NAME
ximtoppm - convert an Xim file to a PPM image
SYNOPSIS
ximtoppm
[--alphaout={alpha-filename,-}] [ximfile]
DESCRIPTION
This program is part of Netpbm(1)
ximptoppm reads an Xim file as input and produces a PPM image as output. The Xim toolkit is included in the contrib tree of the X.V11R4 release.
OPTIONS
You can abbreviate any option to its shortest unique prefix.
--alphaout=alpha-filename | |
ximtoppm creates a PGM file containing the alpha channel
values in the input image. If the input image doesnt contain an
alpha channel, the alpha-filename file contains all zero
(transparent) alpha values. If you dont specify --alphaout,
ximtoppm does not generate an alpha file, and if the input
image has an alpha channel, ximtoppm simply discards it.
If you specify - as the filename, ximtoppm writes the alpha output to Standard Output and discards the image. Actually, an Xim image can contain an arbitrary fourth channel -- it need not be an Alpha channel. ximtoppm extracts any fourth channel it finds as described above; it doesnt matter if it is an alpha channel or not. See pamcomp(1) for one way to use the alpha output file.
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SEE ALSO
AUTHOR
Copyright (C) 1991 by Jef Poskanzer.