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Filmscanners mailing list archive (filmscanners@halftone.co.uk)

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RE: filmscanners: oops! Digital ICE, Digital ROC, Kodachrome

>It is important to try it on your negatives.

Since when did Kodak make Kodachrome negatives?

Sorry, I should have proofed better.


-----Original Message-----
From: Jack Phipps 
Sent: Monday, May 07, 2001 11:17 AM
To: 'filmscanners@halftone.co.uk'
Subject: filmscanners: Digital ICE, Digital ROC, Kodachrome

Digital ROC should have no effect on defect removal and we specify that
Digital ICE should be run first. Also, a note on Kodachrome; Digital ICE
will work quite effectively on many (but not all) Kodachrome images. It is
important to try it on your negatives. We may have given the impression in
the past that it doesn't work because we feel it is important not to
misrepresent our product. We'd rather say it doesn't work on Kodachrome at
all then to imply it always works.

There might be some feedback from this user community on the effectiveness
of Digital ICE on Kodachrome.

Jack Phipps
Applied Science fiction.

-----Original Message-----
From: Shough, Dean [mailto:dean.shough@lmco.com]
Sent: Monday, May 07, 2001 7:54 AM
To: 'filmscanners@halftone.co.uk'
Subject: RE: filmscanners: VueScan 7.0.18 Available

> What's new in version 7.0.18
>   * Changed processing to do infrared dust removal
>     prior to restoring colors

I know that your algorithms are different from what ASF does with ROC and
ICE, but it looks like ASF does their ROC first, and then uses information
from ROC to improve GEM.  Part of the ROC algorithm identifies what portion
of each pixel belongs to each dye layer.  When the scan includes  IR, this
information can be used to help separate the RGBI layers.  Using this should
help isolate dust from actual image content.

Does anybody have a Nikon scanner and could they check to see if ROC+ICE
actually does better than just ICE for removal of dust?  Or is this just
something that was mentioned in the patents and never implemented in the
commercial software?  If fully implemented, it might allow reasonable dust
removal from Kodachrome slides.


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