Re: information contained in surrogates

From: Guenter Waibel (guenter@UCLINK4.BERKELEY.EDU)
Date: Wed May 30 2001 - 13:23:01 CDT

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    Message-Id: <200105301823.LAA22598@dns.ccit.arizona.edu>
Date:         Wed, 30 May 2001 11:23:01 -0700
From: Guenter Waibel <mailto:guenter@UCLINK4.BERKELEY.EDU>
Subject:      Re: information contained in surrogates
To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU

    <pre> Hi folks,

    just wanted to say thanks for everybody for the great discussion on the data in image surrogates. It'll take me a little while to digest, and I've also privately e-mailed some people in the community who may no be subsribed to IMAGELIB. I'll keep you posted if anything of interest turns up.

    If you do the math on the watershed scanning resolutions Nathan Prichard suggests (via Mary Winter), this is what you come up with for filesize for 24 bit files:

    35 mm (35x24mm or 1.38 x 0.94 inches) mailto:@ 4000ppi ~ 60 MB 120 (60x 45mm or 2.36 x 1.77 inches) mailto:@ 3000ppi ~ 108 MB 4x5 (4x5 inches) mailto:@ 2000ppi ~ 230 MB

    Again, the formula: Resolution(ppi) x Resolution(ppi) x Width
    (inches) x Height (inches) x bits per sample (24) gives you the bits in the image; divide by 8192 for kilobyte; divide further by 1024 for MB. Hope I punched in all the right numbers, but the results look good to me :-)

    Thanks again, everybody!

    Guenter 

    --
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Guenter Waibel
Berkeley Art Museum & Pacific Film Archive
Digital Media Developer http://www.bampfa.berkeley.edu/
Digital Imaging SIG Chair, MCN http://www.mcn.edu/visig_subscribe.taf
mailto:guenter@uclink4.berkeley.edu
Phone   510-643-8655
Fax     510-642-4889
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    </pre>

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