Netpbm format

A Netpbm format is any graphics format used and defined by the Netpbm project. The portable pixmap format (PPM), the portable graymap format (PGM) and the portable bitmap format (PBM) are image file formats designed to be easily exchanged between platforms. They are also sometimes referred to collectively as the portable anymap format (PNM), not to be confused with the related portable arbitrary map format.

History

The PBM format was invented by Jef Poskanzer in the 1980s as a format that allowed monochrome bitmaps to be transmitted within an email message as plain ASCII text, allowing it to survive any changes in text formatting. Poskanzer developed the first library of tools to handle the PBM format, Pbmplus, released in 1988. It mainly contained tools to convert between PBM and other graphics formats. By the end of 1988, Poskanzer had developed the PGM and PPM formats along with their associated tools and added them to Pbmplus. The final release of Pbmplus was December 10, 1991.

PGM

PGM may refer to:

Math & Science

Computers

Military and navy

Music

Other

USS PGM-6

USS PGM-6 was a PGM-1 class motor gunboat that served in the United States Navy during World War II. She was originally laid down as a SC-497 class submarine chaser on 6 February 1943 by the Mathis Yacht Building Company in Camden, New Jersey and launched on 20 May 1943. She was commissioned as USS SC-1071 on 8 June 1943. She was later converted to a PGM-1 class motor gunboat and renamed PGM-6 on 10 December 1943. During the war she took part in the Pacific Theater. After the war she was transferred to the Foreign Liquidations Commission on 7 May 1947. Her exact fate is unknown.

References