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Proceedings Paper

A decision-level fusion scheme using the support vector data description for target detection in hyperspectral imagery
Author(s): Wesam A. Sakla; Adel A. Sakla; Andrew Chan; Jim Ji
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Paper Abstract

Spectral variability remains a challenging problem for target detection in hyperspectral (HS) imagery. In previous work, we developed a target detection scheme using the kernel-based support vector data description (SVDD). We constructed a first-order Markov-based Gaussian model to generate samples to describe the spectral variability of the target class. However, the Gaussian-generated samples also require selection of the variance parameter σ 2 that dictates the level of variability in the generated target class signatures. In this work, we have investigated the use of decision-level fusion techniques for alleviating the problem of choosing a proper value of σ 2 . We have trained a collection of SVDDs with unique variance parameters σ 2 for each of the target training sets and have investigated their combination using the traditional AND, OR, and majority vote (MV) decision-level rules. We have inserted target signatures into an urban HS scene with differing levels of spectral variability to explore the performance of the proposed scheme in these scenarios. Experiments show that the MV fusion rule is the best choice, providing relatively low false positive rates (FPR) while yielding high true positive rates (TPR). Detection results show that the proposed SVDD-based decision-level scheme using the MV fusion rule is highly accurate and yields higher true positive rates (TPR) and lower false positive rates (FPR) than the adaptive matched filter (AMF).

Paper Details

Date Published: 12 May 2010
PDF: 9 pages
Proc. SPIE 7696, Automatic Target Recognition XX; Acquisition, Tracking, Pointing, and Laser Systems Technologies XXIV; and Optical Pattern Recognition XXI, 76960Y (12 May 2010); doi: 10.1117/12.849936
Show Author Affiliations
Wesam A. Sakla, Texas A&M Univ. (United States)
Adel A. Sakla, Univ. of South Alabama (United States)
Andrew Chan, Texas A&M Univ. (United States)
Jim Ji, Texas A&M Univ. (United States)


Published in SPIE Proceedings Vol. 7696:
Automatic Target Recognition XX; Acquisition, Tracking, Pointing, and Laser Systems Technologies XXIV; and Optical Pattern Recognition XXI
Firooz A. Sadjadi; David P. Casasent; Steven L. Chodos; Abhijit Mahalanobis; William E. Thompson; Tien-Hsin Chao, Editor(s)

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