1. NAME

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

-verbose

    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 ()