[Camino-users] resample fibers

[Philip A Cook]

Hi,

Currently you can downsample the fibers themselves with tractshredder, but there's no way to downsample the points on an individual fiber, other than tracking with a larger step size. 

The fiber format is fairly simple though. It is 32-bit float, big-endian, and contains one fiber after the other in the format

 [<N>, <seed point index>, <x_1>, <y_1>, <z_1>,...,<x_N>, <y_N>, <z_N>]

where N is the number of points. You can edit this freely, you would just need to keep track of N and the seed point index of the output track.

On Aug 2, 2012, at 7:56 AM, Peter Neher wrote:

> Dear all,
> 
> is it possible to resample the number of points on a fiber after the tracking process? The fibers are sampled way too high so that the conversion step to vtk needs too much memory and aborts. Probably every tenth fiber point would be enough.
> 
> Best
> Peter
> 
> -- 
> Dipl.-Inform. Peter Neher
> German Cancer Research Centre
> (DKFZ, Deutsches Krebsforschungszentrum in der Helmholtz-Gemeinschaft, Stiftung des öffentlichen Rechts)
> Division of Medical and Biological Informatics
> Im Neuenheimer Feld 280, D-69120 Heidelberg
> 
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