Global Self-Labeled Distribution Analysis for Hyperspectral Band Selection

Abstract

A global self-labeled distribution analysis (GSLDA) for hyperspectral image (HSI) band selection is proposed in this paper, which focuses on an unsupervised method to ascertain the band discrimination. In order to generate the band labels for further analysis, the concept of the local minimum spanning forest (LMSF) is introduced into the construction of the global self-labeled band partitions based on graph theory. Meanwhile, the novel scoring strategy of triple-density indexes is applied to analyze the labeled-band distribution for determining the selected band subset with clear discrimination. The feasibility of the proposed method is evaluated on real hyperspectral data and the experiment results show a competitive good performance, which demonstrates that the selected bands hold apparent global discrimination and robust noise immunity.