POV-Ray : Newsgroups : povray.general : Rendering medical volume (e.g. MRI) data? Server Time
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From: Tim Nikias
Subject: Re: Rendering medical volume (e.g. MRI) data?
Date: 14 Oct 2002 14:06:01
Message: <3dab0789@news.povray.org>
Yup, understood your point. Actually, even a
"classic" real image of this idea (placing real
glass-blocks with "painted" image-maps, all
held by metal, some nice spotlights...) might
look somewhat... Aesthetic.

Someday, I'll give it a try...



--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

>
> I think you are thinking along the lines of what I *don't* want to do!
> It's actually very simple. Think of, say, 10 slices of an image, each
> one fully transparent, but emitting light. (Sorry, newbie to pov so
> might not use the right terms.)
>
> You will be looking at and through all the slices, and your eye/brain
> will make these into a 3D image.
>
> You could do this simply by printing each slice onto a glass sheet.
> Where there is no image, the glass is transparent. Where there is an
> image, the image is, white, say. When you look at the whole set, you
> will see a 3D image with full parallax as you move your head.
>
> Except you can do it better in povray as you don't have the physical
> constraints of one image hiding another.
>
> Hope you see what I am saying.
>
> --
> Kaveh


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From: Kaveh
Subject: Re: Rendering medical volume (e.g. MRI) data?
Date: 14 Oct 2002 14:38:47
Message: <1fk26ha.f0gu4j17voufqN%kaveh@delete_this.focalimage.com>
ABX <abx### [at] abxartpl> wrote:

> On Mon, 14 Oct 2002 13:33:56 +0100, kav### [at] delete_thisfocalimagecom (Kaveh)
> wrote:
> > 2. Has anyone done this already in povray? I don't want to reinvent the
> > wheel.
> 
> Is DF3 format sufficient ?

As a newbie, I am reading up on it now. ;-) Seems like the right way to
go.

> If you want operate on slices with intersections it could be simple to write
> functions based on 2D image_patterns interpolated in 3rd dimension and applied
> as pattern to media or as function to isosurface.
> 

I feel there should be some kind of light emission from the slices. I am
going to experiment and see what happens.

-- 
Kaveh


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From: ingo
Subject: Re: Rendering medical volume (e.g. MRI) data?
Date: 14 Oct 2002 15:20:23
Message: <Xns92A7D9E2E36C0seed7@povray.org>
in news:1fk26ha.f0gu4j17voufqN%kaveh@delete_this.focalimage.com Kaveh 
wrote:

> I feel there should be some kind of light emission from the slices. I am
> going to experiment and see what happens.
> 
> 

Look into emitting media, there is the demo scene 
../scenes/interior/media/galaxy.pov (although it uses scattering media).

also of interest can be this unofficial version of POV-Ray:
http://staff.aist.go.jp/r-suzuki/e/povray/iso/df_body.htm


Ingo


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