Wavelet compression is performed on the filtered data along {HEAD ~ the x dimension} and the y dimension to generate {TAIL ~ the compressed spectral image} 
Wavelet compression is performed on the filtered data along { HEAD ~ the x dimension } and the y dimension to generate { TAIL ~ the compressed spectral image }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL