[Insight-users] Grabbing output from the middle of a pipeline

[Jakub Bican]

Hi,
i will add one more note to this topic:

ITK User's Guide is excellent and was very useful for me since i started 
to use ITK up to now. But what i really missed is an explanatory chapter 
about pipeline itself, intended for ITK users. ITK developers find some 
info in last chapters about writing custom filter, but when i was 
writing my first ITK apps, i had to search doxygen docs and this mailing 
list to find some info about methods like DisconnectPipeline(), 
ResetPipeline(), UpdateLargestPossibleRegion(), etc. etc. Some of these 
methods are even only briefly documented in doxygen docs.

So it would be nice to have a consistent chapter regarding pipeline and 
related things.

Thanks,

	Jakub


Zachary Pincus napsal(a):
> Hello,
> 
> I'm wondering what the right way to grab an image from the middle or end 
> of a pipeline is, in such a way that re-running the pipeline doesn't 
> stomp on the image.
> 
> Say I have a pipeline of A->B->C. I'm pretty sure that the procedure to 
> get C's output so that subsequent pipeline updates don't write over it is:
> 
> out = C->GetOutput();
> out->DisconnectPipeline();
> C->ResetPipeline();
> 
> Though I am not sure if the last line is necessary. (Is it?)
> 
> Now, what if I want to grab and save B's output? Is it:
> 
> out = B->GetOutput();
> out->DisconnectPipeline();
> B->ResetPipeline();
> C->SetInput(B->GetOutput());
> 
> or am I missing something?
> 
> Thanks,
> 
> Zach
> 
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