Re: [vmtk-users] Combineing level sets

[adrianrh <adr...@st...>]

Hello Luca,

Thank you for the answer, it is helpful. I actually need to combine 
images from the same geometry and from different geometries at different 
points in my work. I have some higher quality MR scans that are on a 
smaller domain and would like to understand how to combine it with a 
lower quality image of a bigger domain. So getting some more details 
would really be nice.



Best regards Adrian

On 2013-03-29 13:53, Luca Antiga wrote:
> Hello Adrian,
> 
>  there is a way of combining level set files. After all, they are all
> image files, so here's how you do it:
> 
> in case they are all produced from the same input image (i.e. they
> have the same geometry), you can go
> vmtkimagecompose -ifile ls1.vti -i2file ls2.vti -ofile ls_combined.vti
> If you have more than 2, you'll have to call another vmtkimagecompose
> on the result of the former;
> 
> in case they are produced from different input images (hence they
> have different spatial extents) you'll first have to resample them 
> onto
> a common grid using vmtkimagereslice; let me know if this is your case
> and I'll provide you with more details.
> 
> Best,
> 
> Luca
> 
> On Mar 25, 2013, at 3:08 PM, adrianrh wrote:
> 
>> Hi!
>> 
>> I am working on segmenting water in the brain for simula research
>> laboratory.
>> 
>> I am using the command
>> "vmtklevelsetsegmentation -ifile image_volume_voi.vti -levelsetsfile
>> level_sets.vti -ofile level_setsOut.vti"
>> to continue working on a project.
>> 
>> what I would really like to be able to do is to make multiple 
>> levelsets
>> files and then combine them. Like this;
>> 
>> vmtklevelsetsegmentation -ifile image_volume_voi.vti -levelsetsfile
>> level_sets.vti -levelsetsfile level_sets2.vti -ofile 
>> level_setsOut.vti
>> 
>> is it possible to do this in the vmtk software? or possible to add 
>> it?
>> 
>> Adrian Hope
>> 
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