Anomaly‐background separation and particle swarm optimization based band selection for hyperspectral anomaly detection

Author:

Shang Xiaodi1ORCID,Duan Yiqi1,Wang Xiaopeng1,Fu Baijia1,Sun Xudong2ORCID

Affiliation:

1. College of Computer Science and Technology Qingdao University Qingdao China

2. School of Information Science and Technology Dalian Maritime University Dalian China

Abstract

AbstractAs one of the dimensionality reduction techniques of hyperspectral image (HSI), band selection (BS) does not change the spectral characteristics and physical meaning of HSIs, which is beneficial to the identification and analysis of surface objects. Recently, many BS methods for target detection have achieved promising results by making full use of the priori spectral features of the target to be detected. Conversely, anomaly detection separates the anomaly based solely on the statistical distribution difference between anomaly and background without any prior information. Therefore, the development of BS for anomaly detection has lagged far behind that of BS for target detection. To this end, this paper proposes a novel BS algorithm dedicated to anomaly detection tasks, named anomaly‐background separation and particle swarm optimization (PSO)‐based BS. Specifically, an anomaly‐background separation framework (ABSF) is established to predetermine a priori knowledge of anomaly distribution. Then, three band prioritization criteria are constructed with the anomaly‐background constraints generated by ABSF. Finally, PSO is used to find the optimal subset of bands in the solution space. The experiments on two real datasets demonstrate that the proposed method yields better detection results and greater stability compared to other BS methods discussed in this paper.

Funder

China Postdoctoral Science Foundation

National Natural Science Foundation of China

Science and Technology Support Plan for Youth Innovation of Colleges and Universities of Shandong Province of China

Publisher

Institution of Engineering and Technology (IET)

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