[Insight-users] itk Data Representation vs. Spatial Objects

[Mark Foskey]

You want to use an itk::Mesh.  Representing points, lines, and polygons 
(with possible associated data such as normals) is exactly the sort of 
thing Meshes are for.

By contrast, the purpose of spatial objects is to provide a common API 
for images and other things that represent objects in space.  This way 
you can register a blood vessel model with a blood vessel image.  There 
is an ImageSpatialObject that wraps an itk::Image, but there is not yet 
a MeshSpatialObject that wraps a Mesh.  We hope to eventually implement 
one, but even when we do, you would still be able to work with the 
underlying mesh.

Sergio Andrés wrote:

> Hi all,
> 
> I have read first chapters of ITKSoftwareGuide about 
> Data Representation Objects and Spatial Objects.
> 
> I have to create (and use) a data structure to
> represent
> geometry data (points, lines, poligons, ...), using 
> ITK library classes. But I don't know what type of
> data
> objects I should use.
> 
> I would like to access to points coordinates, to
> compute
> point normals, to represent points, lines, polygons,
> to store connectivity info.,.. etc.
> 
> Have you any suggestion ??
> 
> 
> Thanks a lot.
> 
> Sergio.
> 
> 
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-- 
Mark Foskey    (919) 843-5436  Computer-Aided Diagnosis and Display Lab
mark_foskey at unc . edu            Department of Radiology, CB 7515, UNC
http://www . cs . unc . edu/~foskey  Chapel Hill, NC  27599-7515