Message-Id: <199801191641.JAA65122@dns.ccit.arizona.edu> Date: Mon, 19 Jan 1998 17:39:08 +0100 From: Emil Levine <mailto:E.Levine@IAEA.ORG> Subject: Need help in eliminating "bleed-through" To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU
The following comment is from Herbert Loserl, UN/IAEA/Vienna, who has been doing this for 30 years.Emil Levine Head, INIS Clearinghouse UN/IAEA/INIS PO Box 100 Vienna Austria A1400 43-1-2060-22880/29882 fax mailto:e.levine@iaea.org
>----------
>From: LOSERL, Herbert
>Sent: Monday, 19 January 1998 17:32
>To: LEVINE, Emil
>Subject: RE: Need help in eliminating "bleed-through"
>
>That's the only and best way to minimize the show-through.
>The same method,we were using for microfilming also.
>
>herb
>
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>From: LEVINE, Emil
>Sent: Monday, January 19, 1998 10:02 AM
>To: LOSERL, Herbert; BINDER, Liselotte; CALMA, Dean; REYNAUD PULIDO, Yves
>Subject: FW: Need help in eliminating "bleed-through"
>
>
>
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>From: Robert Hershoff[SMTP:mailto:hershoff@bird.library.arizona.edu]
>Sent: Thursday, 15 January 1998 20:22
>To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU
>Subject: Re: Need help in eliminating "bleed-through"
>
>January 15, 1998
>
>The combination of a dark backing paper (previously mentioned by
>Peter Nelson) and some judicious adjustment of the scanner controls
>for brightness and contrast should make it possible to minimize the
>show-through.
>
>Please let us know how this works out.
>
>Regards,
>
>Robert
>
>*****************************************************
>Robert Hershoff / The University of Arizona Library
>Main Library Room A304 / 1510 E. University Boulevard
>P.O. Box 210055 / Tucson, AZ 85721-0055
>voice (520) 626-7415 / fax (520) 621-9733
>e-mail: mailto:hershoff@bird.library.arizona.edu
>*****************************************************
>
>On Thu, 15 Jan 1998, Patricia Bruce wrote:
>
>> Try placing a dark piece of paper behind the scanned object. Black is
>> recommended, but you may need to try other dark colors, depending upon the
>> color of the ink.
>> "Peter Nelson" <mailto:pnelson@MTHOLYOKE.EDU> Wrote:
>> |
>> | Please excuse cross-posting.
>> |
>> | 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.
>> | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
>> | +-+-+-+-+-+
>> |
>>
>
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