TIFFGT(1)						      General Commands Manual							 TIFFGT(1)

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 (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; other-
       wise 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 specified 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 image.

       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, 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 (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 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 syntax; i.e. a leading ``0x'' for hexadecimal and a leading ``0'' for octal.

       -p     Override the value of the PhotometricInterpretation tag; the parameter 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 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 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.remotesensing.org/libtiff/

libtiff 							September 20, 2005							 TIFFGT(1)