src/tiff/man/tiffsv.1

   1 .\" $Id: tiffsv.1,v 1.3 2005/11/02 11:07:19 dron Exp $
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   3 .\" Copyright (c) 1988-1997 Sam Leffler
   4 .\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
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  25 .if n .po 0
  26 .TH TIFFSV 1 "September 20, 2005" "libtiff"
  27 .SH NAME
  28 tiffsv \- save an image from the framebuffer in a
  29 .SM TIFF
  30 file (Silicon Graphics version)
  31 .SH SYNOPSIS
  32 .B tiffsv
  33 [
  34 .I options
  35 ]
  36 .I output.tif
  37 [
  38 .I "x1 x2 y1 y2"
  39 ]
  40 .SH DESCRIPTION
  41 .I tiffsv
  42 saves all or part of the framebuffer in a file using the
  43 Tag Image File Format, Revision 6.0.
  44 By default, the image is saved with data samples packed (\c
  45 .IR PlanarConfiguration =1),
  46 compressed with the Lempel-Ziv & Welch algorithm (\c
  47 .IR Compression =5),
  48 and with each strip no more than 8 kilobytes.
  49 These characteristics can be overridden, or explicitly specified
  50 with the options described below.
  51 .SH OPTIONS
  52 .TP
  53 .B \-b
  54 Save the image as a greyscale image
  55 as if it were processed by
  56 .IR tiff2bw (1).
  57 This option is included for compatibility with the standard
  58 .IR scrsave (6D)
  59 program.
  60 .TP
  61 .B \-c
  62 Specify the compression to use for data written to the output file:
  63 .B none
  64 for no compression,
  65 .B packbits
  66 for PackBits compression,
  67 .B jpeg
  68 for baseline JPEG compression,
  69 .B zip
  70 for Deflate compression,
  71 and
  72 .B lzw
  73 for Lempel-Ziv & Welch compression (default).
  74 .IP
  75 .SM LZW
  76 compression can be specified together with a
  77 .I predictor
  78 value.
  79 A predictor value of 2 causes
  80 each scanline of the output image to undergo horizontal
  81 differencing before it is encoded; a value
  82 of 1 forces each scanline to be encoded without differencing.
  83 LZW-specific options are specified by appending a ``:''-separated
  84 list to the ``lzw'' option; e.g.
  85 .B "\-c lzw:2"
  86 for
  87 .SM LZW
  88 compression with horizontal differencing.
  89 .TP
  90 .B \-p
  91 Specify the planar configuration to use in writing image data.
  92 By default,
  93 .I tiffsv
  94 will create a new file with the data samples packed contiguously.
  95 Specifying
  96 .B "\-p contig"
  97 will force data to be written with multi-sample data packed
  98 together, while
  99 .B "\-p separate"
 100 will force samples to be written in separate planes.
 101 .TP
 102 .B \-r
 103 Specify the number of rows (scanlines) in each strip of data
 104 written to the output file.
 105 By default,
 106 .I tiffsv
 107 attempts to set the rows/strip
 108 that no more than 8 kilobytes of data appear in a strip.
 109 .SH NOTE
 110 Except for the use of
 111 .SM TIFF,
 112 this program is equivalent to the standard
 113 .I scrsave
 114 program.
 115 This means, for example, that you can use it in conjunction with
 116 the standard
 117 .IR icut
 118 program simply by creating a link called
 119 .IR scrsave ,
 120 or by creating a shell script called
 121 .I scrsave
 122 that invokes
 123 .I tiffgt
 124 with the appropriate options.
 125 .SH BUGS
 126 If data are saved compressed and in separate planes, then the
 127 rows in each strip is silently set to one to avoid limitations
 128 in the
 129 .BR libtiff (3TIFF)
 130 library.
 131 .SH "SEE ALSO"
 132 .BR scrsave (6D)
 133 .BR pal2rgb (1),
 134 .BR tiffdump (1),
 135 .BR tiffgt (1),
 136 .BR tiffinfo (1),
 137 .BR tiffcp (1),
 138 .BR tiffmedian (1),
 139 .BR libtiff (3TIFF)
 140 .PP
 141 Libtiff library home page:
 142 .BR http://www.remotesensing.org/libtiff/