Message-Id: <mailto:199505092003.PAA06497@library.wustl.edu> Date: Tue, 9 May 1995 15:02:25 -0600 From: Alan Newman <mailto:anewman@ARTIC.EDU> Subject: Re: SCANNING RESOLUTION To: Multiple recipients of list IMAGELIB
>Alan Newman writes:
>
>> It is always best to scan at the highest practical resolution. I would put
>> my money into high res scans, digital storage and an image database and
>> forget the microfilm.
>
>In a recent project that VTLS worked on that involved several million
>images, our tests showed that the scan at 400 dpi was actually worse
>than at 300dpi because it was picking up too much noise from the
>texture of the paper at 400 dpi and not as much at 300 dpi.
>
>I too would put my money on scans (proper resolution - not
>necessarily high), digital storage and image databases.
>Vinod Chachra
>President VTLS Inc.
>Phone: 703-231-3605
>Fax: 703-231-3648
I believe the tests you refer to are probably the exception rather than the rule. One can always resample down from higher res., but not up. You may be losing some information along with the texture. I think you should publish your results.
Thanks, Alan
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