The spectral image may be {HEAD ~ a three dimensional image} that provides {TAIL ~ spectral intensity values} for each of a number of wavelengths at each of a number of positions within a two dimensional image plane 
provides
The spectral image may be { HEAD ~ a three dimensional image } that provides { TAIL ~ spectral intensity values } for each of a number of wavelengths at each of a number of positions within a two dimensional image plane
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH