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Info-Graphics Digest	Sun Apr  5 03:00:13 PST 1987

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Today's Topics:

  MOVIE.BYU
  Questions

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Date: Fri, 3 Apr 87 13:40:12 EST
From: "Kathleen L. Zimmerman" (IBD) <kathy@BRL.ARPA>
Subject:  MOVIE.BYU

     We have a software interface for a Tektronix 4113B for MOVIE.BYU.
Unfortunately, we don't seem to have the correct libraries to make the
thing useful.  The missing library subroutines are
                grstrt             txade
                txqual             window
                vwport             txtclr
                move               clrmap
                setpvw             setpbm
                cmd1x              int1x
                cmopen             grstop
                cmclos             text
                pxlwrt             end1x.
If you recognize the library and can tell me how to get a copy, please 
send me a message on the net.   These routines are not in the PLOT-10
library (level 3.0).
                                Kathy Zimmerman
                                Ballistic Research Laboratory
                                Aberdeen Proving Ground, MD  21005-5066
                                AV 298-6098  or (301) 278-6098

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Date:     Mon, 23 Mar 87  17:51:29 MST
From: ZSYJKAA%WYOCDC1.BITNET@wiscvm.wisc.edu (Jim Kirkpatrick 307 766-5303)
Subject:  Questions

Hello.  I was wondering if you might be able to help me with a couple
of questions.

  1.  We have a III FR80/A color microfilmer system.  We normally use
      it via our CDC mainframes by way of 1600bpi mag tape.  What we
      would like to do is be able to process files from a MacIntosh
      (Macpaint, Macdraw, etc.) and/or other micro systems, transfer
      them to our mainframes (using CDC's CONNECT product, which can
      transfer a micro file in straight binary), then translate the
      micro data format to micorfilmer format.  The problem is, I
      haven't been able to locate any description of how the micro
      files are formatted.  I presume they are in some sort of compacted
      raster format but it's not obvious looking at dumps.  Do you or
      any people on the list know something about this?
  2.  Again regarding the microfilmer, one of the tricky aspects is
      performing accurate color correction (a.k.a "gamma" correction).
      I have a reasonably good scheme in place but it presumes the primary
      colors (RGB) are independent of each other, and that's not the case.
      but it involves taking about 300 measurements on a densitometer
      then doing a 3-dimensional curve fit for each primary.  Was wondering
      if you or folks on the list have better solutions, or can just point
      me to published articles describing full-blown gamma correction?

		ZSYJKAA%WYOCDC1.BITNET@wiscvm.wisc.edu

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