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Proceedings Paper

Dual-window-based anomaly detection for hyperspectral imagery
Author(s): Heesung Kwon; Sandor Z. Der; Nasser M. Nasrabadi
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Paper Abstract

We propose adaptive anomaly detectors that find materials whose spectral characteristics are substantially different from those of the neighboring materials.The target spectral vectors are assumed to have different statistical characteristics from the background vectors. In order to detect anomalies we use a dual rectangular window that separates the local area into two regions-- the inner window region (IWR) and outer window region (OWR). The statistical spectral differences between the IWR and OWR is exploited by generating subspace projection vectors onto which the IWR and OWR vectors are projected. Anomalies are detected if the projection separation between the IWR and OWR vectors is greater than a predefined threshold. Four different methods are used to produce the subspace projection vectors. The four proposed anomaly detectors have been applied to HYDICE (HYperspectral Digital Imagery Collection Experiment)images and the detection performance for each method has been evaluated.

Paper Details

Date Published: 16 September 2003
PDF: 11 pages
Proc. SPIE 5094, Automatic Target Recognition XIII, (16 September 2003); doi: 10.1117/12.486056
Show Author Affiliations
Heesung Kwon, Army Research Lab. (United States)
Sandor Z. Der, Army Research Lab. (United States)
Nasser M. Nasrabadi, Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 5094:
Automatic Target Recognition XIII
Firooz A. Sadjadi, Editor(s)

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