Cosmetics
Slightly reduced memory footprint of rtkTotalVariationDenoisingBPDQ
Reduced again the memory footprint of rtkTotalVariationDenoisingBPDQ.
Modified the BackwardDifferenceDivergenceImageFilter to allow streaming.
Streaming proved useless to further decrease the memory footprint of
rtkTotalVariationDenoisingBPDQ, though.
Setting some filters inplace in rtkTotalVariationDenoisingBPDQ caused
the filter to recompute the same image many times. Reverted to out of
place execution for these filters.
Modified gradient and divergence to use covariant vectors that store
the gradient values only for dimensions along which it is actually
computed. Modified the depending filters accordingly.
Removed method SetROI from rtkFourDROOSTERConeBeamReconstructionFilter,
as SetROIInput is used instead.
Reduced the memory footprint of 4DROOSTER as much as I could
Merge branch 'master' of github.com:SimonRit/RTK