Filmscanners mailing list archive (firstname.lastname@example.org)
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: filmscanners: GEM, ROC compared to Vuescan
John Matturri writes ...
> Related: why in general does Ice-based dust removal
> soften the image.
> The purpose of the IR channel is to identify the particular
> spots that are dust / scratches. Shouldn't
> the software only affect those areas
> leaving the rest of the image alone and sharp?
The IR channel is not strictly speaking a picture of dust/defects ...
it also contains a component if the image itself. The ASF trademarked
ICE algoritm apparently has a problem with this weakness of the IR
channel (comments?, Jack) ... whereas Ed's Vuescan algoritm does not.