I'm comparing different classification methods (parallelepiped & max likehood) with ENVI 5.0 Classic. I'm supposed to use the same ROI from one image on various images and validate the classification with Kappa Index (Cohen's). How do I use the same ROI on different images? Note that I don't want to transfer the ROI from one image to another. What I need is to use the spectral information collected from ROIs on file A to train my classification methods for image B and C. The same training has to be used to different images. So far, I've tried using ROI Tool > calculate covariance with stats and then the Endmember Collection in order to apply the stats in a different image. I choose one of the methods described above and load my .sta file but the classification returns an entirely black image.
Any hints on how to solve this, or suggestions of a different method?
The images have been through atmospheric correction and cropping only.