Surfacing IGES point clouds
Surfacing IGES point clouds
(OP)
I've been stuck with this forever. I have an IGES file of a 3D Surface scan with about 8000 point clouds. I need to somehow put a surface on the point clouds, and need to keep the cross section concentric. Any help would be truly appreciated.
After the surface scan, I have a lot of point cloud data (about 8,000 points). Here is what it looks like in SolidWorks:

The object is a heart valve stent, so imagine a cosine wave around a cylinder...
So the real object that we scanned has a circular cross section, and we are trying to recreate a 3-dimensional figure of the stent. If I look at the cross section, it looks like a bunch of zig zags if I connect the lines, but I need to somehow keep it concentric.
After the surface scan, I have a lot of point cloud data (about 8,000 points). Here is what it looks like in SolidWorks:

The object is a heart valve stent, so imagine a cosine wave around a cylinder...
So the real object that we scanned has a circular cross section, and we are trying to recreate a 3-dimensional figure of the stent. If I look at the cross section, it looks like a bunch of zig zags if I connect the lines, but I need to somehow keep it concentric.






RE: Surfacing IGES point clouds
Tom
RE: Surfacing IGES point clouds
As for the point cloud data, I have the IGES file. I can upload it sometime, but is that what you were looking for? Thanks so much.
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
h
-Peter
RE: Surfacing IGES point clouds
To make the shape in SW, either projected curves or a spline on a cylindrical surface would be my approach. Projected curves would be easier to work with.
Good luck.
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
Thanks, Tom
RE: Surfacing IGES point clouds
As for the photo, I cannot seem to get a copy of the picture, but if you go to this animation (ht
-Peter
RE: Surfacing IGES point clouds
http://solidworks.cad.de/mm_24.htm
Convert your .igs file to a tab delimited text file with the xyz data. This is your only hope to create something in solidworks, but unordered scan data is very hard to work with.
What you really need to do is use a reverse engineering app that will clean up your noisey data, then triangulate a surface from the data. You can then use this polygon model for FEA, and if you have the right package you can surface the triangles to create a NURBS or parametric CAD model. Look up Rapid Form or Raindrop or CopyCad or 3d Reshaper to name a few. This stuff gets expensive.
If you post your data I'll take a look at it and give you an example of going from points to polys to nurbs with my tools.
RFUS
RE: Surfacing IGES point clouds
-Peter
RE: Surfacing IGES point clouds
Mooload wasn't working so its on this paininthebut site. keep going in till you get it to download... hit the one below where it wants you to pay a buck, and then save target as, then wait a while and it will come.
htt
Run the macro I pointed you towards on this file. Now, if you wanted to surface this in SW, you would have to do this:
Close the 3d sketch. You have to go and 'insert curve through reference points' by selecting the points in each scan line. Use the point selection filter with view orientations. This will take a while. Then create a lofted surface using the curves.
But...You want to sweep a circle around this so now at least you have these points to use as ref geomerty to go in and create a curve around this thing.
If you wanted to have a model for FEA you would need to export your final model as STl which will give you a triangle network or faceted model.
During lunch, I tried triangulating and using and auto surface on this data and its pretty rough.
RFUS
RE: Surfacing IGES point clouds
However, since you tested that data, and it came out pretty rough, that is exactly what we can't use. I'm going to try to rescan the object again, and take some good pictures of it.
Sweeping the circle around those reference points is exactly what I need to do, but it seems like it'll be more difficult than I ever anticipated. Is there any other way to sweep the circle around? This project is hopeless. Thanks.
-Peter
RE: Surfacing IGES point clouds
I don't understand the instructions on this website.
Thanks,
Tom
RE: Surfacing IGES point clouds
Then it should look like this: [i m g http://i
RE: Surfacing IGES point clouds
Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
RE: Surfacing IGES point clouds
-Peter
RE: Surfacing IGES point clouds
Pricewise on the low end, you have Rainbows's Geomagic, on the mid to high end, you have Innovmetric's Polyworks, on the high end you have Imageware made by UG (I think). And that is just scratching the surface. They will not be parametric in solidworks, although importing from such software should not be a problem for Solidworks. Geomagic is usually the easiest to use, and Imageware is usally the most powerful.
RE: Surfacing IGES point clouds
http://i
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
RE: Surfacing IGES point clouds
-Peter
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
-Peter
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
-Peter
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
RE: Surfacing IGES point clouds
http://
Blimey: Thanks for the File Hosting link
RE: Surfacing IGES point clouds
-Peter
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
RE: Surfacing IGES point clouds
.stl file:
http://www.yourfilelink.com/get.php?fid=7606
.igs file:
http://www.yourfilelink.com/get.php?fid=7607
.step file:
http://www.yourfilelink.com/get.php?fid=7614
RE: Surfacing IGES point clouds
-Peter
RE: Surfacing IGES point clouds
Catia have a powerfull module that can edit and create curves from point cloud data.
CATIA Digitized Shape Editor 2 (DSE)
http://
RE: Surfacing IGES point clouds
Jason
UG NX2.02.2 on Win2000 SP3
SolidWorks 2005 SP5.0 on WinXP SP2
SolidWorks 2006 SP3.0 on WinXP SP2