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TIFF2PS(1) TIFF2PS(1)
NAME
tiff2ps - convert a TIFF image to POSTSCRIPT(TM)
SYNOPSIS
tiff2ps [ options ] input.tif ...
DESCRIPTION
tiff2ps reads TIFF images and writes POSTSCRIPT or Encapsulated
POSTSCRIPT (EPS) on the standard output. By default, tiff2ps writes
Encapsulated POSTSCRIPT for the first image in the specified TIFF
image file.
By default, tiff2ps will generate POSTSCRIPT that fills a printed area
specified by the TIFF tags in the input file. If the file does not
contain XResolution or YResolution tags, then the printed area is set
according to the image dimensions. The -w and -h options (see below)
can be used to set the dimensions of the printed area in inches; over-
riding any relevant TIFF tags.
The POSTSCRIPT generated for RGB, palette, and CMYK images uses the
colorimage operator. The POSTSCRIPT generated for greyscale and
bilevel images uses the image operator. When the colorimage operator
is used, POSTSCRIPT code to emulate this operator on older POSTSCRIPT
printers is also generated. Note that this emulation code can be very
slow.
Color images with associated alpha data are composited over a white
background.
OPTIONS
-1 Generate POSTSCRIPT Level 1 (the default).
-2 Generate POSTSCRIPT Level 2.
-3 Generate POSTSCRIPT Level 3. It basically allows one to use the
/flateDecode filter for ZIP compressed TIFF images.
-a Generate output for all IFDs (pages) in the input file.
-b Specify the bottom margin for the output (in inches). This does
not affect the height of the printed image.
-c Center the image in the output. This option only shows an
effect if both the -w and the -h option are given.
-d Set the initial TIFF directory to the specified directory num-
ber. (NB: directories are numbered starting at zero.) This
option is useful for selecting individual pages in a multi-page
(e.g. facsimile) file.
-e Force the generation of Encapsulated POSTSCRIPT (implies -z).
-h Specify the vertical size of the printed area (in inches).
-H Specify the maximum height of image (in inches). Images with
larger sizes will be splitted in several pages. Option -L may
be used for specifying size of splitted images overlapping.
-i Enable/disable pixel interpolation. This option requires a
single numeric value: zero to disable pixel interpolation and
non-zero to enable. The default is enabled.
-L Specify the size of overlapping for splitted images (in
inches). Used in conjuction with -H option.
-l Specify the left margin for the output (in inches). This does
not affect the width of the printed image.
-m Where possible render using the imagemask POSTSCRIPT operator
instead of the image operator. When this option is specified
tiff2ps will use imagemask for rendering 1 bit deep images. If
this option is not specified or if the image depth is greater
than 1 then the image operator is used.
-o Set the initial TIFF directory to the IFD at the specified file
offset. This option is useful for selecting thumbnail images
and the like which are hidden using the SubIFD tag.
-p Force the generation of (non-Encapsulated) POSTSCRIPT.
-r Rotate image by 180 degrees.
-s Generate output for a single IFD (page) in the input file.
-w Specify the horizontal size of the printed area (in inches).
-x Override resolution units specified in the TIFF as centimeters.
-y Override resolution units specified in the TIFF as inches.
-z When generating POSTSCRIPT Level 2, data is scaled so that it
does not image into the deadzone on a page (the outer margin
that the printing device is unable to mark). This option sup-
presses this behaviour. When POSTSCRIPT Level 1 is generated,
data is imaged to the entire printed page and this option has
no affect.
EXAMPLES
The following generates POSTSCRIPT Level 2 for all pages of a facsim-
ile:
tiff2ps -a2 fax.tif | lpr
Note also that if you have version 2.6.1 or newer of Ghostscript then
you can efficiently preview facsimile generated with the above com-
mand.
To generate Encapsulated POSTSCRIPT for a the image at directory 2 of
an image use:
tiff2ps -d 1 foo.tif
(notice that directories are numbered starting at zero.)
If you have a long image, it may be splitted in several pages:
tiff2ps -h11 -w8.5 -H14 -L.5 foo.tif > foo.ps
The page size is set to 8.5x11 by -w and -h options. We will accept a
small amount of vertical compression, so -H set to 14. Any pages
between 11 and 14 inches will be fit onto one page. Pages longer than
14 inches are cut off at 11 and continued on the next page. The -L.5
option says to repeat a half inch on the next page (to improve read-
ability).
BUGS
Because POSTSCRIPT does not support the notion of a colormap, 8-bit
palette images produce 24-bit POSTSCRIPT images. This conversion
results in output that is six times bigger than the original image and
which takes a long time to send to a printer over a serial line. Mat-
ters are even worse for 4-, 2-, and 1-bit palette images.
BUGS
Does not handle tiled images when generating PS Level I output.
SEE ALSO
pal2rgb(1), tiffinfo(1), tiffcp(1), tiffgt(1), tiffmedian(1),
tiff2bw(1), tiffsv(1), libtiff(3)
January 27, 1997 TIFF2PS(1)
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