[vtkusers] Re: Fill contours with Pixels

[Goodwin Lawlor]

Mike Jackson wrote:
> I have a 3D triangle mesh that I am trying to close the "Holes" on. This 
> mesh is pretty complex and although I have searched the archives I have 
> not found anything that has worked out. The main problem being that a 
> "contour" line can traverse 2 or more planes.
>    So what I was thinking was to extract the contour loops just at the 
> boundary surface. This gives nice loops. Now if I could somehow "fill" 
> those loops with solid pixels, convert the whole thing to a voxel 
> volume, I believe I have a way to "extract surface" of the new voxel 
> volume, triangulate it, than append and merge to the original mesh. I 
> have used this type of technique before with good success. I just need 
> to fill the interiors of loops with a solid color.
>   Are there any filters that might do this? Anything in ITK? I'll ask on 
> that list next.
> 
> Thanks
> --Mike Jackson   Senior Research Engineer
> Innovative Management & Technology Services

Hi Mike,

There is a very simple class that encapsulates a pipeline that 
triangulates boundary loops here: 
http://www.bioengineering-research.com/vtk/vtkTesselateBoundaryLoops.htm

Just FYI, the Standord Computer Graphics Lab has much more sophisticated 
stuff here:
http://graphics.stanford.edu/software/volfill/

hth

Goodwin