-----Original Message-----
From: Richard Fetter [mailto:rfetter@...]
Sent: woensdag 22 maart 2006 15:32
To: John Fiala; Reconstruct Users; Gobee, O.P. (ANA)
Subject: Re: [Reconstruct] Suggestion for smoothing?

John, Paul, other Reconstructers,

Just want to add to this thread about getting discounted versions of 3DS Max, current version 8 by Autodesk.  In addition to Creation Engine, the academic discounter Studica (www.studica.com) also sells software and hardware at discounted prices for those with an academic affiliation.  Currently they are having a "Spring Sale" - their words - on 3DS Max 8 Full version for faculty and staff at $389.95.  I have no info on what they do for international sales, but you might check them out.

Richard


At 09:03 AM 3/22/2006, John Fiala wrote:

Paul,
 
Academic licenses for 3DS Max 7 for less than $700 appear to still be available from www.creationengine.com
The "relax" modifier in 3DS Max has worked well for me in the past.
 
However, it may be possible to add an export of traces in DXF format if you think this would help you.
It would be helpful in this regard to know whether Amira can accept a DXF export from the program IGL Trace
( http://synapses.bu.edu/tools/trace/trace.htm) to be sure of the correct export format.
 
To figure out whether Reconstruct could do it after all I'd have to know more about your problem.
 
John.
 

----- Original Message -----

From: opgobee

To: reconstruct_users@yahoogroups.com

Sent: Tuesday, March 21, 2006 5:34 PM

Subject: [Reconstruct] Suggestion for smoothing?

Hi!

I'm using Reconstruct since one and a half month and very satisfied

with it. It's stable, fast, offers good possibilities and the 3D

rendering is very nice. But I have the following problem that I

couln't solve yet. Maybe somebody could offer a suggestion.

I need to smoothen the object (unfortunately I cannot attach a

screenshot). Due to the section images that don't allow perfect

tracings, the 3D object is 'spiky', i.e. has an irregular wall. I

tried using the simplify tool on whole objects as explained in a

earlier posting on this message board, but didn't manage to find a

resolution that gives a real improvement. Either there is no visible

effect or it becomes too coarse. It gives the impression it

simplifies in 2D, so each section separately. What I would need

would be a kind of 3D averaging(so over several consecutive

sections) to average out spikes and irregularities.

At our lab we have Amira (http://www.tgs.com/) that smoothens really

nicely. However I chose for Reconstruct as Amira(to our knowledge)

doesn't allow tracing of coloured images - one first has to split up

the image into separate red, green and blue channels - losing the

combination of information. Also, the Amira version we have doesn't

handle usage of a large stack of high res images, which Reconstruct

does troublefree. To nevertheless benefit from Amira's nice

smoothening capacity, I tried tracing in Reconstruct, then importing

(as VRML2) in Amira. Unfortunately, one needs the information per

section to use Amira's smoothening. I also tried Viz-Up

(http://www.vizup.com/) but that also only became coarse; tried

Chisel ( http://www2.hrp.no/vr/tools/chisel/install.htm) that

improved slightly but nothing coming close to Amira. Many 3D

programs that maybe could do the job (e.g. 3D Studio Max) are

exuberantly expensive.

Does anyone have any suggestion?

- e.g. for a reasonably priced program that does smoothen well?

- or how to import the Reconstruct sectional data (the files with

number extensions) into Amira

- or how I could get Reconstruct itself to do it after all?

Thanks for any suggestion and once more thanks for the great tool

Reconstruct!

Paul Gobée

Dept. Anatomy, LUMC, Leiden, Netherlands

 

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