Netpbm
Encyclopedia : N : NE : NET : Netpbm
Netpbm is an open source package of graphics programs and a programming library, used mainly in the Unix world. It is a highly portable package, working under many Unix platforms, Windows, Mac OS X, VMS, Amiga OS and others and is included in all major open source Unix-like operating system distributions. As of February 24, 2006, the latest beta version is 10.31 (released December 23, 2005), and the latest stable version is 10.26.25 (released February 19, 2006).
Netpbm defines a set of graphics formats called the netpbm formats:
- The portable pixmap/greymap/bitmap formats PPM, PGM, PBM. They are collectively referred to as PNM.
- The more sophisticated PAM format.
The Netpbm programs are frequently used as intermediates to convert between obscure formats. For instance, there may be no tool to convert an X11 window dump (XWD format) directly to a Macintosh PICT file, but by running xwdtopnm, then ppmtopict, this can be achieved. (Tools which say that they output PNM may output PPM, PGM or PBM. Tools importing PNM will read any of the three formats.)
Netpbm grew out of the old Pbmplus package, which had its last release on December 10, 1991. The name came from the program developers collaborating over the Internet, which was notable at the time. (The NetBSD operating system and the game NetHack got their names similarly.)
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