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http://seriss.com/people/erco/2001/
Slit-scan photography, eh?
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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Orchid XP v8 wrote:
> Slit-scan photography, eh?
What *I* can't figure out is how the hell they did this:
http://www.youtube.com/watch?v=nIS3jhIncj0
The colours appear to be a simple overlay, but how the hell did they
produce those complex patterns?
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Am 10.06.2010 16:13, schrieb Invisible:
> http://www.youtube.com/watch?v=nIS3jhIncj0
>
> The colours appear to be a simple overlay, but how the hell did they
> produce those complex patterns?
Complex? Looks like a simple video feedback effect to me: You aim the
camera at a monitor showing the camera's image. Depending on how you
tilt and/or zoom the camera, you'll get this type of spiraling stuff,
once you've "initialized" this feedback loop with some initial image.
Add some vibration (well, you don't normally need to add this, it's
probably there anyway), and you get slight variations in the effect. Add
some automatic brightness adjustment, and you'll get some rhythmic
pulsing. Mix in some other signal to get more control over the
"evolution" of the patterns, and/or to fade the effect.
It's kind of like the video version of those synthesizers that were all
the rage at about the same time.
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>> The colours appear to be a simple overlay, but how the hell did they
>> produce those complex patterns?
>
> Complex? Looks like a simple video feedback effect to me:
Wikipedia also claims that it's video feedback. However, it is beyond my
powers of comprehension how you'd make patterns like this with video
feedback.
Video feedback produces trivial zooms or spirals. For example, the part
where Pertwee's face materialises - *that* looks like video feedback,
which its simple linear patterns. But the intricate evolving spirals?
The patterns that flow upwards or downards across the screen? The
bubbling effect? No idea.
Similarly, look at the earler BW one:
http://www.youtube.com/watch?v=bKg9tuSbXmk
How on earth did they get those complex organic patterns? Doesn't look
like any kind of linear feedback I know of. (Actually looks more like a
reaction/diffusion system, but that's impossible without a computer.)
> It's kind of like the video version of those synthesizers that were all
> the rage at about the same time.
Hell, when this was made, they didn't even *have* synthesizers! Not
commercial ones, anyway. All the sounds were made by a guy with a room
full of oscilators, tape machines and other equipment. It's kind of
amazing that the resulting sound is so fluid and organic; apparently it
took many, many hours to produce...
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Invisible wrote:
> How on earth did they get those complex organic patterns?
Looks like they hung up a sheet and blew air over it.
> reaction/diffusion system, but that's impossible without a computer.)
I want to know how they got *this* effect. It looks impossible without
massive computer processing:
http://www.youtube.com/watch?v=tqt5owjb7-w
--
Darren New, San Diego CA, USA (PST)
Eiffel - The language that lets you specify exactly
that the code does what you think it does, even if
it doesn't do what you wanted.
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>> How on earth did they get those complex organic patterns?
>
> Looks like they hung up a sheet and blew air over it.
Wuh?
>> reaction/diffusion system, but that's impossible without a computer.)
>
> I want to know how they got *this* effect. It looks impossible without
> massive computer processing:
>
> http://www.youtube.com/watch?v=tqt5owjb7-w
It would. But, since it also just happens to correspond to a physical
phenominon which can (with extensive equipment) be filmed, it's actually
quite easy.
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Invisible wrote:
>>> How on earth did they get those complex organic patterns?
>>
>> Looks like they hung up a sheet and blew air over it.
>
> Wuh?
Watch it again, and imagine a high-contrast video of a (say) silk bedsheet
hanging from the corners with a fan blowing on it hard enough to make it
lift and ripple.
--
Darren New, San Diego CA, USA (PST)
Eiffel - The language that lets you specify exactly
that the code does what you think it does, even if
it doesn't do what you wanted.
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Darren New wrote:
> Watch it again, and imagine a high-contrast video of a (say) silk
> bedsheet hanging from the corners with a fan blowing on it hard enough
> to make it lift and ripple.
Uh, yeah, looks like it. :-P
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Preview of image 'image1.png'
Preview of image 'image2.png'
Preview of image 'image3.png'
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On Mon, 14 Jun 2010 09:45:05 +0100, Invisible wrote:
> Uh, yeah, looks like it. :-P
The last image looks a lot like the original Doctor Who opening sequence
(come to that, the first one does a little as well).
Jim
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Jim Henderson wrote:
> The last image looks a lot like the original Doctor Who opening sequence
> (come to that, the first one does a little as well).
*facepalm*
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