The method may further include performing wavelet compression of the filtered data along the x dimension and along {HEAD ~ the y dimension} to generate {TAIL ~ the compressed spectral image} 
The method may further include performing wavelet compression of the filtered data along the x dimension and along { HEAD ~ the y dimension } to generate { TAIL ~ the compressed spectral image }
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 OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL