Impact of missing endmembers on the performance of the OSP detector for hyperspectral images

Peter Bajorski

doi:10.1117/12.720101

14 May 2007 Impact of missing endmembers on the performance of the OSP detector for hyperspectral images

Peter Bajorski

Proceedings Volume 6565, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIII; 656524 (2007) https://doi.org/10.1117/12.720101
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

In evaluating the performance of the detectors such as the orthogonal subspace projection (OSP) detector, it is often assumed that the model under which the detector is constructed is the correct model. However, in practice, the ability to identify all background endmembers might be limited. Consequently, the OSP detector would use only a subset of all background endmembers. This clearly creates sub-optimality of such a detector. In this paper, we perform analytical calculations that allow us to assess how much of the detection power is lost due to the unidentified background endmembers. An analytical comparison is made between two OSP detectors-one using only the identified endmembers and the other one using even a smaller set of endmembers (in order to simulate the situation when only the smaller set of endmembers is identified).

Citation Download Citation

Peter Bajorski "Impact of missing endmembers on the performance of the OSP detector for hyperspectral images", Proc. SPIE 6565, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIII, 656524 (14 May 2007); https://doi.org/10.1117/12.720101

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