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'[OT] 3d chopper'
2000\02\25@121707 by Wagner Lipnharski

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Two weeks looking for a software package that can integrate 5 or more
simple outlined images taken from  a real image from different angles,
and compose them into a 3d wire frame.  Then, I need to chop this 3d
image in horizontal (or vertical) slices as a catscan does.  As we have
here in Piclist all sort of crazy persons, I believe someone should know
something to help me.  Tks. Wagner.

2000\02\25@130122 by jamesnewton

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You are going to have to write that one. I've been looking for years. My
idea was to scan 3D by placing an object on a turn table and watching it
with a frame grabber / video camera as it turned. By noticing how much a
given pixel moved from frame to frame, the depth of the object at that point
could be calculated.

See:
http://techref.massmind.org/robotics
under the eyes section.

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{Original Message removed}

2000\02\25@135202 by Anton van Straaten

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Wagner,

I don't suppose it's feasible in your case to do a real CAT scan of the
object in question?

An excellent open source software package that's often used to process CAT
scans and MRIs is IBM's Open Visualization Data Explorer (OpenDX) - see
http://www.opendx.org/.

The site has a gallery which gives some idea of the software's uses, but
some relevant examples include its use in commercial and academic CAT scan
and MRI data processing, at
http://opendx.npaci.edu/publications/medical/VisExamples/RTP.html and
http://iacl.ece.jhu.edu/agg/projects/brain.html; as well as the virtual
reconstructions of fossils, such as the skull of a northwest African Middle
Pleistocene hominid, at
http://opendx.npaci.edu/publications/anthropology/human-fossils/index.html.

However, in all these examples, the 3D data was obtained using MRI or
CT-type scans.  Once you have the data in 3D form, the software will easily
produce slices for you, and even let you do things like animate a slice
travelling through the object from one side to the other.

The software is highly programmable, using a powerful visual programming
language, and an underlying macro language, so it's possible you could use
that to do your integration of images into 3D.  You might try asking about
that on the opendx-users mailing list - someone there might have dealt with
that.

Anton


> {Original Message removed}

2000\02\25@142949 by James R. Cunningham

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Try PhotoModeler.  I can fish out their phone number for you, but it'd
probably be quicker just to do a web search.  The program is quite good at
the 3-D wireframe portion of this.  I don't remember if they can cut
cross-sections, but do know that they can export a dxf file, so there are
several options for doing the x-sections if they can't.  Holler back at me
if you can't find the contact address or phone number.  I think they're in
Vancouver.

All the best,

Jim

Wagner Lipnharski wrote:

> Two weeks looking for a software package that can integrate 5 or more
> simple outlined images taken from  a real image from different angles,
> and compose them into a 3d wire frame.  Then, I need to chop this 3d
> image in horizontal (or vertical) slices as a catscan does.  As we have
> here in Piclist all sort of crazy persons, I believe someone should know
> something to help me.  Tks. Wagner.

2000\02\25@151114 by Robert Rolf

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"James R. Cunningham" wrote:
>
> Try PhotoModeler.  I can fish out their phone number for you, but it'd
> probably be quicker just to do a web search.  The program is quite good at
> the 3-D wireframe portion of this.  I don't remember if they can cut
> cross-sections, but do know that they can export a dxf file, so there are
> several options for doing the x-sections if they can't.  Holler back at me
> if you can't find the contact address or phone number.  I think they're in
> Vancouver.

They are:

http://photomodeler.com/
Contact: Eos Systems Inc. 205-2034 West 12th Ave Vancouver, V6J 2G2
tel:604-732-6658 fax:604-732-6642
e-mail: .....questionsKILLspamspam@spam@photomodeler.com

Pricey but turnkey.
$895USD.

> > Two weeks looking for a software package that can integrate 5 or more

Must be using the wrong search engine or keywords.
They turned up in my first set of hits (Altavista "3D near model* near
photo* near digiti*")

> > simple outlined images taken from  a real image from different angles,
> > and compose them into a 3d wire frame.  Then, I need to chop this 3d
> > image in horizontal (or vertical) slices as a catscan does.  As we have
> > here in Piclist all sort of crazy persons, I believe someone should know
> > something to help me.  Tks. Wagner.

2000\02\25@152415 by Terry

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face
Go take a peek at Rhino

http://www.rhino3d.com

Best 3D CAD/ Modelling package i've tried especially at under USD800.00
Learning curve is unbelievably fast, even better if u're familiar with
AutoCad. What u're trying to do is build a model by cutting out thin layers
and stacking them up. Sterolithography or SLA does the same at 0.1mm
slices. Rhino outputs SLA files so u might be able use it. If u're going to
be using thicker slices,  Rhino easily let's u extract an outline shape or
plane from a 3D object.


Cheers
Terry



At 12:13 PM 2/25/00 -0500, you wrote:
>Two weeks looking for a software package that can integrate 5 or more
>simple outlined images taken from  a real image from different angles,
>and compose them into a 3d wire frame.  Then, I need to chop this 3d
>image in horizontal (or vertical) slices as a catscan does.  As we have
>here in Piclist all sort of crazy persons, I believe someone should know
>something to help me.  Tks. Wagner.
>

2000\02\25@161302 by Robert Rolf

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Terry wrote:
> Go take a peek at Rhino
>
> http://www.rhino3d.com
http://www.rhino3d.com/
If you put in the part you get a hotlink with most
modern e-mail clients. See the difference?


> Best 3D CAD/ Modelling package i've tried especially at under USD800.00

Yes, but it doesn't work with photos. It relies on 3rd part
digitizers to get a 3D model to work with (AFAICT)

> Learning curve is unbelievably fast, even better if u're familiar with
> AutoCad. What u're trying to do is build a model by cutting out thin layers
> and stacking them up. Sterolithography or SLA does the same at 0.1mm
> slices. Rhino outputs SLA files so u might be able use it. If u're going to
> be using thicker slices,  Rhino easily let's u extract an outline shape or
> plane from a 3D object.

Looks like a nice package. Yet another distraction....

See also
http://www.3dconstruction.com/

for another photo based 3D digitizing package.

{Quote hidden}

Funny thing is I was just discussing this topic (3D from photos)
with a friend last night.

So anyone have some suggestions for inexpensive 3D milling machines
or URLs to suitable software for DIY construction?


'[OT] 3d chopper'
2000\03\02@231033 by Wagner Lipnharski
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I downloaded Rhino and dedicated few time during the weekend... look
what I did in few hours...
http://www.ustr.net/rhino/
ps: for the distracted... what you see there, are not pictures... just
3D rendering...
:)

Robert Rolf wrote:
{Quote hidden}

2000\03\03@144950 by jamesnewton

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Wow!

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{Original Message removed}

2000\03\06@025913 by oyvind

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Hmm.
I'm impressed, Wagner.

I've also tried Rhino and I find it to be a great package, but I
think I would have used much more time than just a few hours modeling
that Dremel.

How did you get the text correct? Did you use any special fonts, or
did you draw the letters?

-¯yvind

{Quote hidden}

_______________________________________________
¯yvind Kaurstad, .....oyvindKILLspamspam.....safetel.no

Safetel AS
P.B. 405, N-4067 Stavanger, Norway
Tel: +47 51 81 78 80 (Switchboard)
    +47 51 81 78 82 (Office)
    +47 51 81 78 93 (Fax)

2000\03\06@105400 by Wagner Lipnharski

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That's the tricky part. It took me few hours to complete the Dremel, but
it took almost 3 days in the respective Rhino forum discussion to figure
out how to do it.  The most common way is just use the native Rhino Text
function, generate text in "surface" mode, then project the text image
over the object, then use the projection to split the object surface, so
deleting the curves (projection) you have access to the split letters at
the object surface (as if you cut letters at the peel of an orange),
then you can paint it... probably would take 4 hours to apply all that
text...too much work, isn't it?  Then somebody just whispered at my ear;
"Why not just "bend" the original letters over the object?"... 2 minutes
to apply it.  Yes, it is unbelievable how fast can you produce with
Rhino, unfortunately not from photographs... :(

¯yvind Kaurstad wrote:
{Quote hidden}

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