[Insight-developers] in place filters

[Henning Meyer]

Hello,

when working with large volumes it's quite annoying that itk filters
reserve an extra memory block to store the filtered image.
Would'nt it be nice to have filters which work in place? This idea
could be combined with the IteratorTraits idea and sparse volumes very
nicely. And if used correctly filter could still be chained. However,
I think one would loose the flexibility to change filters at runtime -
but honestly - who is doing this anyway?

Henning