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Rletopnm User Manual(0) 						  Rletopnm User Manual(0)

NAME
       rletopnm - convert a Utah Raster Tools RLE image file to a PNM image file.

SYNOPSIS
       rletopnm

       [--alphaout={alpha-filename,-}] [--headerdump|-h]

       [--verbose|-v]

       [rlefile|-]

       All  options may be abbreviated to their minimum unique abbreviation and options and argu-
       ments may be in any order.

DESCRIPTION
       This program is part of Netpbm(1)

       rletopnm converts Utah Raster Toolkit RLE image files to PNM image files.   rletopnm  han-
       dles  four  types  of  RLE files: Grayscale (8 bit data, no color map), Pseudocolor (8 bit
       data with a color map), Truecolor (24 bit data with color map), and  Directcolor  (24  bit
       data,  no  color  map).	 rletopnm generates a PPM file for all these cases except for the
       Grayscale file, for which rletopnm generates a PGM file.

       rlefile is the RLE input file.  If it is absent or -, the input comes from Standard Input.

OPTIONS
       --alphaout=alpha-filename
	      rletopnm	creates a PGM (portable graymap) file containing the alpha channel values
	      in  the  input  image.   If  the	input image doesn't contain an alpha channel, the
	      alpha-filename file contains all zero (transparent) alpha  values.   If  you  don't
	      specify  --alphaout,  rletopnm  does  not  generate an alpha file, and if the input
	      image has an alpha channel, rletopnm simply discards it.

	      If you specify - as the filename, rletopnm writes the alpha output to Standard Out-
	      put and discards the image.

	      See pamcomp(1)
	       for one way to use the alpha output file.

       --verbose
	      This  option causes rletopnm  to operate in verbose mode.  It prints messages about
	      what it's doing, including the contents of the RLE image header, to Standard Error.

       --headerdump
	      This option causes rletopnm to operate in header dump mode.  It prints the contents
	      of the RLE image header to Standard Error, but does not produce any other output.

EXAMPLES
       o      While  running  in  verbose  mode,  convert  lenna.rle  to PPM format and store the
	      resulting image as lenna.ppm:

		  rletopnm --verbose lenna.rle >lenna.ppm

       o      Dump the header information of the RLE file called file.rle:

		  rletopnm --headerdump file.rle

       o      Convert RLE file dart.rle to PPM format as dart.ppm.  Store the  alpha  channel  of
	      dart.rle as dartalpha.pgm (if dart.rle doesn't have an alpha channel, store a fully
	      transparent alpha mask as dartalpha.pgm):

		  rletopnm --alphaout=dartalpha.pgm dart.rle >dart.ppm

SEE ALSO
       pnmtorle(1) , pnmconvol(1) , pnm(1) , ppm(1) , pgm(1) ,

AUTHOR
       Wes Barris Army High Performance Computing Research Center  (AHPCRC)  Minnesota	Supercom-
       puter Center, Inc.

       Modifications by Eric Haines to support raw and plain formats.

       Modifications by Bryan Henderson to create alpha files and use mnemonic options.

netpbm documentation			  13 April 2000 		  Rletopnm User Manual(0)
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