Manual: rawtoppm

Rawtoppm User Manual(1)				   General Commands Manual			     Rawtoppm User Manual(1)

NAME
       rawtoppm - convert a stream of raw RGB bytes to a PPM image

SYNOPSIS
       rawtoppm

       [-headerskip N]

       [-rowskip N]

       [ -rgb|-rbg|-grb |-gbr|-brg|-bgr ]

       [-interpixel|-interrow] width height

       [imagedata]

DESCRIPTION
       This program is part of Netpbm(1).

       rawtoppm	 reads	raw  RGB  bytes as input and produces a PPM image 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.
       rawtoppm assumes the maxval of the input samples is 255, and makes the maxval of the output PPM 255.

       rawtoppm assumes the pixels come top first in the input stream.	If they are actually bottom first, the resulting PPM
       is upside down, so run it through pamflip -tb.

OPTIONS
       In  addition  to	 the  options common to all programs based on libnetpbm (most notably -quiet, see  Common Options ),
       rawtoppm recognizes the following command line options:

       -headerskip
	      Skip over this many bytes at the beginning of the input stream.  Use this option when the input has some	kind
	      of header followed by a raster suitable for rawtoppm.

       -rowskip
	      Skip  this  many	bytes  at the end of each row of the raster.  (Some input streams have padding at the end of
	      rows).

       -rgb -rbg -grb -gbr -brg -bgr
	      This option specifies the order of the color components for each pixel.  The default is -rgb.

       -interpixel -interrow
	      These options 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 option - all the red pixels, then all the green, then all the blue - would be	 an  obvious  exten‐
	      sion,  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(1), rawtopgm(1), rgb3toppm(1), pamflip(1)

AUTHOR
       Copyright (C) 1991 by Jef Poskanzer.

DOCUMENT SOURCE
       This manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master documentation is at

	      http://netpbm.sourceforge.net/doc/rawtoppm.html

netpbm documentation				      06 February 1991				     Rawtoppm User Manual(1)