lar 
Sks 
in 
ely 
ued 
ing 
nd, 
ies 
sed 
ure 
een 
ce. 
ms. 
ich 
eir 
of 
VAX 
—AT 
rol 
ted 
MP. 
ert 
ful 
and 
ral 
ION 
tes 
the 
ave 
vel 
elp 
ork 
ks. 
nu, 
  
Image Analysis Kernel Multispectral Analysis 
Create Database File Create, Edit, Load: Training-site Handling 
Edit Data Descriptors Auxiliary Data Scatterplotting 
Delete Selected Data Colour Maps 2-D Ellipse Plots 
Histogram Draw Graphics Freature Space Exploration 
Histogram Equalize Images Mixel/Outlier Removal 
Histogram match Look-up Tables Signature Create/Alter 
Look-up Table Enhancement Political Maps Cluster Definition 
Contrast Stretch Polygons Clustering ied 
Density-slicing Theme Maps Single-class Classifier 
Image Arithmetic Training Sites Parallelepiped Classifier 
Rotate Image Gaussian Noise Maximum-likelihood Classifier 
Line Replacement Geometric Patterns Non-parametric Classifier 
Mosaicking Polynomial Images Arbitrary Region Subtotals 
Thresholding Alphanumeric Text Channel Ratioing 
Windowing Hotelling Transform 
Merge Polygon Subset Video Control Tablet Principal Components 
Edge Filter Over 90 Display Commands Tasselled-Cap Transform 
Gradient Filter 
Mean Filter Geometric Correction Frequency Transforms 
Median Filter Image/Map Tie-down Fourier Transform 
Mode Filter Image/Image Tie-down Walsh Transform 
Programmable Filter Image/Lat-Long Tie-down Hadamard Transform 
Printout Source Header World Data Bank II Cosine Transform 
Printout Numeric Image 5th Order Polynomials 
Printout Look-up Table Image Resampling 
Tape I/O B/W Hardcopy Colour Hardcopy 
Any Tape Format to/from DB Plot graphics, Plot graphics, 
Any Tape Format to Display images, maps images, maps 
Figure 4: Partial Listing of Tasks in the PACE Image Analysis System 
  
Intelligent Defaulting 
Intelligent defaulting is one of the most important components of 
applications software systems. For every user control variable required to 
run a program, EASI provides defaults via the use of the parameter file. The 
defaults can be changed for any number of users at any time. The user may 
also select any combination of default and interactive inputs. 
Programmability 
With EASI, users have a flexible software system that can adapt to their 
needs through programmability. Users can quickly create procedures that 
control the user environment or application process. Any EASI command can be 
used to create these procedures vithout the need for compilers, linkers or 
other host utilities. 
Application-Independent User Environment 
An application-independent user environment isolates the users from changes 
made to application programs. EASI provides menu management, prompting and 
program execution control independent of applications, making it simple to 
change user dialogue, convert to other natural languages or add nev 
application packages. 
Machine Independence 
Upgrading to a new computer or operating system, or networking with PCs, is 
an important facet in the management of today’s computing resources. With 
EASI/IMP, there is no longer a need for users to relearn how to use an 
application when migrating to a new machine.  EASI operates identically on 
PCs, minis and mainframes, making user retraining unnecessary. 
599