563 
IMAGING SPECTROMETERY ANALYSIS PACKAGE 
BLOCK DIAGRAM 
INTERACTIVE MODE 
VDRC(draw rectangle) 
AVG (average over pixel window) 
CAL (calibarate digital numbers) 
MASK(mask data) 
RPARMS(refledactance ratios) 
BATCH MODE 
GPR 
\ 
subroutines 
spectral.spatial 
read pixels 
flispec.esi.spline 
calibrate pixel 
windows.mask data 
mask data 
rvalue 
calculate ratios 
rededge.dvalue 
rededge analysis 
save results 
Figure 1. Software block diagram. Interactive and batch programmes 
share a common library of subroutines. New modules can easily be 
added. 
Figure 2. Spectral and spatial FLI imagery displayed on Sun 3/60 
workstation using EASI/PACE and the Imaging Spectrometer Analysis 
Package. Spectral curves and vegetation rededge results are plotted on 
a graphics window.