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Spectral reflectance

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View Resource USGS Digital Spectral Library

The USGS Spectroscopy Lab posts, "Researchers at the Spectroscopy Lab have measured the spectral reflectance of hundreds of materials in the lab, and have compiled a spectral library. The library is used as a reference for material identification in remote sensing images." This site is still under construction but it contains detailed plots and sample descriptions (.gif).

https://speclab.cr.usgs.gov/spectral.lib04/spectral-lib04.ht...