src/tiff/man/ppm2tiff.1

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   2 .\" Copyright (c) 1991-1997 Sam Leffler
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  24 .if n .po 0
  25 .TH PPM2TIFF 1 "March 1, 2006" "libtiff"
  26 .SH NAME
  27 ppm2tiff \- create a
  28 .SM TIFF
  29 file from
  30 .SM PPM, PGM
  31 and
  32 .SM PBM
  33 image files
  34 .SH SYNOPSIS
  35 .B ppm2tiff
  36 [
  37 .I options
  38 ] [
  39 .I input.ppm
  40 ]
  41 .I output.tif
  42 .SH DESCRIPTION
  43 .I ppm2tiff
  44 converts a file in the
  45 .SM PPM, PGM
  46 and
  47 .SM PBM
  48 image formats to
  49 .SM TIFF.
  50 By default, the
  51 .SM TIFF
  52 image is created with data samples packed (\c
  53 .IR PlanarConfiguration =1),
  54 compressed with the Packbits algorithm (\c
  55 .IR Compression =32773),
  56 and with each strip no more than 8 kilobytes. These characteristics can be
  57 overridden, or explicitly specified with the options described below
  58 .PP
  59 If the
  60 .SM PPM
  61 file contains greyscale data, then the
  62 .I PhotometricInterpretation
  63 tag is set to 1 (min-is-black), otherwise it is set to 2 (RGB).
  64 .PP
  65 If no
  66 .SM PPM
  67 file is specified on the command line,
  68 .I ppm2tiff
  69 will read from the standard input.
  70 .SH OPTIONS
  71 .TP
  72 .B \-c
  73 Specify a compression scheme to use when writing image data:
  74 .B none
  75 for no compression,
  76 .B packbits
  77 for PackBits compression (will be used by default),
  78 .B lzw
  79 for Lempel-Ziv & Welch compression,
  80 .B jpeg
  81 for baseline JPEG compression,
  82 .B zip
  83 for Deflate compression,
  84 .B g3
  85 for CCITT Group 3 (T.4) compression,
  86 and
  87 .B g4
  88 for CCITT Group 4 (T.6) compression.
  89 .TP
  90 .B \-r
  91 Write data with a specified number of rows per strip; by default the number of
  92 rows/strip is selected so that each strip is approximately 8 kilobytes.
  93 .TP
  94 .B \-R
  95 Mark the resultant image to have the specified X and Y resolution (in
  96 dots/inch).
  97 .SH "SEE ALSO"
  98 .BR tiffinfo (1),
  99 .BR tiffcp (1),
 100 .BR tiffmedian (1),
 101 .BR libtiff (3)
 102 .PP
 103 Libtiff library home page:
 104 .BR http://www.remotesensing.org/libtiff/