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Remote Sens. 2015, 7(6), 6611-6634; doi:10.3390/rs70606611

Adjusted Spectral Matched Filter for Target Detection in Hyperspectral Imagery

1
Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China
2
School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
3
Department of Electrical and Computer Engineering, Mississippi State University, Starkville, MS 39762, USA
*
Author to whom correspondence should be addressed.
Academic Editors: George P. Petropoulos and Prasad S. Thenkabail
Received: 25 November 2014 / Revised: 29 April 2015 / Accepted: 8 May 2015 / Published: 26 May 2015

Abstract

Supervised target detection and anomaly detection are widely used in various applications, depending upon the availability of target spectral signature. Basically, they are based on a similar linear process, which makes them highly correlated. In this paper, we propose a novel adjusted spectral matched filter (ASMF) for hyperspectral target detection, which aims to effectively improve target detection performance with anomaly detection output. Specifically, a typical case is presented by using the Reed-Xiaoli (RX) anomaly detector to adjust the output of supervised constrained energy minimization (CEM) detector. The adjustment is appropriately controlled by a weighting parameter in different detection scenarios. Experiments were implemented by using both synthetic and real hyperspectral datasets. Compared to the traditional single detection method (e.g., CEM), the experimental results demonstrate that the proposed ASMF can effectively improve its performance by utilizing the result from an anomaly detector (e.g., RX), particularly in situations with a complex background or strong anomalies. View Full-Text
Keywords: hyperspectral imagery; adjusted spectral matched filter; constrained energy minimization (CEM); Reed-Xiaoli detector (RXD); receiver operating characteristics (ROC) hyperspectral imagery; adjusted spectral matched filter; constrained energy minimization (CEM); Reed-Xiaoli detector (RXD); receiver operating characteristics (ROC)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Gao, L.; Yang, B.; Du, Q.; Zhang, B. Adjusted Spectral Matched Filter for Target Detection in Hyperspectral Imagery. Remote Sens. 2015, 7, 6611-6634.

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