PAL CARD CATALOG ENTRY

SHORT DESCRIPTION

Ada packages for image processing operations


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ASSET PROFILE

UNIT NAME
IMAGE
VERSION
2.0
REVIEW CODE
C1 1.0 C
INET ADDRESS
librarian@source.asset.com
AUTHOR
Ford Aerospace Corporation
RIGHTS
Approved for public release; distribution unlimited
COPYRIGHT
1988 Ford Aerospace Corporation
DATE CREATED
28 April 1988
DATE RELEASED
08 December 1993
DATE LAST UPDATED
08 December 1993
LOCATION
ASSET
PAL
ENVIRONMENT
Not documented in PAL database
LIMITATIONS
Not documented in PAL database
CERTIFICATION
Ada System Certifier_1 1.0
Date/Time of Processing: Thursday  26 May       1994 01:58:05Pm
Overall Assessment of System: OK
Classification of System: C
Basis of Classification --
Syntax Errors                               PASS
Completeness                                PASS
Independence from External Libraries        FAIL
Independence from a Specific Ada Compiler   FAIL

Explanations for failures --
System withs non-standard library units that are not provided
System contains compiler-specific pragmas or uses Machine_Code

Number of ...
Files              72
Library Units     126
Lines           17338
Statements       5060
Comments         8455

Unidentified Withed Units --
3 unidentified withed units
Subunits and Parent Units --
10 parent program units
0 missing parent units
89 subunits
0 subunits found but not specified
0 subunits specified but not found

FILE LISTING

Directory Display


languages/ada/swcomps/image:
  File Name                 Size
  ---------                 ----
  README                   3,039
  image.zip              379,787


Totals
  ==============  ==============
    2 Files              382,826

ABSTRACT

ASSET_A_224:  Image Processing Packages
     A set of reusable Ada packages which perform image processing
operations, consisting of neighborhood operations, point operations,
histogram operations,  and morphological operations.  They may be used
singularly or in combination. 
     The neighborhood operations package contains algorithms that
perform operations on a digital image by transforming local areas (nxm
pixel windows) over the entire image. The algorithms in this package
perform the following  functions:
           High and Low Pass Filters  
           Edge Filters/Detectors  
           Discrete Convolutions  
     The histogram operations package contains routines that generate
global  image histograms, global image statistics, and enhance images
based on the  image's global statistics.  The routines in this package 
perform the  following functions:                                 
           Histogram Generation  
           Global Image Statistics  
           Image Contrast Enhancement  
     The generic point operations package contains functions that
perform  operations on an image by transforming each individual pixel
element over the  entire image.  The package contains a number of
generic functions that can be  instantiated to perform custom point
operations on 2-D Images and 1-D Look-up  Tables (LUT).  Operations can
be performed on 2-D images as follows:
           Image and Constant - Transform an image by some constant value
           Image and Image - Transform an image by another image
           Image transform - Transform an image by a given function.
Operations can be perform on 1-D LUT's as follows:
           LUT and Constant - Transform an LUT by some constant value
           LUT transform - Transform an LUT by a given function.
    Morphological image processing operators modify the spatial and
structural  form of binary or grey scale images. The operators have uses
in the study of  object outlines, shape analysis, and pattern
recognition.  This package  contains a set of binary morphological image
processing operators.  These  operators are applied to two dimensional
binary images (an image where each  pixel element can have only two user
selected values; referred to in this  package as the ON or OFF value),
performing either an ADDITIVE (turning a pixel ON), or SUBTRACTIVE
(turning a pixel OFF) operation.  The package contains four ADDITIVE
morphological operators:
           - Interior Fill 
           - Dilate 
           - Fatten 
           - Bridge
and nine SUBTRACTIVE operators:
           - Isolated Pixel Remove    - Dot Remove 
           - Spur Remove              - Interior Pixel Remove 
           - Break                    - Erode 
           - Shrink                   - Thin 
           - Skeletonize 
hierarchical morphological operators:
           - Open  
           - Close  
           - Delineate
These operators perform combinations of the previously listed ADDITIVE
or  SUBTRACTIVE operators to complete their desired operation.


REVISION HISTORY

28 April 1988     Ford Aerospace Corp   Initial release to ASSET
08 December 1993  ASSET                 Initial release to the PAL


RELEASE NOTICE

This prologue must be included in all copies of this software.
Restrictions on use or distribution:  NONE


DISCLAIMER

	This software and its documentation are provided "AS IS" and
without any expressed or implied warranties whatsoever.  No warranties
as to performance, merchantability, or fitness for a particular
purpose exist.
	The user is advised to test the software thoroughly before
relying on it.  The user must assume the entire risk and liability of
using this software.  In no event shall any person or organization of
people be held responsible for any direct, indirect, consequential or
inconsequential damages or lost profits.