1Pnmtorle User Manual(0)                                Pnmtorle User Manual(0)
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NAME

6       pnmtorle - convert a Netpbm image file into an RLE image file.
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SYNOPSIS

9       pnmtorle
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11       [-h] [-v] [-a] [-o outfile] [pnmfile]
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DESCRIPTION

15       This program is part of Netpbm(1).
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17       This  program  converts  Netpbm  image files into Utah RLE image files.
18       You can include a transparency mask.  If the input is a multiple  image
19       file, the output consists of several concatenated RLE images.
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21       The  RLE file will contain either a three channel color image (24 bits)
22       or a single channel grayscale image (8 bits)  depending  upon  the  pnm
23       file  depth.   If a converted ppm is displayed on an 8 bit display, the
24       image must be dithered.  In order to produce a better looking image (on
25       8  bit  displays), it is recommended that the image be quantizing (to 8
26       bit mapped color) prior to its display.  This may be done by piping the
27       output  of  this  program into the Utah mcut or rlequant utilities.  We
28       show an example of this later.
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OPTIONS

32       -v     This option will cause pnmtorle to operate in verbose mode.  The
33              header  information  is written to "stderr".  Actually, there is
34              not much header information stored in a  Netpbm  file,  so  this
35              information is minimal.
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37       -h     This  option  allows the header of the Netpbm image to be dumped
38              to "stderr" without converting the file.  It  is  equivalent  to
39              using the -v option except that no file conversion takes place.
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41       -a     This  option  causes pnmtorle to include an transparency channel
42              in the output image.  The transparency channel is based  on  the
43              image:  Wherever a pixel is black, the corresponding trasparency
44              value is transparent.  Everywhere else, the  transparency  value
45              is fully opaque.
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48       -o outfile
49              If  you  specify this option, pnmtorle writes the output to this
50              file.  If outfile is - or you don't specify -o, pnmtorle  writes
51              the output to Standard Output.
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54       pnmfile
55              The  name of the Netpbm image data file to be converted.  If not
56              specified, standard input is assumed.
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EXAMPLES

61          pnmtorle -v file.ppm -o file.rle
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63       While running in verbose mode, convert file.ppm to RLE format and store
64       resulting data in file.rle.
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66          pnmtorle -h file.pgm
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68       Dump the header information of the Netpbm file called file.pgm.
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SEE ALSO

72       rletopnm(1)
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AUTHOR

76       Wes Barris,
77       Army High Performance Computing Research Center (AHPCRC)
78       Minnesota Supercomputer Center, Inc.
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DOCUMENT SOURCE

81       This  manual  page was generated by the Netpbm tool 'makeman' from HTML
82       source.  The master documentation is at
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84              http://netpbm.sourceforge.net/doc/pnmtorle.html
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86netpbm documentation            March 31, 1994         Pnmtorle User Manual(0)
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