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Amiga Plus Special 4
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Amiga Plus Sonderheft 1996 #4.iso
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batcomp.readme
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1992-10-05
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An Almost Fair Side-By-Side Comparison
Bob Fisher, who (if my information is correct) has had the opportunity to
work a great deal with GVP's morphing product, posted a morph animation
changing TV's Batman to the Batman seen in recent movies.
I thought that this might be a nice way to compare the results of GVP's
program, and ASDG's MorphPlus in a neutral and hopefully objective manner.
I've made two assumptions which I will clearly point out - If either of
these assumptions are incorrect, I apologize in advance. As I said, as far
as I can surmise, this is an almost fair comparison. Certainly it was
intended to be as fair as I could make it.
My first assumption is that if my understanding is correct, Mr. Fisher
could be considered an expert user of GVP's product and one might also
assume that the results in his animation are representative of the results
one might reasonably expect from GVP's product.
I also assume that Mr. Fisher had a higher resolution 256 gray or 24 bit
color original to work from. This is why I call this an ``almost fair''
comparison since I did not have the original artwork to work from in
producing the MorphPlus version of the morph.
Instead I used the first and last 16 color (already dithered and reduced in
size) frames from Mr. Fisher's animation. If my second assumption is
correct, the source material Mr. Fisher worked from would be *much* higher
quality that the material I worked from.
Given these two assumptions, I'll explain the construction of the
accompanying anim file.
First, using the first and last 16 color frames from Mr. Fisher's
animation, I produced a 20 frame morph from one Batman to the other. I did
not make use of any of MorphPlus's advanced motion features, and instead
used the same plain vanilla linear motion at Mr. Fisher had used.
I used a purely linear dissolve between one Batman and the other except for
the region inside the Bat emblem on the chests of each Batpersons. In this
region, I used MorphPlus's regional dissolve to clearly show the fineness
of the small bat's transition.
From what I can tell, Mr. Fisher used a non-linear dissolve in his morph
to produce a quick change from one Batman to the other. As a result, for
example, the GVP Batperson's chest will change to full black more quickly
than ours. A quick dissolve is often used for artistic reasons, or to hide
defects in a morph.
Next, I loaded each frame of Mr. Fisher's morph into the left side of a
double sized backdrop (640 by 400 - the morphs are 320 by 200). This was
performed without any modification of Mr. Fisher's data.
I loaded the corresponding frame of our morph into the right half of each
backdrop. Again, with no additional processing.
These 640 by 400 frames were then appended to an anim file, these results
you see here.
Things To Look For
I would hope that the differences between the two morphs will be readily
seen. But, I will point out some of the differences that I see.
1. There is a lengthy double image in the bat emblem in the GVP morph.
The emblem in the MorphPlus version is always clean. I give you my word
that this is not an artifact of the regional dissolve technique I employed.
2. There is a double image in the left (viewer's left) eye of the Batmen.
Also, a double image along the bottom of mask - near the nose line. And
more, a double image at the mouth.
3. Further, compare the smoothness of motion between the two morphs.
Specifically look at the mouth and bottom edge of the mask. Also, note the
wavy motion in the progress of the bat emblem in the GVP version.
4. Note the way the pointy fringes on the movie Batman's cape grow in, in
the MorphPlus version rather than dissolve in (in the case of the GVP
version).
In Closing
Anyway, I know that no matter how hard I may try to be objective, there
will be those who will flame me for faults, real or imagined. If the
faults are real, I apologize and I would hope that someone will quickly
point these out to me in a constructive manner.
If the faults are imagined, well, forgive me if I don't respond.
Perry Kivolowitz
ASDG Incorporated