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1995-12-30
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IFF - FX 1.1 AGA
================
- A Progam to perform several effects on IFF/ILBM - Pictures
on an Amiga with AGA - Chipset.
- Vastly improved from V 1.0 !!!! (Actually rewrote most of the code)
- NEW Effects added, others thrown out (the tedious ones)
IFF_FX is Freeware. (Freely Distributable)
This archive should contain:
IFF_FX ;The Program
IFF_FX_AGA_doc ;English documentation
IFF_FX_AGA_dok ;Deutsche Anleitung
------------------------------------------------------------------------
Versions:
1.0 18 Jan 1995 - First Version.
1.1 4 Jun 1995 - Major Bugfix, New Features, Vast Improvements
of existing features; Many effects now in full
glorious color !!!
The Program should not crash anymore, all known
bugs were removed. (and there were many :-( )
------------------------------------------------------------------------
IFF_FX is Copyright ⌐ 1995 Ralf Treuherz. All Rights reserved.
The author will take no responsibility for any damage which results
in improper use of this program.
------------------------------------------------------------------------
Description
-----------
Based on a source picture the program will perform some mathematical
operations like the detections of edges and will save the result as
an IFF/ILBM picture.
------------------------------------------------------------------------
Requirements
- An Amiga 1200 or 4000
(sorry, but the algorithms needed 256 steps of grey!)
- reqtools.library
------------------------------------------------------------------------
How to start IFF_FX
-------------------
IFF_FX can be called either from Workbench or CLI.
* Usage from Workbench
Double-click the Icon. The rest should be quite intuitive:
Select a Source-Picture (SourcePic) and a Destination-
Picture (DestPic), choose an effect, and press "Process" !
* Usage from CLI
IFF_FX <SourcePic> <DestPic> [Effect]
<SourcePic> and <DestPic> are filenames of Pictures and [Effect]
is an optional Number 0-8 for an effect (see below)
------------------------------------------------------------------------
The Effects
-----------
If both a Source- and Destination-Picture is chosen, the Program
will compute the Destination-Picture from the Source-Picture
with the following Effects:
a) Effect: none or 0 / Button: Grey
NEW: Now is a real Greyscale representation according to the
reception of colors to the human eye (the simple (r+g+b)/3 gives
not the correct result). This effect is also used as a precomputing
for Effects 1 - 3.
The Result is a Greyscale - Representation of the Source.
The number of Bitplanes is not changed.
b) Effect: 1 / Button: Amplitude
The Result is a Picture containing the Quality of the Edges
in the SourcePic using the Sobel-Operator. Edges which sourround
an Object in the SourcePic will result in a closed line in the DestPic.
c) Effect: 2 / Button: Phase
The Result is a Picture which contains the Direction of
the Edges. Perhaps of little use to pictures with very
high detail.
d) Effect: 3 / Button: Outline
The Result is a Picture that looks like a Relief. Especially
useful for Workbench-Backgrounds if you convert the resulting
256-Greys - Picture to fewer colors using the appropriate program.
e) Effect: 4 / Button: Smooth
NEW: This effect now results in a color picture !
The Source - Picture is smoothed with a 3*3 Grid, (Low - Pass)
the colormap is not altered.
f) Effect: 5 / Button: Median
NEW EFFECT ! Mostly comparable to "Smooth", but gives better results
with pictures that are distorted with black/white - Noise (extreme
spikes), is a bit slower than "Smooth" because of the involved sorting-
algorithm.
g) Effect: 6 / Button: Sharpen
NEW EFFECT ! Actually, "Smooth" in Reverse, doing a Highpass.
h) Effect: 7 / Button: Halve
NEW EFFECT ! This proves to be very useful in conjunction with other
memory-eating-high-tech-24-Bit-Products like 'Art Department Pro'.
Halves the vertical and horizontal size, adapts the screenmode
accordingly.
i) Effect: 8 / Button: Invert
This Effect inverts the Colormap and will not change the
number of Colors in the Picture.
------------------------------------------------------------------
The Author
----------
Ralf Treuherz
gl176@appl1.hrz.uni-siegen.de
Please send any comments about this Program to this E-Mail address.