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In remote sensing using a spectrometer, the spectral envelope of a feature is the boundary of its spectral properties, as defined by the range of brightness levels in each of the spectral bands of interest.

References

http://www.unesco.org/csi/pub/source/rs15.htm

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Topics: Spectral Envelope, Spectral Width, Spectral Masking...

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Spectral density	Spectral envelope	Spectral method
Spectral radius	Spectral evidence	Spectral theory
Spectral graph theory	Spectral Bat	Spectral space

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