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[Seg3D] Re: Re: Accessing NRRD data as multiresolution array

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  • From: Ramón Casero Cañas <>
  • To:
  • Subject: [Seg3D] Re: Re: Accessing NRRD data as multiresolution array
  • Date: Mon, 26 Oct 2009 22:29:26 +0000

Michael Callahan wrote:
index_to_offset in VolumeOps.h sort of does this except that the
interface is different (vector<int>).  I recommend you write your own
small function to do the same thing with the interface you want.

Hi Michael,

Thanks very much for the advice.

I looked into VolumeOps::index_to_offset() (I hadn't realised it was in the .h file, because it's implicitly inline), but in the end I think it was easier to first use VolumeOps::nrrd_set_value_unmasked(), because you can just give it the point indices obtained from NrrdVolume::world_to_index().

So now I can segment the spline contour, although with gaps between the spline sampling points. I'm working on connecting those, and will send the result when it's working.

Best regards,


Ramón Casero Cañas, DPhil

Computational Biology, Computing Laboratory
University of Oxford
Wolfson Building, Parks Rd
Oxford OX1 3QD

tlf     +44 (0) 1865 610807

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