[Insight-users] Question regarding BSplineScatteredDataPointSetToImageFilter

[Nicholas Tustison]

Okay, I'm assuming that these points correspond in 
time, correct?  For example, point 937 in time point 0
corresponds to point 937 in time point 1, 2, 3, ...133,
right?  



On Jan 3, 2012, at 11:55 AM, Kerstin Müller wrote:

> Hi,
> 
> the basic problem I wanna solve:
> 
> I'll have scattered points in 3D which vary over time, they describe a motion of a surface over time. They are not ordered in x-y-and z-dimension.
> Now I want to represent that motion by BSplines in order to generate a dense motion vector field defined on specific 3D voxel positions.
> I'll have 133 timesteps and ~960 sample points in each time step. Now I want to fit the BSpline to it and resample it.
> 
> All the best,
> 
> Kerstin
> 
> 2012/1/3 Nicholas Tustison <ntustison at gmail.com>
> In that case, let's start with the basic problem set-up.
> Before, you described your problem as follows:
> 
> 
>>> I'm using the BSplineScatteredDataPointSetToImageFilter from the Insight Journal. However,
>>> I cannot find the correct parameter in order to make the filter work and does not crash during the evaluation.
>>> I'll have scattered 3-D points over time and I want to fit a 4-D Bspline field to that points. Afterwards I want to evaluate the Bspline on a dense volume grid to one time step.
> 
> 
> What do these scattered 3D+t points represent?  
> Is it a curve, a time-varying scalar field, or something
> else?
> 
> 

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