Message-Id: <199801151908.MAA53068@dns.ccit.arizona.edu> Date: Thu, 15 Jan 1998 14:04:46 -0500 From: Peter Nelson <mailto:pnelson@MTHOLYOKE.EDU> Subject: Re: [DIGLIBNS:585] Need help in eliminating "bleed-through" To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU
Many people have suggested using a dark sheet of paper behind the document during scanning. I should have made clear that we are already doing this (the inside of the scanner cover is very black).Peter Nelson
On Thu, 15 Jan 1998, Kimberly Parker wrote:
> Date: Thu, 15 Jan 1998 13:54:11 -0500
> From: Kimberly Parker <mailto:kimberly.parker@yale.edu>
> To: mailto:pnelson@mtholyoke.edu
> Subject: Re: [DIGLIBNS:585] Need help in eliminating "bleed-through"
>
> Peter, should we assume that you have attempted placing a dark background
> behind the manuscript during scanning? It may reduce, although not solve,
> the bleedthrough.
> ----------------------------------------------------------
> Kimberly Parker
> Electronic Publishing and Collections Librarian
> Yale University Library
> 130 Wall Street Voice (203) 432-0067
> P.O. Box 208240 Fax (203) 432-8527
> New Haven, CT 06520-8240 mailto:kimberly.parker@yale.edu
> ----------------------------------------------------------
>
> At 09:43 AM 1/15/98 -0800, you wrote:
> >We are using a flatbed scanner and Photoshop 4.0 to create JPEG images of
> >handwritten manuscripts, and recently encountered a series of documents
> >written in dark ink on very thin onionskin paper. Consequently there is a
> >bad "bleed-through" problem, i.e. writing on the verso can plainly be
> >seen. This results in nearly illegible text. Does anyone on this list
> >know of any trick, such as a mask or filter, that can reduce or eliminate
> >this problem? I should add that the original mss. present the same
> >problem, so any solution would in effect be improving on the visual
> >quality of the originals.
> >
> >+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> >Peter Nelson mailto:pnelson@mtholyoke.edu
> >Five College Archives Digital Access Project
> >c/o Mount Holyoke College Archives http://clio.fivecolleges.edu
> >South Hadley, MA 01075 (413) 538-3020
> > Don't anthropomorphize computers. They don't like it.
> >+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> >
> >
>