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In biological spectral microscopy, the standard in the field is to use normalized endmembers in linear unmixing algorithms. In most cases, the endmembers are normalized to the maximum value. I have not found a reference that explains why endmembers are normalized prior to linear unmixing. By normalizing, are we not removing information about relative intensity of objects?

I am asking my question here because I am curious if endmember normalization is routine in remote sensing as well.

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    This question does not appear to be about geographic information systems within the scope defined in the help center. – Vince Jun 23 '15 at 16:32
  • You could consult statisticians which work in biology related disciplines. – Nikos Alexandris Sep 18 '15 at 19:27

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