rletopnm(1)

1Rletopnm User Manual(0)                                Rletopnm User Manual(0)
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NAME

6       rletopnm  -  convert  a Utah Raster Tools RLE image file to a PNM image
7       file.
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SYNOPSIS

11       rletopnm
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13       [--alphaout={alpha-filename,-}] [--headerdump|-h]
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15       [--verbose|-v]
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17       [rlefile|-]
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19       All options may be abbreviated to their minimum unique abbreviation and
20       options and arguments may be in any order.
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DESCRIPTION

24       This program is part of Netpbm(1).
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26       rletopnm  converts  Utah  Raster  Toolkit  RLE image files to PNM image
27       files.  rletopnm handles four types of  RLE  files:  Grayscale  (8  bit
28       data,  no  color map), Pseudocolor (8 bit data with a color map), True‐
29       color (24 bit data with color map), and Directcolor (24  bit  data,  no
30       color  map).   rletopnm generates a PPM file for all these cases except
31       for the Grayscale file, for which rletopnm generates a PGM file.
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33       rlefile is the RLE input file.  If it is absent or -, the  input  comes
34       from Standard Input.
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OPTIONS

38       In  addition  to  the options common to all programs based on libnetpbm
39       (most notably -quiet, see
40        Common Options ⟨index.html#commonoptions⟩ ), rletopnm  recognizes  the
41       following command line options:
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45       --alphaout=alpha-filename
46              rletopnm   creates  a PGM (portable graymap) file containing the
47              transparency channel values in the input image.   If  the  input
48              image  doesn't  contain an transparency channel, the alpha-file‐
49              name file contains all zero (transparent)  transparency  values.
50              If  you  don't  specify --alphaout, rletopnm does not generate a
51              transparency file, and if the input  image  has  a  transparency
52              channel, rletopnm simply discards it.
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54              If  you  specify  -  as the filename, rletopnm writes the trans‐
55              parency output to Standard Output and discards the image.
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57              See pamcomp(1) for one way to use the transparency output file.
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60       --verbose
61              This option causes rletopnm  to operate  in  verbose  mode.   It
62              prints messages about what it's doing, including the contents of
63              the RLE image header, to Standard Error.
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66       --headerdump
67              This option causes rletopnm to operate in header dump mode.   It
68              prints  the  contents of the RLE image header to Standard Error,
69              but does not produce any other output.
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EXAMPLES

75       ·      While running in verbose mode, convert lenna.rle to  PPM  format
76              and store the resulting image as lenna.ppm:
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78                  rletopnm --verbose lenna.rle >lenna.ppm
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81       ·      Dump the header information of the RLE file called file.rle:
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83                  rletopnm --headerdump file.rle
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86       ·      Convert  RLE file dart.rle to PPM format as dart.ppm.  Store the
87              transparency channel of dart.rle as dartalpha.pgm  (if  dart.rle
88              doesn't  have  a transparency channel, store a fully transparent
89              transparency mask as dartalpha.pgm):
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91                  rletopnm --alphaout=dartalpha.pgm dart.rle >dart.ppm
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AUTHOR

101       Wes Barris Army High Performance  Computing  Research  Center  (AHPCRC)
102       Minnesota Supercomputer Center, Inc.
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104       Modifications by Eric Haines to produce raw and plain formats.
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106       Modifications  by  Bryan Henderson to create transparency files and use
107       mnemonic options.
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DOCUMENT SOURCE

110       This manual page was generated by the Netpbm tool 'makeman'  from  HTML
111       source.  The master documentation is at
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113              http://netpbm.sourceforge.net/doc/rletopnm.html
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115netpbm documentation             13 April 2000         Rletopnm User Manual(0)