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From: Tor Olav Kristensen
Subject: The Superellipsoidal Brain
Date: 15 Jan 2019 17:10:07
Message: <web.5c3e1168d8b92d66a09309da0@news.povray.org>
Here's an image I made a while ago.

I got the data for the brain from Paul Bourke's file mri.df3, that can be found
in the file mri.tar.gz available at this page:
http://paulbourke.net/miscellaneous/povexamples/

All the voxels with a density above a certain threshold are filled with a
superellipsoid with a color corresponding to the density in each voxel. All
these superellipsoids were made with a single isosurface statement.

The colors were borrowed from the Inferno color map in Matplotlib:
https://matplotlib.org/examples/color/colormaps_reference.html

--
Tor Olav
http://subcube.com


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Attachments:
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Preview of image 'the superellipsoidal brain.jpg'
the superellipsoidal brain.jpg


 

From: And
Subject: Re: The Superellipsoidal Brain
Date: 16 Jan 2019 02:25:00
Message: <web.5c3e95c23a551e316c89d9810@news.povray.org>
"Tor Olav Kristensen" <tor### [at] TOBEREMOVEDgmailcom> wrote:
> Here's an image I made a while ago.
>
> I got the data for the brain from Paul Bourke's file mri.df3, that can be found
> in the file mri.tar.gz available at this page:
> http://paulbourke.net/miscellaneous/povexamples/
>
> All the voxels with a density above a certain threshold are filled with a
> superellipsoid with a color corresponding to the density in each voxel. All
> these superellipsoids were made with a single isosurface statement.
>
> The colors were borrowed from the Inferno color map in Matplotlib:
> https://matplotlib.org/examples/color/colormaps_reference.html
>
> --
> Tor Olav
> http://subcube.com

Very pretty.


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From: Tor Olav Kristensen
Subject: Re: The Superellipsoidal Brain
Date: 16 Jan 2019 02:55:01
Message: <web.5c3e9c663a551e31264be49d0@news.povray.org>
"And" <49341109@ntnu.edu.tw> wrote:
>...
>
> Very pretty.

Thank you And !

--
Tor Olav
http://subcube.com


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From: Bald Eagle
Subject: Re: The Superellipsoidal Brain
Date: 16 Jan 2019 04:25:01
Message: <web.5c3eb1113a551e31765e06870@news.povray.org>
"Tor Olav Kristensen" <tor### [at] TOBEREMOVEDgmailcom> wrote:
> Here's an image I made a while ago.

> All
> these superellipsoids were made with a single isosurface statement.

Whoa!
That's pretty cool!  :)

Have you tried experimenting with making them "supershapes"?

Good to see you dropping in, and dropping more mind-bending [sic] projects on
us.


May 2019 see many more   :)


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From: ingo
Subject: Re: The Superellipsoidal Brain
Date: 16 Jan 2019 07:04:06
Message: <XnsA9D952139821Aseed7@news.povray.org>
in news:web.5c3e1168d8b92d66a09309da0@news.povray.org Tor Olav Kristensen 
wrote:

> Here's an image I made a while ago

Oh yes. A fossilised amber brain.

ingo


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From: Paolo Gibellini
Subject: Re: The Superellipsoidal Brain
Date: 16 Jan 2019 09:19:24
Message: <5c3ef71c$1@news.povray.org>
Tor Olav Kristensen wrote on 15/01/2019 18:06:
> Here's an image I made a while ago.
> 
> I got the data for the brain from Paul Bourke's file mri.df3, that can be found
> in the file mri.tar.gz available at this page:
> http://paulbourke.net/miscellaneous/povexamples/
> 
> All the voxels with a density above a certain threshold are filled with a
> superellipsoid with a color corresponding to the density in each voxel. All
> these superellipsoids were made with a single isosurface statement.
> 
> The colors were borrowed from the Inferno color map in Matplotlib:
> https://matplotlib.org/examples/color/colormaps_reference.html
> 
> --
> Tor Olav
> http://subcube.com
> 
The discrete state of thinking... a nice image,
;-)
  Paolo


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From: Norbert Kern
Subject: Re: The Superellipsoidal Brain
Date: 16 Jan 2019 11:55:01
Message: <web.5c3f1a9f3a551e311fbfafc10@news.povray.org>
"Tor Olav Kristensen" <tor### [at] TOBEREMOVEDgmailcom> wrote:
> Here's an image I made a while ago.
>
> I got the data for the brain from Paul Bourke's file mri.df3, that can be found
> in the file mri.tar.gz available at this page:
> http://paulbourke.net/miscellaneous/povexamples/
>
> All the voxels with a density above a certain threshold are filled with a
> superellipsoid with a color corresponding to the density in each voxel. All
> these superellipsoids were made with a single isosurface statement.
>
> The colors were borrowed from the Inferno color map in Matplotlib:
> https://matplotlib.org/examples/color/colormaps_reference.html
>
> --
> Tor Olav
> http://subcube.com


Much better than my own approach to depict mri scans.
How did you remove bones, eyes etc.?

Norbert


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Attachments:
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self-image5a.jpg


 

From: Tor Olav Kristensen
Subject: Re: The Superellipsoidal Brain
Date: 19 Jan 2019 00:20:01
Message: <web.5c426ca33a551e31264be49d0@news.povray.org>
"Bald Eagle" <cre### [at] netscapenet> wrote:
> "Tor Olav Kristensen" <tor### [at] TOBEREMOVEDgmailcom> wrote:
> > Here's an image I made a while ago.
>
> > All
> > these superellipsoids were made with a single isosurface statement.
>
> Whoa!
> That's pretty cool!  :)

Thank you Bill !


> Have you tried experimenting with making them "supershapes"?

I had forgotten about the supershapes, so I searched for them
- and ended up at one of Paul Bourke's web pages again:
http://paulbourke.net/geometry/supershape/

I see now that there's two files there that I've made; ss_macro1.inc &
example1.pov
- So apparently I have been experimenting with them once...

It seems that they are commonly made with parametric meshes. Perhaps it is
possible to model some of them as isosurfaces. But that would be very slow, so I
think I'll wait some years (for more computing power) before looking into that.


> Good to see you dropping in, and dropping more mind-bending [sic] projects on
> us.
>
>
> May 2019 see many more   :)

=)

For a long while I have not had much time to work with POV-Ray, so I hope that I
will have more time for it soon.

--
Tor Olav
http://subcube.com


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From: Tor Olav Kristensen
Subject: Re: The Superellipsoidal Brain
Date: 19 Jan 2019 00:30:00
Message: <web.5c426f143a551e31264be49d0@news.povray.org>
ingo <ing### [at] tagpovrayorg> wrote:
> in news:web.5c3e1168d8b92d66a09309da0@news.povray.org Tor Olav Kristensen
> wrote:
>
> > Here's an image I made a while ago
>
> Oh yes. A fossilised amber brain.

Hehe, you're right, it looks like amber. I hadn't thought about that.

- Then maybe there's some insects somewhere within it...

--
Tor Olav
http://subcube.com


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From: Tor Olav Kristensen
Subject: Re: The Superellipsoidal Brain
Date: 19 Jan 2019 00:40:01
Message: <web.5c4270dc3a551e31264be49d0@news.povray.org>
Paolo Gibellini <p.g### [at] gmailcom> wrote:
>...
>...
> The discrete state of thinking... a nice image,
> ;-)

Yes, that would be a very good title for it.

I'm glad you like it.

--
Tor Olav
http://subcube.com


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