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- Newsgroups: comp.graphics
- Path: sparky!uunet!gatech!darwin.sura.net!spool.mu.edu!umn.edu!csus.edu!netcom.com!ampac
- From: ampac@netcom.com (Marc Kulla)
- Subject: Image Format Gurus...
- Message-ID: <1992Dec29.223950.21680@netcom.com>
- Organization: AmPac International
- Date: Tue, 29 Dec 1992 22:39:50 GMT
- Lines: 31
-
- Help! I'm trying to decipher an image format. I have a handful of the
- images, and it appears that it looks like this:
-
- 32 byte header - contains width/height and some number that is
- 'almost' the byte count of the file (minus 300-500 bytes).
-
- Data...
-
- The 'number' in the header could be a pointer to an overview or it could
- be the byte count of the compressed data. Something to that effect. I
- believe that the image file does have an overview.
-
- The compressed data is a bit odd. I don't think it's G3 or G4. It has
- quite alot of 0D 0A (carriage return/line feeds), and I'm sure it's more
- than a coincidence. The beginning of the file and often times in the middle
- of the files often contain rows and rows of the same byte sequence followed
- by 0D 0A.
-
- The images are black/white compressed image files. That's it.
-
- Any great ideas? I've been trying all the decompression algorithms that I
- know, and I even tried viewing the file as raw, but it's nowhere near large
- enough. It's an 8 1/2 by 11 page (1728 x 2240) and the file sizes are in
- the 30K to 90K range.
-
- Thanks for the help.
-
- Marc
- e-mail: ampac@netcom.com
-
-
-