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DAVID-Laserscanner Forum • View topic - Is it possible to use david without shape fusion....
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Is it possible to use david without shape fusion....

The place for all topics related to the 'Shapefusion' tool of DAVID.

Is it possible to use david without shape fusion....

Postby OZON » Fri Apr 18, 2008 5:45 pm

Hi,

I would like to scan but I dont have that 99 euros for shapefusion.

I am really newbie what comes to scanning, please help. I have never 3d scanned before.

I have found such a software as meshlab, its free.

It seems to have a new feature which reminds me of shape fusion. Has anybody used it, is it useful? Link is here:

http://meshlab.sourceforge.net/SnapMeshLab.align2.png


Because one scan can be saved as obj why not to combine the scannings from different angles in Rhino or in Blender perhaps? In blender you could combine the different obj files and after that use perhaps "remove doubles" command in order to combine the parts to one solid reference.

Does this kind of approach have any chances to work? In general I need a reference model only, I think that if you want to have an exellent modeling in nurbs you cannot use that scanning in any other sense but as a reference only.

Please advice a newbie...
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Postby MagWeb » Fri Apr 18, 2008 10:14 pm

Hi OZON, welcome

using Meshlab is a common thing in this forum. Browsing the software section of this forum you will find a lot of hints to use it. Alligning with Meshlab works , see the Meshlab 1.1.1 topic, but for you have to handle many partial scans, the automatic modes of Shapefusion are much faster and easier to handle. You may try Shapefusion as well (only the saving function is disabled) and see the difference...

Hope that helps a little

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Postby Bongobat » Sat Apr 19, 2008 5:51 am

Hi OZON,

As Magweb said you have many options. I know of two free software programs for the PC that can align the meshes. Meshlab of course but also there is scanalyze http://www-graphics.stanford.edu/software/scanalyze/
I suppose you can align by hand with blender or other 3d apps but youll never get as close as the ICP algorithim can. It will save you time and frustration.

Fusion can be done with meshlab or http://www.cs.jhu.edu/~misha/Code/PoissonRecon/
http://www.cs.jhu.edu/~misha/Code/Reconstruct3D/
but you must convert your aligned mesh to npts. You can do this with 3d object converter http://web.axelero.hu/karpo/

You could just align the scans then draw nurbs on the surface if you program allows that. Maya has a snap to surface feature for that. I think the best way though would be to fuse at a high resolution and then use quadric edge collapse decimation in meshlab and then use the result as your reference. It would be clean and light this way.

Are NURBS absolutely necessary for you? If not you could always retopologize the mesh instead. I recomend Zbrush for this but thee are some freeware that can do it like gsculpt and blender.
DealExtreme red line laser, Microsoft Lifecam HD-5000
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