Digital BW, The Print

Well, the issue does come up from time to time, more likely for sheet film
users.  It's amazing how a booger will find its way into the film holder on
your best image.

There is a simpler way to spot. Go to filters>noise>dust and scratches, and
apply some setting you'd never use in a finished image, such as a 3-pixel
radius and threshhold of six or so.  Save as a snapshot and delete the dust
& scratches state in history.  Use a small soft brush in history brush
applied to the snapshot, and with a tablet you can clean up the image in no
time. 

> -----Original Message-----
> From: dealy663 [mailto:dealy663@...] 
> Sent: Monday, February 28, 2005 8:57 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] B/W Film scanning dust removal software??
> 
> 
> 
> Hi everyone, I've been a lurker in this group for a while, 
> but haven't posted much.
> 
> I'm looking for some opinions on a dust and scratch removal 
> program for scanned black and white film. I haven't been able 
> to find anything that was really helpful in this regard, and 
> got to thinking about creating something myself.
> 
> In some ways what I'm planning on developing would be similar 
> to the Polaroid Dust removal program, but would make use of 
> more sophisticated image analyis techniques. By this I mean, 
> it would take into consideration the amount of film grain 
> present (via the speed of the film and allowing the user to 
> specify a level of "graininess").
> The size of of the film grain with respect to the size of the 
> actual image on the negative would also figure into the 
> dust/scratch selection algorithms.
> 
> This program would not be smart enough for you to set a 
> couple of options and then presto you'd have something as 
> clean as a Digital ICE repaired piece of color film (That 
> seems unlikely for now). But would offer significantly less 
> work than going through your file with the clone-stamp tool 
> or the healing brush at 100% pixel resolution in Photoshop as 
> I've usually done with my B/W scans. This whole process 
> started after I spent about 2 hours cleaning up a scan of a 
> 35mm Tri-X neg with the PS CS healing brush. By manually 
> applying some of these techniques I was able to clean a 
> similarly dirty neg in about 15 minutes. I expect that I can 
> build a PS CS plugin to do this relatively simple stuff 
> without too much trouble. But the really cool benifit will 
> arise if my ideas regarding automated dust and scratch 
> identification pan out.
> 
> This probably wouldn't be of need to those who only have to 
> clean up 5 or 6 defects per image. I'm talking about really 
> messed up negs with over 100 defects per image!
> 
> So here are my questions:
> 
> 1. Would such a program would be of interest to you B/W 
> scanning types?
> 
> 2. If so would most of you be interested in a standalone 
> application, or a Photoshop plugin that would work with 
> 16-bit files? If I were to build a standalone program I would 
> only code it to work with TIFF files.
> 
> 3. What percentage of those interested are on Macs vs PCs?
> 
> Thanks, Derek
> 
> 
> 
> 
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