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rawtoppm(1) AMIGA (06 February 1991) rawtoppm(1)
NAME
rawtoppm - convert raw RGB bytes into a portable pixmap
SYNOPSIS
rawtoppm [-headerskip N] [-rowskip N] [-rgb|-rbg|-grb |-
gbr|-brg|-bgr ] [-interpixel|-interrow] width height
[imagedata]
DESCRIPTION
Reads raw RGB bytes as input. Produces a portable pixmap as
output. The input file is just RGB bytes. You have to
specify the width and height on the command line, since the
program obviously can't get them from the file. The maxval
is assumed to be 255. If the resulting image is upside
down, run it through pnmflip -tb .
OPTIONS
-headerskip
If the file has a header, you can use this flag to skip
over it.
-rowskip
If there is padding at the ends of the rows, you can
skip it with this flag.
-rgb -rbg -grb -gbr -brg -bgr
These flags let you specify alternate color orders.
The default is -rgb.
-interpixel -interrow
These flags let you specify how the colors are
interleaved. The default is -interpixel, meaning
interleaved by pixel. A byte of red, a byte of green,
and a byte of blue, or whatever color order you
specified. -interrow means interleaved by row - a row
of red, a row of green, a row of blue, assuming
standard rgb color order. An -interplane flag - all
the red pixels, then all the green, then all the blue -
would be an obvious extension, but is not implemented.
You could get the same effect by splitting the file
into three parts (perhaps using dd), turning each part
into a PGM file with rawtopgm, and then combining them
with rgb3toppm.
SEE ALSO
ppm(5), rawtopgm(1), rgb3toppm(1), pnmflip(1)
AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
Page 1 (printed 3/1/94)