8 November 2002 Observations on the relationship between eigenvalues, instrument noise, and detection performance
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Proceedings Volume 4816, Imaging Spectrometry VIII; (2002); doi: 10.1117/12.453777
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States
Abstract
Hyperspectral data rarely spans the full band space because of factors such as sensor noise, numerical round-off, sparse sampling, and band correlation introduced by data processing. Standard exploitation of data, which often does not consider the possibility of a reduced band space, leads to reduced detection performance. Spectral signature detection performance can be improved by estimating the covariance on a subset of the band space components. The decision about how to limit the band space can be determined by factors such as in-scene estimation of noise. In-scene estimation of noise can be used to optimize spectral signature detection when spectral filtering methods based on covariance inverses are used. We present here a method for determining instrument noise and a new method of covariance inverse regularization which increases spectral filtering performance.
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Andreas F. Hayden, David R. Twede, "Observations on the relationship between eigenvalues, instrument noise, and detection performance", Proc. SPIE 4816, Imaging Spectrometry VIII, (8 November 2002); doi: 10.1117/12.453777; https://doi.org/10.1117/12.453777
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KEYWORDS
Optical filters

Calibration

Digital filtering

Linear filtering

Matrices

Single mode fibers

Imaging systems

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