The method may further include performing a Fourier transform on the windowed spectral image data along the λ dimension, {HEAD ~ the Fourier transform} performed at {TAIL ~ locations} along the x dimension and the y dimension Fourier coefficients associated with each of the locations 
performed at
The method may further include performing a Fourier transform on the windowed spectral image data along the λ dimension , { HEAD ~ the Fourier transform } performed at { TAIL ~ locations } along the x dimension and the y dimension Fourier coefficients associated with each of the locations
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH