Subject:
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Re: Proof of a Hoax? (was: New 9V Digital Trains for Germany this Autumn)
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Newsgroups:
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lugnet.trains
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Date:
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Sat, 1 Apr 2000 02:41:56 GMT
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Viewed:
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4624 times
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Christopher Tracey wrote in message <38E51BAD.B42D5DA9@wamalug.org>...
> Stephen F Roberts wrote:
>
> > ...Chris, u have too much time on ur hands! :-)
>
> maybe, i just tried the same analysis on the two 4 stud track pieces and
> i can't tell if they are the same segment copied twice or not. They are
> two small to get an accurate judgment.
>
> i'm a geek.
I just loaded this picture up into Paintshop Pro and zoomed in. I'm not sure
what kind of effects JPG compression can actually have, but it is
interesting to see that the background immediately around the track and
lettering is not a uniform color, but the rest of the background is. If JPG
compression is the cause (looking at it closer, it must be, the pattern of
non-uniform grey around the track pieces has a very rectangular shape to
it), it is impossible to tell if the two track pieces are the same, if not,
they are not the same image, the studs map to pixels differently.
What may be a better guess is that the bounding box of the upper end ties
for all three track pieces is approximately 87x45 pixes, while the bounding
box of the lower end ties are all about 93x49 (using a somewhat subjective
definition of the bounding box since the JPG compression effects scatter
pixels from the ties another 5-10 pixels or so). Those numbers are kind of
close, but they are also about 10% different, and I would estimate that my
subjective bounding box only has a pixel or two error.
Frank
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