[vtkusers] how to 3D surface stitching?

[Dongqing Chen]

Hello David:

   Thanks for your info. It works well using the two examples you provided. Now I may ask do you know how to convert 3D height map (generated from 2D image using shape from shading) to the XML file?

   Thank you. 

Best Wishes,
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Dongqing Chen, Ph.D.
Computer Vision & Image Processing (CVIP) Lab
Department of Electrical & Computer Engineering
Speed School of Engineering
University of Louisville
Louisville, KY, 40292
U.S.A
email: dqchen at cvip.louisville.edu
phone: 1-502-852-2789 (Lab)
             1-502-852-6130 (Office)
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  ----- Original Message ----- 
  From: David Doria 
  Cc: vtkusers at vtk.org 
  Sent: Sunday, October 11, 2009 8:00 AM
  Subject: Re: [vtkusers] how to 3D surface stitching?

  Dongqing,

  I don't think you will get the results you are looking for with that method. It is assuming the meshes are strict subsets of each other. I'm assuming you are looking for a nice manifold surface output. I put together an example here: http://www.rpi.edu/~doriad/VTK_List/SurfaceStitching/

  There are two surfaces which are overlapping synthetic LiDAR scans of a discrete sphere. Using Stitching.cpp I took SphereScan1.vtp and SphereScan2.vtp and produced Stitched.vtp. You can see by looking at Stitched.vtp that the two surfaces are simply naively combined rather than "stitched".

  I think this is quite a useful thing to be able to do (namely to create 3d models from real life objects using real LiDAR scans). There are some volumetric methods for surface stitching (http://www-graphics.stanford.edu/software/vrip/). I've been looking at trying to get something like this into VTK but it's quite a project. Has anyone done anything similar to this with VTK and care to share/contribute it?

  Thanks,

  David
    



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