Preliminary validation of a method for simulating hyperspectral bands from multispectral images

This paper presents a validation of a recently developed method for simulating new spectral bands from multispectral images. We use the method to simulate CHRIS/PROBA bands from a Landsat ETM+ image. Next we validate the simulated bands by RMSE, band-band scatter plots and visual comparison with original CHRIS bands acquired 4 days before the ETM+ image. Finally, we calculate NDVI from the original and simulated CHRIS bands and from the ETM+ bands. Result show that the simulated CHRIS NDVI in the dominant vegetation types in the study area is more correlated to the original CHRIS NDVI, than ETM+ NDVI. For not dominant vegetation types, not included into the simulation process, the correlation is lower for simulated CHRIS NDVI than for ETM+ NDVI.