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TIFFGT(1)		    General Commands Manual		     TIFFGT(1)

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

SYNOPSIS
       tiffgt [	options	] input.tif ...

DESCRIPTION
       tiffgt displays one or more images stored using the Tag Image File For-
       mat,  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  characteris-
       tics:
	    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 (PhotometricInterpretation=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
       written 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	speci-
       fied on the command line	to be displayed.  In  addition	the  following
       keyboard	commands are recognized:

       b      Use  a PhotometricInterpretation 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-to-lsb 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  im-
	      age.

       w      Use  a PhotometricInterpretation 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 (FillOrder,  Pho-
	      tometricInterpretation, 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 (unimplemented).

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 re-
	      quested 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 syntax; i.e.  a  leading  ``0x''  for
	      hexadecimal and a	leading	``0'' for octal.

       -p     Override the value of the	PhotometricInterpretation tag; the pa-
	      rameter may be one of:  miniswhite,  minisblack,	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 in-
	      put 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 win-
	      dow (full	color or colormap) is being used, the name of the  in-
	      put  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	 truncated  to
       avoid crashing old versions of the window manager.

SEE ALSO
       tiffdump(1), tiffinfo(1), tiffcp(1), libtiff(3TIFF)

       Libtiff library home page: http://www.simplesystems.org/libtiff/

libtiff			      September	20, 2005		     TIFFGT(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | BUGS | SEE ALSO

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