sgitopnm



Sgitopnm User Manual(0)                                Sgitopnm User Manual(0)




NAME

       sgitopnm - convert a SGI image file to PNM



SYNOPSIS

       sgitopnm

       [-verbose]

       [-channel c]

       [SGIfile]



DESCRIPTION

       This program is part of Netpbm(1).

       sgitopnm  reads an SGI image file as input and produces a PGM image for
       a 2-dimensional (1 channel) input file, and a PPM image for a  3-dimen-
       sional (3 or more channels) input file.

       Alternatively, the program produces a PGM image of any one of the chan-
       nels in the input file.



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.





REFERENCES

       SGI  Image  File  Format  documentation  (draft v0.95) by Paul Haeberli
       (paul@sgi.com).  Available via ftp at sgi.com:graphics/SGIIMAGESPEC.



SEE ALSO

       pnm(1), pnmtosgi(1)



AUTHOR

       Copyright (C) 1994 by  Ingo  Wilken  (Ingo.Wilken@informatik.uni-olden-
       burg.de)



netpbm documentation              29 Jul 2000          Sgitopnm User Manual(0)

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