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2 Aug 2024 04:22:09 EDT (-0400)
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From: Jörg 'Yadgar' Bleimann
Subject: Re: Background
Date: 24 Jan 2008 04:49:24
Message: <47985f24$1@news.povray.org>
High!

H. Karsten schrieb:
> A background for a street scene.

Weird... looks like proto-Incan ruins somewhere on the windswept 
Bolivian Altiplano at almost 5000 metres above sea level, given the 
ultra-deep blue sky!

Or is it a scrapyard for 1970s sci-fi greebled spaceships?

See you in Khyberspace - http://www.khyberspace.de

Yadgar

Now playing: Hey Cisco, live 199? (Deep Purple)


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From: Jan Dvorak
Subject: Re: Background
Date: 24 Jan 2008 05:51:33
Message: <47986db5@news.povray.org>

> High!
> 
> H. Karsten schrieb:
>> A background for a street scene.
> 
> Weird... looks like proto-Incan ruins somewhere on the windswept 
> Bolivian Altiplano at almost 5000 metres above sea level, given the 
> ultra-deep blue sky!
> 
maybe the picture is gamma-corrected for gamma 4.84 displays


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From: H  Karsten
Subject: Re: Background
Date: 24 Jan 2008 06:05:00
Message: <web.4798700c6c3f91fe811410630@news.povray.org>
The object is completely automatic generated with several medical programs for
MRT and CT data.

It also looks to me like its some ruins in the desert. Cars and people should
share this look. (maybe an India style or something..)

-holger-


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From: H  Karsten
Subject: Re: Background
Date: 24 Jan 2008 06:10:01
Message: <web.479871676c3f91fe811410630@news.povray.org>
Jan Dvorak <jan### [at] centrumcz> wrote:

> > High!
> >
> > H. Karsten schrieb:
> >> A background for a street scene.
> >
> > Weird... looks like proto-Incan ruins somewhere on the windswept
> > Bolivian Altiplano at almost 5000 metres above sea level, given the
> > ultra-deep blue sky!
> >
> maybe the picture is gamma-corrected for gamma 4.84 displays

Here is the scene, the gamma was 2. (without the blocs, this would be lots of
megabytes...)

#version 3.5;

//h. kasten, Berlin
//1440x600

#include "colors.inc"



global_settings {assumed_gamma 2 radiosity {pretrace_start 1 pretrace_end
0.0000001 count 50 error_bound 0.05 recursion_limit 10 brightness 1}}



camera {

  ultra_wide_angle

  //omnimax

  location  <-0.25, 0.01, -2>*1.5

  direction 1.5*z

  right     x*image_width/image_height

  angle 70



 aperture 0.02

 blur_samples 64

 focal_point <-0.05, 0.6,  0.0>

 confidence 0.5

 variance 1/1280



//  look_at   <-0.05, 0.6,  0.0>

  look_at   <-0.25, 0.6,  0.0>



}



light_source {

  <0, 0, 0>

  color rgb <1, 1, 1>

  translate <-30, 30, -60>

}



sky_sphere {

  pigment {

    gradient y

    color_map {

      [0.0 rgb <0.7,0.65,0.5>]

      [0.25 rgb <0.0,0.1,0.8>]

      [0.5 rgb <0.0,0.1,0.8>*0.5]

      [1.0 rgb 0]

    }

  turbulence .325

  translate <0,-0.2,0>

  scale 1.5

  octaves 10

  lambda 3

  }

  rotate <0,-10,0>

}

plane {

  y, 0

pigment { color rgb <0.7,0.65,0.5>*1.5 }

finish{ambient 0 diffuse 1}

}


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From: Jan Dvorak
Subject: Re: Background
Date: 24 Jan 2008 08:36:48
Message: <47989470$1@news.povray.org>
you should always use assumed_gamma 1 so that the scene renders accurately
H. Karsten napsal(a):
> Jan Dvorak <jan### [at] centrumcz> wrote:

>>> High!
>>>
>>> H. Karsten schrieb:
>>>> A background for a street scene.
>>> Weird... looks like proto-Incan ruins somewhere on the windswept
>>> Bolivian Altiplano at almost 5000 metres above sea level, given the
>>> ultra-deep blue sky!
>>>
>> maybe the picture is gamma-corrected for gamma 4.84 displays
> 
> Here is the scene, the gamma was 2. (without the blocs, this would be lots of
> megabytes...)
> 
> #version 3.5;
> 
> //h. kasten, Berlin
> //1440x600
> 
> #include "colors.inc"
> 
> 
> 
> global_settings {assumed_gamma 2 radiosity {pretrace_start 1 pretrace_end
> 0.0000001 count 50 error_bound 0.05 recursion_limit 10 brightness 1}}


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From: H  Karsten
Subject: Re: Background
Date: 24 Jan 2008 09:05:02
Message: <web.4798994b6c3f91fe811410630@news.povray.org>
Jan Dvorak <jan### [at] centrumcz> wrote:
> you should always use assumed_gamma 1 so that the scene renders accurately

Yes, but I realy love extreme deep blue sky's and high contrast images.
It's the same way I would make photographic images.

Combine a deep blue sky with an ultra_whide_angel camera - it looks always great

:)


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From: [GDS|Entropy]
Subject: Re: Background
Date: 25 Jan 2008 21:24:00
Message: <479a99c0$1@news.povray.org>
Hello,

Are those programs free?

Thanks,
Ian

"H. Karsten" <h-karsten()web.de> wrote in message 
news:web.4798700c6c3f91fe811410630@news.povray.org...
> The object is completely automatic generated with several medical programs 
> for
> MRT and CT data.
>
> It also looks to me like its some ruins in the desert. Cars and people 
> should
> share this look. (maybe an India style or something..)
>
> -holger-
>
>


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From: Alain
Subject: Re: Background
Date: 26 Jan 2008 09:21:48
Message: <479b41fc$1@news.povray.org>
[GDS|Entropy] nous apporta ses lumieres en ce 2008/01/25 21:23:
> Hello,
> 
> Are those programs free?
> 
> Thanks,
> Ian
> 
I doubt it. Most medical programms are specialised applications, only sold to 
medical facilities, and usualy cost several $1000.
Another limit: they frequently rely on some input device costing near the 
millions mark...

-- 
Alain
-------------------------------------------------
You know you've been raytracing too long when you've gained twenty pounds 
sitting at the computer, but can't tell because your beard covers your stomach.
Taps a.k.a. Tapio Vocadlo


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From: H  Karsten
Subject: Re: Background
Date: 26 Jan 2008 17:40:00
Message: <web.479bb5b36c3f91fe38eb9c500@news.povray.org>
At the moment I'm working as a CGI-supervisor for a film documentary company.
In the last Project, I've worked a lot with scientists and there programs. One
of it was "Matlab" its not free. Another is designed for being directly
connected to a "MRT". It works without the machine, but I think, you cant by it
in a normal way.

-holger-


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From: andrel
Subject: Re: Background
Date: 27 Jan 2008 15:57:37
Message: <479CF04E.9040105@hotmail.com>
H. Karsten wrote:
> At the moment I'm working as a CGI-supervisor for a film documentary company.
> In the last Project, I've worked a lot with scientists and there programs. One
> of it was "Matlab" its not free. 
Octave is a free 'clone' of it. But you still need the script files 
because Matlab is just a big mathematical front end/interpreter. And I 
wasn't able yet to install it in such a way that my scripts work. :(

> Another is designed for being directly
> connected to a "MRT". It works without the machine, but I think, you cant by it
> in a normal way.
> 
The data from such machines is stored in DICOM format. There are several 
free DICOM readers and even source. And the document format is open so 
you can always write your own.

Yet the biggest problem is getting data because of privacy issues.


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