Archived posting to the Leica Users Group, 2001/05/14

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Subject: Re: [Leica] Cleaning slides for scanning
From: Mark Rabiner <mark@rabiner.cncoffice.com>
Date: Mon, 14 May 2001 19:56:45 -0700
References: <001301c0dce0$b2355ac0$4329b3d1@oemcomputer>

><Snip>  It is my understanding that Digital ICE
> works by "seeing" dust particles through a fourth channel of infrared light
> projected in a film scanner - the other three channels being RGB.  The dye
> layers and film base in color or chromomeric film are invisible to the IR
> channel, so the IR channel "sees" only dust.  Algorithms are used to paint
> the images in the places where dust appears.  Silver grains in B&W film are
> opaque to the IR channel resulting in a block up of the highlight and
> midtone areas of B&W film with the IR scan.
> 
> Digital ICE has worked fantastically on my color images.  I wish it did work
> on B&W.
> 
> Douglas F. Landrum


I'm glad we've got more people on the Lug who can really help us with our scanning!
Thanks Douglas! You're  at the top of my list when it comes to who to ask on
this stuff.
Feel free to ask me about Nuclear Science and the meaning of life. 
I'm clueless on both!


Mark Rabiner

Portland, Oregon
USA

http://www.rabiner.cncoffice.com/

In reply to: Message from "Douglas Landrum" <dflandrum@earthlink.net> (Re: [Leica] Cleaning slides for scanning)