on Digital Information Processing and Communications, ICDIPC 2013
Country/TerritoryUnited Arab Emirates
CityDubai
Period30/01/131/02/13

Keywords

  • Heteroscedasticity
  • Hyperspectral data
  • Non-stationarity
  • P-value
  • Spectral response sequence

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