src/tiff/man/tiffgt.1

   1 .\"
   2 .\" Copyright (c) 1988-1997 Sam Leffler
   3 .\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
   4 .\"
   5 .\" Permission to use, copy, modify, distribute, and sell this software and
   6 .\" its documentation for any purpose is hereby granted without fee, provided
   7 .\" that (i) the above copyright notices and this permission notice appear in
   8 .\" all copies of the software and related documentation, and (ii) the names of
   9 .\" Sam Leffler and Silicon Graphics may not be used in any advertising or
  10 .\" publicity relating to the software without the specific, prior written
  11 .\" permission of Sam Leffler and Silicon Graphics.
  12 .\"
  13 .\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  14 .\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  15 .\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  16 .\"
  17 .\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
  18 .\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
  19 .\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  20 .\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  21 .\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  22 .\" OF THIS SOFTWARE.
  23 .\"
  24 .if n .po 0
  25 .TH TIFFGT 1 "September 20, 2005" "libtiff"
  26 .SH NAME
  27 tiffgt \- display an image stored in a
  28 .SM TIFF
  29 file (Silicon Graphics version)
  30 .SH SYNOPSIS
  31 .B tiffgt
  32 [
  33 .I options
  34 ]
  35 .I "input.tif ..."
  36 .SH DESCRIPTION
  37 .I tiffgt
  38 displays one or more images stored using the
  39 Tag Image File Format, Revision 6.0.
  40 Each image is placed in a fixed size window that the
  41 user must position on the display (unless configured
  42 otherwise through X defaults).
  43 If the display has fewer than 24 bitplanes, or if the
  44 image does not warrant full color, then
  45 .SM RGB
  46 color values are mapped to the closest values that exist in
  47 the colormap (this is done using the
  48 .I rgbi
  49 routine found in the graphics utility library
  50 .BR \-lgutil .)
  51 .PP
  52 .I tiffgt
  53 correctly handles files with any of the following characteristics:
  54 .sp .5
  55 .in +0.5i
  56 .ta \w'\fIPhotometricInterpretation\fP  'u
  57 .nf
  58 \fIBitsPerSample\fP     1, 2, 4, 8, 16
  59 \fISamplesPerPixel\fP   1, 3, 4 (the 4th sample is ignored)
  60 \fIPhotometricInterpretation\fP 0 (min-is-white), 1 (min-is-black), 2 (RGB), 3 (palette), 6 (YCbCr)
  61 \fIPlanarConfiguration\fP       1 (contiguous), 2 (separate)
  62 \fIOrientation\fP       1 (top-left), 4 (bottom-left)
  63 .fi
  64 .in -0.5i
  65 .sp .5
  66 Data may be organized as strips or tiles and may be
  67 compressed with any of the compression algorithms supported
  68 by the
  69 .IR libtiff (3)
  70 library.
  71 .PP
  72 For palette images (\c
  73 .IR PhotometricInterpretation =3),
  74 .I tiffgt
  75 inspects the colormap values and assumes either 16-bit
  76 or 8-bit values according to the maximum value.
  77 That is, if no colormap entry greater than 255 is found,
  78 .I tiffgt
  79 assumes the colormap has only 8-bit values; otherwise
  80 it assumes 16-bit values.
  81 This inspection is done to handle old images written by
  82 previous (incorrect) versions of
  83 .IR libtiff .
  84 .PP
  85 .I tiffgt
  86 can be used to display multiple images one-at-a-time.
  87 The left mouse button switches the display to the first image in the
  88 .I next
  89 file in the list of files specified on the command line.
  90 The right mouse button switches to the first image in the
  91 .I previous
  92 file in the list.
  93 The middle mouse button causes the first image in the first file
  94 specified on the command line to be displayed.
  95 In addition the following keyboard commands are recognized:
  96 .TP
  97 .B b
  98 Use a
  99 .I PhotometricInterpretation
 100 of MinIsBlack in displaying the current image.
 101 .TP
 102 .B l
 103 Use a
 104 .I FillOrder
 105 of lsb-to-msb in decoding the current image.
 106 .TP
 107 .B m
 108 Use a
 109 .I FillOrder
 110 of msb-to-lsb in decoding the current image.
 111 .TP
 112 .B c
 113 Use a colormap visual to display the current image.
 114 .TP
 115 .B r
 116 Use a true color (24-bit RGB) visual to display the current image.
 117 .TP
 118 .B w
 119 Use a
 120 .I PhotometricInterpretation
 121 of MinIsWhite in displaying the current image.
 122 .TP
 123 .B W
 124 Toggle (enable/disable) display of warning messages from the
 125 .SM TIFF
 126 library when decoding images.
 127 .TP
 128 .B E
 129 Toggle (enable/disable) display of error messages from the
 130 .SM TIFF
 131 library when decoding images.
 132 .TP
 133 .B z
 134 Reset all parameters to their default settings (\c
 135 .IR FillOrder ,
 136 .IR PhotometricInterpretation ,
 137 handling of warnings and errors).
 138 .TP
 139 .B PageUp
 140 Display the previous image in the current file or the last
 141 image in the previous file.
 142 .TP
 143 .B PageDown
 144 Display the next image in the current file or the first image
 145 in the next file.
 146 .TP
 147 .B Home
 148 Display the first image in the current file.
 149 .TP
 150 .B End
 151 Display the last image in the current file (unimplemented).
 152 .SH OPTIONS
 153 .TP
 154 .B \-c
 155 Force image display in a colormap window.
 156 .TP
 157 .B \-d
 158 Specify an image to display by directory number.
 159 By default the first image in the file is displayed.
 160 Directories are numbered starting at zero.
 161 .TP
 162 .B \-e
 163 Enable reporting of error messages from the
 164 .SM TIFF
 165 library.
 166 By default
 167 .I tiffgt
 168 silently ignores images that cannot be read.
 169 .TP
 170 .B \-f
 171 Force
 172 .I tiffgt
 173 to run as a foreground process.
 174 By default
 175 .I tiffgt
 176 will place itself in the background once it has opened the
 177 requested image file.
 178 .TP
 179 .B \-l
 180 Force the presumed bit ordering to be
 181 .SM LSB
 182 to
 183 .SM MSB.
 184 .TP
 185 .B \-m
 186 Force the presumed bit ordering to be
 187 .SM MSB
 188 to
 189 .SM LSB.
 190 .TP
 191 .B \-o
 192 Specify an image to display by directory offset.
 193 By default the first image in the file is displayed.
 194 Directories offsets may be specified using C-style syntax;
 195 i.e. a leading ``0x'' for hexadecimal and a leading ``0'' for octal.
 196 .TP
 197 .B \-p
 198 Override the value of the
 199 .I PhotometricInterpretation
 200 tag; the parameter may be one of:
 201 .BR miniswhite ,
 202 .BR minisblack ,
 203 .BR rgb ,
 204 .BR palette ,
 205 .BR mask ,
 206 .BR separated ,
 207 .BR ycbcr ,
 208 and
 209 .BR cielab .
 210 .TP
 211 .B \-r
 212 Force image display in a full color window.
 213 .TP
 214 .B \-s
 215 Stop on the first read error.
 216 By default all errors in the input data are ignored and
 217 .I tiffgt
 218 does it's best to display as much of an image as possible.
 219 .TP
 220 .B \-w
 221 Enable reporting of warning messages from the
 222 .SM TIFF
 223 library.
 224 By default
 225 .I tiffgt
 226 ignores warning messages generated when reading an image.
 227 .TP
 228 .B \-v
 229 Place information in the title bar describing
 230 what type of window (full color or colormap) is being
 231 used, the name of the input file, and the directory
 232 index of the image (if non-zero).
 233 By default, the window type is not shown in the title bar.
 234 .SH BUGS
 235 Images wider and taller than the display are silently truncated to avoid
 236 crashing old versions of the window manager.
 237 .SH "SEE ALSO"
 238 .BR tiffdump (1),
 239 .BR tiffinfo (1),
 240 .BR tiffcp (1),
 241 .BR libtiff (3TIFF)
 242 .PP
 243 Libtiff library home page:
 244 .BR http://www.remotesensing.org/libtiff/