I'm working on some supervised classifications using scenes from the landsat legacy archive wich include ETM+, TM 5 and OLI data from 2001 to 2014. I have training and validation points for each scene for the different classes I have defined. Because of this, the fact that every scene is different on its own, and that the bands used in each classification vary in spetral resolution from one sensor to the other, I want to apply the spectral signature defined for the OLI scene (because it's the newest and I can actually go and validate it in the field) to the other scenes as well.
I'm working with ENVI 4.8 and 5.1, using the MLC classifier. Is there a tool in ENVI that can "translate" the spectral signature made from the OLI data to the other sensors?