try

http://www.wotsit.org/search.asp?s=graphics

a source of computer file formats.

james

----- Original Message -----
From: "Peter L. Peres" <plp@ACTCOM.CO.IL>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, March 20, 2002 12:14 PM
Subject: [OT]: Dissecting a .BMP file


> You NEED the relevant Microsoft documentation to make sense of BMP files
> because there are several dozens of BMP file formats. Decoding this on a
> micro is probably not a good idea. The bytes you saw at the start are a
> header and one or more color tables represented in one of several formats.
> Check the PPM (binary) and PGM formats for an easier format. Also the
> format used by the WAP protocol for sending images.
>
> Peter
>
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