sgitopnm - convert a SGI image file to a portable anymap
2. SYNOPSIS ▲
sgitopnm [ -verbose ] [ -channel c ] [ SGIfile ]
3. DESCRIPTION ▲
Reads an SGI image file as input. Produces a PGM image for a 2-dimensional (1 channel) input file, and a PPM image for a 3-dimensional (3 or more channels) input file. Alternatively, produces a PGM image of any one of the channels in the input file.
4. OPTIONS ▲
Give some information about the SGI image file.
- -channel c
Extract channel c of the image as a PGM image. Without this option,
sgitopnm extracts the first 3 channels as a PPM image or, if the input has only 1 channel, extracts that as a PGM image, and if the input has 2 channels, fails.
5. REFERENCES ▲
SGI Image File Format documentation (draft v0.95) by Paul Haeberli ( ). Available via ftp at sgi.com:graphics/SGIIMAGESPEC.
6. SEE ALSO ▲
R pnm (5),
R pnmtosgi (1)
7. AUTHOR ▲
Copyright (C) 1994 by Ingo Wilken ( )