International Archives of Photogrammetry and Remote Sensing, Vol. 32, Part 7-4-3 W6, Valladolid, Spain, 3-4 June, 1999 
174 
SNR (dB) 
(a) 
Information parameters (b/pel) 
(b) 
Fig. 9. (a) SNR (dB) and (b) information parameters (b/pel) 
measured for bands 12 to 41 from the test AVIRIS 
Cuprite Mine ’89 image. h u is the entropy of the esti 
mated observation noise, h s is the estimated entropy of 
the noise-free multi-spectral image, r is the code rate. 
ACKNOWLEDGEMENT 
This research was carried out under the financial support of the 
Italian Space Agency (ASI). 
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