The results show that the majority of pure surface materials could be identified using LUISA-A. Unknown spectra are composed of mixed pixels and real pure surface materials which could be distinguished by LUISA-T.
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Marianne Jilge, Uta Heiden, Martin Habermeyer, André Mende, Carsten Juergens, "Identifying pure urban image spectra using a learning urban image spectral archive (LUISA)," Proc. SPIE 10008, Remote Sensing Technologies and Applications in Urban Environments, 100080J (26 October 2016);