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Iterated function system in POV
This is a little different from true IFS in that an object is added to
the image
Consequently the none of the start image is present here
The first image is a non-tileable version output by POV after about 20
frames
& the second is a tileable version made by the GIMP using the Make
seamless command
I also tried something similar with height_fields but the result was not
nice at all.
--
Bye
Pabs
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Attachments:
Download 'ifs.jpg' (76 KB)
Download 'seamless.jpg' (74 KB)
Preview of image 'ifs.jpg'
Preview of image 'seamless.jpg'
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Just as a test, I made this tileable version with the Resynthetize
plugin of the Gimp...
--
* Abandon the search for truth, * mailto:ber### [at] iname com
* Settle for a good fantasy. * http://www.enst.fr/~jberger
*********************************
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Attachments:
Download 'ifs.jpg' (19 KB)
Preview of image 'ifs.jpg'
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Pabs wrote:
> Iterated function system in POV
> This is a little different from true IFS in that an object is added to
> the image
> Consequently the none of the start image is present here
Okay, way beyond my knowledge!
These are sweet pics!
--
David Fontaine <dav### [at] faricynet> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
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David Fontaine wrote:
> Okay, way beyond my knowledge!
Simple
1 Start with any old image
2 Image map it onto a plane
3 Place the camera looking straight at the plane
4 Place a couple of objects in the camera's fov (in my case 2
semi-transparent spheres with the image bump mapped & one with it image
mapped )
5 Render
6 Rinse, Lather, Repeat.
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Pabs wrote:
> Simple
> 1 Start with any old image
> 2 Image map it onto a plane
> 3 Place the camera looking straight at the plane
> 4 Place a couple of objects in the camera's fov (in my case 2
> semi-transparent spheres with the image bump mapped & one with it image
> mapped )
> 5 Render
> 6 Rinse, Lather, Repeat.
So keep doing this process on the output - but how do you get that
complexity? Outside of the transparent spheres it'd all be the same each
time...
--
David Fontaine <dav### [at] faricynet> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
"The derivative of sin(2x) is cos(2x)" -Matt Giwer
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David Fontaine wrote:
> So keep doing this process on the output
Yep
> - but how do you get that complexity?
Same way as the seirpinski triangle (I think that is how it is spelt)
or the menger sponge (Idea-idea-idea - media-media-media-df3-MegaPOV)
Think of it this way:
you start with an image, scale it down a little & rotate it a bit, mapping
onto a plane such that the camera is looking at the seam corner then paint a
transparent sphere on it & do the same to that image, resulting in each image
having one more sphere than before plus the amount added by viewing
overlapping images & if the scaling is below 0.5 relative to the camera fov
soon (10 frames) there are millions of spheres
> Outside of the transparent spheres it'd all be the same each time...
Unless you do one of the following (I did all 3)
1. you don't use "once" in the image_map{}
2. make sure that the camera overlaps two of the repeated images
3. transform (eg rotate) the image relative to the camera
BTW I can post the src if wanted
--
Bye
Pabs
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Pabs wrote:
> > - but how do you get that complexity?
[snip]
Ah, you tranform it each time. That makes more sense :)
--
David Fontaine <dav### [at] faricynet> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
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Pabs wrote:
<much snippage>
>Think of it this way: you start with an image, scale it down a little
>& rotate it a bit, mapping onto a plane such that the camera is
>looking at the seam corner then paint a transparent sphere on it &
>do the same to that image, resulting in each image having one more
>sphere than before plus the amount added by viewing
>overlapping images & if the scaling is below 0.5 relative to the camera fov
>soon (10 frames) there are millions of spheres
>> Outside of the transparent spheres it'd all be the same each time...
>Unless you do one of the following (I did all 3)
>1. you don't use "once" in the image_map{}
>2. make sure that the camera overlaps two of the repeated images
>3. transform (eg rotate) the image relative to the camera
>BTW I can post the src if wanted
>--
>Bye
>Pabs
Could you post the source please? I was playing with your
idea (or playing with what I *thought* you were saying) and
did not get results that were that interesting.
Pete
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Pete wrote:
> Could you post the source please? I was playing with your
> idea (or playing with what I *thought* you were saying) and
> did not get results that were that interesting.
I'll post it tomorrow in p.t.s-f
--
Bye
Pabs
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Pabs wrote:
>I'll post it tomorrow in p.t.s-f
>--
>Bye
>Pabs
Thanks!
Pete
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