tsatsoul@kuhub.cc.ukans.edu (09/26/90)
I need to display bw, 8-bit images on an X11 color server. Can anybody tell me if there is a program that would do so? I know of a program that displays gif images on color servers, but how do I turn a file of integers into a gif file? Thanks, --- Costas Tsatsoulis tsatsoul%turing@kuhub.cc.ukans.edu tsatsoul@kuhub.cc.ukans.edu tsatsoul@UKANVAX.BITNET
jimf@SABER.COM (09/26/90)
|I need to display bw, 8-bit images on an X11 color server. Can anybody tell me |if there is a program that would do so? I know of a program that displays gif |images on color servers, but how do I turn a file of integers into a gif |file? I don't know what you mean by "a file of integers" but my xloadimage program, now in version 2.0, can display a wide variety of images on a wide variety of servers. GIF is one of the supported image formats. If you want to convert into a graphics format, I'd suggest not using GIF. The format is complex enough that it's a pain to write a good dumper for. For 8-bit images the Sun rasterfile (standard, not RLE) is really easy to create and work with. A sample loader that defines the Sun format is in sunraster.c in the xloadimage sources. While the Sun format doesn't usually use compression as does GIF, I've found that using it in conjunction with `compress' creates a compact image file which is easy to deal with. Somewhere I have a dumper for this format as well, I might be able to dig it up given a little time. If you want xloadimage it can be had by anonymous ftp from expo.lcs.mit.edu in /contrib/xloadimage.2.0.tar.Z. It will appear on comp.sources.x in the near future. If you're unable to get at either of those sources I can email it to you, but beware that it's 375k of source in 9 shar files. Happy hacking, jim frost saber software jimf@saber.com
dbrooks@osf.org (David Brooks) (09/28/90)
In article <25775.26ff771d@kuhub.cc.ukans.edu>, tsatsoul@kuhub.cc.ukans.edu writes: |> |> I need to display bw, 8-bit images on an X11 color server. Can anybody tell |> me if there is a program that would do so? I know of a program that |> displays gif images on color servers, but how do I turn a file of integers |> into a gif file? As is usual with questinos like this, the answer is "use Jef Poskansker's excellent PBMPLUS package. We'll assume you have a <w> x <h> picture, and have w*h integers between 0 (black) and <m> (white) in the usual L-R, T-B ordering. If you don't hack at it until you do. Edit such a file so that the first three lines read: P2 <w> <h> <m> Now say: ppmtogif file-with-integers > file.gif Magic. -- David Brooks dbrooks@osf.org Systems Engineering, OSF uunet!osf.org!dbrooks "A Loaf of Bread, a Jug of Wine, and Six Spades Redoubled -- Omar somebody.