Message-Id: <199710070012.RAA42350@dns.ccit.arizona.edu> Date: Mon, 6 Oct 1997 19:12:43 -0600 From: Anne Troy <mailto:troyx003@MAROON.TC.UMN.EDU> Subject: Re: Digitization standards To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU
Dear ImageLIB,I, too, would like to know this. My main question is: isn't d.p.i (output resolution) irrelevant as to whether something is of archival quality? I would think the pixel heighth and width, and the scale, that you scan something in, are more relevant because (at least I think) those are the items that determine the amount of information that is going to go into the scanned file. I've been told to go by Kodak Photo CD standards (base, base 64, etc.), without using their compression modes. Thanks! >
>Has there been a standard established to define what the d.p.i.
>for a "preservation quality" b&w photographic image should be if
>digitized in 256 grays? I'm specifically asking about an uncompressed
>archival version of the scanned file. I've read suggestions which
>range from 300 to 600 d.p.i. and I'm interested in what others
>are doing, specifically, those that do their scanning in-house.
____________________________________
Anne Troy User Services Specialist College of Architecture and Landscape Architecture University of Minnesota 612.624.4080 mailto:troyx003@maroon.tc.umn.edu