TIFFGT(1) USER COMMANDS TIFFGT(1)
NAME
tiffgt - display an image stored in a TIFF file (Silicon
Graphics version)
SYNOPSIS
tiffgt [ options ] input.tif
DESCRIPTION
tiffgt displays an image stored in a file with the Tag Image
File Format, Revision 6.0. The image is placed in a fixed
size window that the user must position on the display. If
the display has fewer than 24 bitplanes, or if the image
does not warrant full color, then RGB color values are
mapped to the closest values that exist in the colormap
(this is done using the rgbi routine found in the graphics
utility library -lgutil.)
tiffgt correctly handles files with any of the following
characteristics:
BitsPerSample 1, 2, 4, 8, 16
SamplesPerPixel 1, 3, 4 (the 4th sample is ignored)
PhotometricInterpretation 0 (min-is-white), 1 (min-is-black), 2 (RGB), 3 (palette), 6 (YCbCr)
PlanarConfiguration 1 (contiguous), 2 (separate)
Orientation 1 (top-left), 4 (bottom-left)
Data may be organized as strips or tiles and may be
compressed with any of the compression algorithms supported
by the libtiff(3) library.
For palette images (PhotomatricInterpretation=3), tiffgt
inspects the colormap values and assumes either 16-bit or
8-bit values according to the maximum value. That is, if no
colormap entry greater than 255 is found, tiffgt assumes the
colormap has only 8-bit values; otherwise it assumes 16-bit
values. This inspection is done to handle old images writ-
ten by previous (incorrect) versions of libtiff.
OPTIONS
-c Force image display in a colormap window.
-d Specify an image to display by directory number. By
default the first image in the file is displayed.
Directories are numbered starting at zero.
-f Force tiffgt to run as a foreground process. By
default tiffgt will place itself in the background once
it has opened the requested image file.
-l Force the presumed bit ordering to be LSB to MSB.
-m Force the presumed bit ordering to be MSB to LSB.
Sun Release 4.1 Last change: September 26, 1994 1
TIFFGT(1) USER COMMANDS TIFFGT(1)
-o Specify an image to display by directory offset. By
default the first image in the file is displayed.
Directories offsets may be specified using C-style syn-
tax; i.e. a leading ``0x'' for hexadecimal and a lead-
ing ``0'' for octal.
-r Force image display in a full color window.
-s Stop on the first read error. By default all errors in
the input data are ignored and tiffgt does it's best to
display as much of an image as possible.
-v Place information in the title bar describing what type
of window (full color or colormap) is being used, the
name of the input file, and the directory index of the
image (if non-zero). By default, the window type is
not shown in the title bar.
BUGS
Images wider and taller than the display are silently trun-
cated to avoid crashing old versions of the window manager.
SEE ALSO
tiffdump(1), tiffinfo(1), tiffcp(1), libtiff(3)
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