Tape to Disk Input 
Color Display 
Training 
Statistics 
Feature Extraction 
Classification 
TABLE II 
FUNCTIONS OF CCRS MICA SYSTEM 
CCT's with 5 band MSS data 
radiometric corrections and preprocessing 
if required 
creation of header file so that all user 
actions are recoverable 
any portion of stored image 
magnification and grid overlays 
contrast stretching, density slicing 
- interactive cursor selection of training areas 
print and plot image grey levels in any band 
display and plot grey level histograms 
(spectral signatures) 
maximum of 10 classes at a time 
selection of preprocessing mode (ratioing, 
normalization, etc.) 
determines means, covariance matrices, in 
tensity limits for each class 
display and plot of band correlations and 
class distributions 
- display and plot of modified spectral signa 
tures 
optimal feature extraction using divergence 
measures 
or sequential backward or forward feature 
selection 
- user selection of features for classification 
alteration of class list or statistics of 
a class is possible 
automatically identifies preprocessing feat 
ures, previously selected 
maximum likelihood decision rule applied to 
area to be classified 
- color display of classified results 
creation of CCT for photographic production 
of classified image on EBIR's 
creation of video tape for portable display 
print of themes 
Output