BitMaP, noncompressed image file format frequent in the Microsoft Windows community. 1..8 bits per pixel.
[anyone have a web address for info on bmp format?]
RS has http://www.google.com/ that can bring forth many, in this case for "bmp format description":
strimj segmentation has a reader strimj::fromBMP2 for binary .BMP files (1 bit per pixel).
In the 1980s, XBM files in the Unix/X-world also often had the .bmp extension, but this is a whole different format, text files in C syntax to describe binary images as sort of a hexdump.
See bmp extension - Img - bmp2ppm
Elsewhere, BMP is used to abbreviate the Basic Multilingual Plane - the Unicodes from U+0000 to U+FFFD that Tcl/Tk support. [L1 ]
Here is a pure-tcl BMP reader/writer (updated 2007-05-15).