[Insight-users] Fusing two volumes, how-to?

[Siavash Khallaghi]

Hi Bob,

You can do this using itk filters in the following order:

1. Use an itk::HistogramMatchingImageFilter to do histogram equalization.
2. Use an itk::ResampleImageFilter to map one volume spatially to the other.
3. Use an itk::AddImageFilter to add the result of Step 2.
4. Use an itk::MultiplyByConstantImageFilter on the result of Step 3 to 
create the average (there may be a filter that combines Steps 3 and 4).

Siavash

On 17/09/2013 10:46 AM, Christopher Mullins wrote:
> Check out the TubeTK MergeAdjacentImages application [1].  Looks like 
> this will do several of the tasks you're looking for, and it's built 
> on top of ITK.
>
> [1] 
> https://github.com/TubeTK/TubeTK/tree/master/Applications/MergeAdjacentImages
>
>
> On Tue, Sep 17, 2013 at 1:41 PM, Robert Manzke <paradenker at gmail.com 
> <mailto:paradenker at gmail.com>> wrote:
>
>     Hi,
>
>     I want to create one single volume from two .mhd files.
>     I also have a 4x4 transformation matrix which maps one volume into
>     another.
>
>     So basically, I need an interpolator and a merge function, i.e.
>     average volume 1 and 2, to create a single volume.
>     The single volume will have a larger size than the two individual
>     ones, if the transform is not identity.
>
>     It can happen that both images have different gray level
>     histograms, so histogram matching before fusion is also desirable.
>
>     Can anyone lead me into the right direction how to do this with itk?
>     I would volunteer to post my final code for a small how-to, once
>     it works.
>
>     Thanks,
>     Bob
>
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> -- 
> Christopher Mullins
> R&D Engineer
> Kitware Inc.,
> 919.869.8871
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