[ITK] [ITK-users] OutputFilter vs InputFilter in ObjectByObjectLabelMapFilter

[Gaetan Lehmann]

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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