Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!clyde.concordia.ca!NSTN.NS.CA!Iris1.UCIS.Dal.Ca!marinell
From: marinell@Iris1.UCIS.Dal.Ca (Kevin Marinelli)
Newsgroups: comp.sys.sgi
Subject: Re: Iris image file -> color mac format request
Message-ID: <1990Nov22.142724.10720@nstn.ns.ca>
Date: 22 Nov 90 14:27:24 GMT
References: <1990Nov20.215250.4192@ux1.cso.uiuc.edu>
Sender: news@nstn.ns.ca
Organization: Dalhousie University
Lines: 36

In article <1990Nov20.215250.4192@ux1.cso.uiuc.edu> kahn@uxh.cso.uiuc.edu (Scott Kahn) writes:
>This is a request for an image conversion routine that I either
>missed or has yet to be posted. I would like to transport full-
>screen IRIS rgb files to the mac; using the Macpaint conversion
>routine is inadequate for images > 576x720 pixels in size. I have
>used "izoom" to shrink the images but the results were extremely
>disappointing.
>
>Does a conversion exist to convert IRIS "rgb" or "bw" images to
>one of the Macintosh color formats, eg, PixelPaint or Canvas?
>
>Thanks!!

I use the following method, which works o.k., but not perfect:

1.  Convert the SGI image into a GIF image. (I use PBMPLUS or Utah Raster
	Toolkit to do this.)  Available via anonymnous FTP from this host
	(Iris1.UCIS.Dal.Ca) in the /pub/ftp/sgi  directory.

3. Transfer the file to your Mac.

4. Convert the GIf image into PICT II format using GIFFER.
	Available via anonymous FTP from Sumex-Aim.Stanford.Edu in the
	/info-mac/art/gif directory.

5. Use the image in your favorite software.

  The major drawback in this method is that the image gets converted into
an 8 bit image.  For most colour Macs this is not a problem, but if you 
need a 24 bit image this method is not sufficient.

For 24 bit colour, it might be best to convert the image into a 24 bit
colour TIFF image. (I do not know how to do this yet.


Kevin Marinelli