[ITK-users] OutputFilter vs InputFilter in ObjectByObjectLabelMapFilter

[Bradley Lowekamp]

Just for additional reference, the SliceBySliceImageFilter behaves the same way with its filter parameters. I can't think of any others.

Brad


On Apr 21, 2015, at 6:50 AM, Gaetan Lehmann <gaetan.lehmann at gmail.com> wrote:

> Hi Arnaud,
> 
> The output filter is there to be able to apply a pipeline to each object, instead of just a single filter.
> When applying a single filter, the input and output filters are the same filter.
> When applying a pipeline, the input and output filters are not the same filters, maybe not even the same type. It is the responsibility of the user to connect the pipeline properly - this is why the output of the input filter is never used.
> 
> HTH,
> 
> Gaëtan
> 
> 
> 
> 2015-04-21 10:20 GMT+02:00 Arnaud Gelas <arnaudgelas at gmail.com>:
> Hi Gaetan,
> 
> I am spending quite some time on ObjectByObjectLabelMapFilter, and I don’t really understand conceptually the purpose of the OutputFilter vs the InputFilter. Can you give some explanations, please?
> 
> Looking at the code, it is bogus if the OutputFilter is different from the InputFilter (in such a case, the pipeline is not fully connected, i.e. the output of the InputFilter is not connected to any internal filter).
> 
> Thanks,
> Arnaud
> 
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