src/tiff/man/tiffsv.1

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