Re: Creation of free-form-surfaces on UG from the IGES contours

From: Ryu, Jae-Hun (
Date: Fri Mar 24 2000 - 06:25:01 EET

If you want to convert STL into point cloud, I can do it using my modules.
Acutally, I have experiance of recontructing CAD model from CT images
as well as I have developed software modules for dealing with CT images
and contour data.The reason why CAD model reconstructed UG has poor
quality is that the contour data might be noisy. My module can smoothen
the contour data to improve surface quality.
If you are interesting my moduls, contact me.

Ryu, Jae-Hun
email :

----- Original Message -----
From: Le Chi Hieu <>
To: rp <>
Sent: Wednesday, March 22, 2000 11:59 AM
Subject: Creation of free-form-surfaces on UG from the IGES contours

> Hi RPML ,
> Regarding to the creation of free form surfaces on UG from the IGES
> contours created by MIMICS (Materialize), I have some troubles related
> to the accuracy of the re-constructed model in UG.
> The medical modeling by MIMICS can create very good 3D solid models of
> human skeleton from CT images. These 3D models can be exported to STL or
> some RP interfaces. I would like to transfer this 3D models from MIMICS
> to UG for other designs because UG is very good for CAD manipulations.
> Unfortunately, UG can not support importing STL models. The only thing
> I can do is that I can import the IGES contours created by MIMICS to
> UG. Basing on these IGES contours, I reconstruct the 3 D solid model;
> but rpI have to lost a certain accuracy degree on the reconstructed 3D
> models.
> I have heard that some Reverse Engineering packages can transform the
> STL model to cloud-Point data. From these cloud-point data, one can
> reconstruct the 3D models under the free form surfaces, and then can
> export to IGES interface.
> Are there any one have better ways to control these CAD manipulation ?
> Thank and regards,
> ...............................................................................................................
> [*] LE CHI HIEU, Research Associate and DS
> Biomechanics and Engineering Design Division. Katholieke
> Universiteit Leuven. Celestijnenlaan 200A. B-3001 Heverlee
> or
> Industrial Systems Engineering Division. School of Advanced
> Technologies. Asian Institute of Technology.P.O.BOX4. Klong
> Luang.Pathumthani12120,THAILAND.
> [*] EMAIL
> To: [or]
> cc: [or]
> For more information about the rp-ml, see

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