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NAME
     tiffgt - display an image stored in  a  TIFF  file  (Silicon
     Graphics version)

SYNOPSIS
     tiffgt [ options ] input.tif ...

DESCRIPTION
     tiffgt displays one or more  images  stored  using  the  Tag
     Image  File Format, Revision 6.0.  Each image is placed in a
     fixed size window that the user must position on the display
     (unless  configured  otherwise  through X defaults).  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.

     tiffgt can be used to display multiple images one-at-a-time.
     The  left  mouse  button  switches  the display to the first
     image in the next file in the list of files specified on the
     command  line.  The right mouse button switches to the first
     image in the previous file in the list.   The  middle  mouse
     button causes the first image in the first file specified on
     the command line to be displayed.  In addition the following
     keyboard commands are recognized:

     b    Use  a  PhotometricIntepretation   of   MinIsBlack   in
          displaying the current image.

     l    Use a FillOrder of lsb-to-msb in decoding  the  current
          image.

     m    Use a FillOrder of msb-tolmsb in decoding  the  current
          image.

     c    Use a colormap visual to display the current image.

     r    Use a true color (24-bit RGB)  visual  to  display  the
          current image.

     w    Use  a  PhotometricIntepretation   of   MinIsWhite   in
          displaying the current image.

     W    Toggle (enable/disable)  display  of  warning  messages
          from the TIFF library when decoding images.

     E    Toggle (enable/disable) display of error messages  from
          the TIFF library when decoding images.

     z    Reset all parameters to their  default  settings  (Fil-
          lOrder, PhotometricInterpretation, handling of warnings
          and errors).

     PageUp
          Display the previous image in the current file  or  the
          last image in the previous file.

     PageDown
          Display the next image in the current file or the first
          image in the next file.

     Home Display the first image in the current file.

     End  Display the last image in the  current  file  (unimple-
          mented).

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.

     -e   Enable  reporting  of  error  messages  from  the  TIFF
          library.   By  default  tiffgt  silently ignores images
          that cannot be read.

     -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.
     -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.

     -p   Override the  value  of  the  PhotometricInterpretation
          tag;  the  parameter may be one of:  miniswhite, minis-
          black,  rgb,  palette,  mask,  separated,  ycbcr,   and
          cielab.

     -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.

     -w   Enable reporting of  warning  messages  from  the  TIFF
          library.   By  default  tiffgt ignores warning messages
          generated when reading an image.

     -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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