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From: SamuelT
Subject: I cracked the code - isosurface data file example (512x384)
Date: 29 Mar 2000 21:46:33
Message: <38E2C00D.610E22B6@aol.com>
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Well, it's only a code if you don't understand 3d data files. I worked
today to find how data files make 3d objects and managed to do so. The
initial setback was a translate problem similar to image_maps. Here's an
object I made from 1's and 0's.
P.S. Anyone have some MRI data files I can use? I would like to make a
media head, so you can see inside.
--
Samuel Benge
E-Mail: STB### [at] aol com
Visit the still unfinished isosurface tutorial:
http://members.aol.com/stbenge
Post a reply to this message
Attachments:
Download 'isodata.jpg' (34 KB)
Preview of image 'isodata.jpg'
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From: Simen Kvaal
Subject: Re: I cracked the code - isosurface data file example (512x384)
Date: 30 Mar 2000 01:57:57
Message: <38e2faf5@news.povray.org>
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>P.S. Anyone have some MRI data files I can use? I would like to make a
>media head, so you can see inside.
>
I have a bunch of Dicom CT-images of ... a pork chop.. No, really. My father
works at a food-research facility (correct term?) and he gave me a CD with
scanned data. Is this the kind of data (not object; but format) you are
looking for? In that case: Can you tell me how to convert it into 3d-data
for an isosurface?
Simen.
Post a reply to this message
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"SamuelT." wrote:
>
> Well, it's only a code if you don't understand 3d data files. I worked
> today to find how data files make 3d objects and managed to do so. The
> initial setback was a translate problem similar to image_maps. Here's an
> object I made from 1's and 0's.
>
> P.S. Anyone have some MRI data files I can use? I would like to make a
> media head, so you can see inside.
R. Suzuki has an image on his web site of an isosurface head he did when
the patch was first developed. He might be able to point you in the right
direction. I suspect he used a CT scan data set rather than an MRI but I
could be mistaken. Be forewarned these data sets are HUGE. I have a CT
scan data set for a a head (maybe the whole body can't remember) that
came with the official POV-Ray CD. IIRC the file size for that data set
alone is well over 15 megs in size. No way I could email it to you.
--
Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
Post a reply to this message
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Ken wrote:
> R. Suzuki has an image on his web site of an isosurface head he did when
> the patch was first developed.
See - http://www.public.usit.net/rsuzuki/e/povray/iso/exmpl1.html
--
Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
Post a reply to this message
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This looks realy good.
--
Cheers
Steve email mailto:sjl### [at] ndirectcouk
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http://www.ndirect.co.uk/~sjlen/
or http://start.at/zero-pps
11:35am up 1 day, 12:23, 6 users, load average: 1.02, 1.03, 1.01
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From: SamuelT
Subject: Re: I cracked the code - isosurface data file example (512x384)
Date: 30 Mar 2000 13:47:31
Message: <38E3A15C.927D1F8C@aol.com>
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I'm just getting into this 3d-data stuff myself. The MegaPov docs say the
isosurface can support 1-byte, 2-byte, and 4-byte binary data and also text
data, which is what I used. I don't know about 1, 2 and 4-byte data, so I can't
help you convert it. What does your data look like? I'd like to try it, but I
would need to know what the x y z dimensions are.
Simen Kvaal wrote:
> >P.S. Anyone have some MRI data files I can use? I would like to make a
> >media head, so you can see inside.
> >
>
> I have a bunch of Dicom CT-images of ... a pork chop.. No, really. My father
> works at a food-research facility (correct term?) and he gave me a CD with
> scanned data. Is this the kind of data (not object; but format) you are
> looking for? In that case: Can you tell me how to convert it into 3d-data
> for an isosurface?
>
> Simen.
--
Samuel Benge
E-Mail: STB### [at] aolcom
Visit the still unfinished isosurface tutorial: http://members.aol.com/stbenge
Post a reply to this message
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From: SamuelT
Subject: Re: I cracked the code - isosurface data file example (512x384)
Date: 30 Mar 2000 13:49:54
Message: <38E3A1ED.FC0219B8@aol.com>
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Thanks Ken. 15 megs... wow. I've been seeing small ones (less than a meg)
around on the web, but I can't use them.
Ken wrote:
> Ken wrote:
>
> > R. Suzuki has an image on his web site of an isosurface head he did when
> > the patch was first developed.
>
> See - http://www.public.usit.net/rsuzuki/e/povray/iso/exmpl1.html
>
> --
> Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
--
Samuel Benge
E-Mail: STB### [at] aolcom
Visit the still unfinished isosurface tutorial: http://members.aol.com/stbenge
Post a reply to this message
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"SamuelT." wrote:
>
> Thanks Ken. 15 megs... wow. I've been seeing small ones (less than a meg)
> around on the web, but I can't use them.
Here is the info from the Pov CD. I was mistaken about the size. The zip
file is only 9 megs but still more than my email system can support.
3dhead.zip Head data - A 109-slice MRI data set of a human head.
Complete slices are stored consecutively as a 256 x 256 array.
Pixels consist of 2 consecutive bytes making one binary integer.
Data taken on the Siemens Magnetom and provided courtesy of
Siemens Medical Systems, Inc., Iselin, NJ.
If you get desperate for it e-mail me and maybe we can work out a
transfer somehow.
--
Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
Post a reply to this message
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From: SamuelT
Subject: Re: I cracked the code - isosurface data file example (512x384)
Date: 30 Mar 2000 22:15:25
Message: <38E41865.495675F8@aol.com>
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I followed your link and found no data file. It lead to a pov directory which had
a broken link. I'll keep searching around though.
Ken wrote:
> Here is the info from the Pov CD. I was mistaken about the size. The zip
> file is only 9 megs but still more than my email system can support.
>
> 3dhead.zip Head data - A 109-slice MRI data set of a human head.
> Complete slices are stored consecutively as a 256 x 256 array.
> Pixels consist of 2 consecutive bytes making one binary integer.
> Data taken on the Siemens Magnetom and provided courtesy of
> Siemens Medical Systems, Inc., Iselin, NJ.
>
> If you get desperate for it e-mail me and maybe we can work out a
> transfer somehow.
>
> --
> Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
--
Samuel Benge
E-Mail: STB### [at] aolcom
Visit the still unfinished isosurface tutorial: http://members.aol.com/stbenge
Post a reply to this message
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"SamuelT." wrote:
>
> I followed your link and found no data file. It lead to a pov directory which had
> a broken link. I'll keep searching around though.
I only presented that to you so that you know it has been done. The
link to the data set is of course bad. The POV-Team used to have the
POV-CD available from their ftp site but had to remove it to make
room for other resources - such as this news server.
--
Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
Post a reply to this message
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