Skin Question
9 messages in this thread
Peter, There is no skin modeler for 3DS that will work with dissimilar vertex
counts but that doesn't mean there isn't one. I'm not sure as far as other
packages go though. Maybe someone else will jump in and let you know. What are
you trying to do anyway? It seems many of us have all but abandoned skin and
slice for Bones Pro, although the former does still have its uses. If you leave
some more info. maybe I or someone else will be able to help out more.
DM
I'm tracing CT scans and lofting them. Tracing programs would help if I didn't
have to end up with a specific vertex count at each level. Its easier for me
now to use Corel to manually trace over the scans and then copy the tracing to
the next level and adjust it to the next scan. I've modeled the human nasal
sinuses this way, took me months and ended up with 100,000 vertexes. Its being
used to train sinus surgeons (I'm one) using stereo renderings and models of
instruments in conjunction with stereoscopic video tapes of operations and
cadaveric dissections. Next is the middle and inner ear, its complicated and
I'm hoping not to take 6 months to model it too. The voxel reconstructoin
programs for CT scans are out there but you can't animate mucous flow, cilia
motion or blood vessels on them. Thanks for any help, I hear Corel 6.0 may have
some tools that will help, plus I hope to run it on my new Alpha. Maybe 3DS NT
will have different tools.
Wow Peter, sounds like very interesting work. Have you checked into the
feasibility of having a place like Viewpoint do the modeling? It would probably
be costly but heck you're a surgeon! <BG> I believe, I'd use Corel also for
tracing. The shaper doesn't cut it for such a task as you can't zoom in on an
image. Other than that, I don't know of any solutions. I thought I heard
somewhere that MRI could be used to generate 3D data. Would something like that
have enough resolution? I really have no idea but it's a thought. Wish I had an
Alpha. Like it? Hopefully this fall/winter I'll be able to afford it. Right
around the time that R5 ships. Well, good luck. I'd sure be interested in
seeing some of your images. BTW, do you have optimize? It could help bring your
mesh density down.
See ya.
DM
Thanks, I have optimize. MRI's can generate voxel images not meshes, at least
not of the structures I'm modeling. and I would use viewpoint but the anatomy
is so complex in the sinuses and middle ear that a such great deal of
interpretation and artistic liscence is needed that only someone familiar with
the structures could make them. I'll be uploading some renderings soon inthe
images section.
Peter:
Your work sounds very interesting albeit tedious in the modelling stage. Is
there a reason why you have not opted for laser scanning to obtain your meshes?
– Bob Ritger
The models are of the internal air spaces between your eyes. Sort of a
honeycomb of interconnected spaces each about lima bean size, its called the
ethmoid labyrinth for good reason. I don't know anything about laser scanning
but doubt it could get inside.
Peter:
Perhaps Paul Lind could help out. I'm not sure of the accuracy and resolution
of laser scanners but I was under the impression that hundreds of an inch was
the ballpark. What you are describing sounds like something measured in
angstroms and may indeed be too small to scan accurately. I believe Paul has a
scanner that can even create accurate maps to boot.
– Bob Ritger
>> too small to scan accurately <<
Are you volunteering to put your labyrinth in the beam?<g>
-Ted Boardman
Ted:
>> Are you volunteering to put your labyrinth in the beam?<g> <<
I'm sure I could provide a suitable cadaver, especially after SIGGRAPH. <G>
– Bob Ritger