sgi2fax(1) [linux man page]

SGI2FAX(1)						      General Commands Manual							SGI2FAX(1)

NAME

       sgi2fax - convert a Silicon Graphics image file for facsimile transmission

SYNOPSIS

       /usr/lib/fax/sgi2fax [ options ] files...

DESCRIPTION

       sgi2fax	converts  Silicon  Graphics format images to bilevel TIFF Class F images in preparation for transmission as facsimile.	sgi2fax is
       not normally invoked directly; it is usually run by sendfax(1) when an SGI image file is submitted for transmission.

       Images are converted by scaling them to fill the guaranteed reproducible area on a  default  page.   Each  RGB  pixel  p  is  converted	to
       greyscale according to:
	    pr * %r + pg * %g + pb * %b
       where  %r, %g, and %b default to 30, 59, and 11, respectively.  Greyscale images are then process with a high pass filter and dithered to a
       bilevel image.  The resultant image are written as a TIFF Class F document.

       By default, the output image is created with 204 dots/inch horizontal resolution and 98 lines/inch vertical resolution.	The image is writ-
       ten as Group 3 1D-encoded data.

OPTIONS

       -1     (-2) Write the image as Group 3 1D- (2D-) encoded data.

       -b %b  Set the %b parameter used to convert color pixel values to greyscale pixel values.

       -g %g  Set the %g parameter used to convert color pixel values to greyscale pixel values.

       -l     Generate an image at 98 lines/inch vertical resolution.  know as low resolution.

       -m     Generate an image at 196 lines/inch vertical resolution.

       -o file
	      Write output to file instead of the default file named sgi.fax.

       -r %r  Set the %r parameter used to convert color pixel values to greyscale pixel values.

       -s size
	      Set  the output size according to the named page size.  Images are normally created with a system-default page size (usually letter-
	      size pages, 8.5" by 11", for sites in North America).  Alternate page sizes are specified symbolically  using  either  the  name	or
	      abbreviation  of	an entry in the pagesizes(5F) database; e.g.  a3 (ISO A3), a4 (ISO A4), a5 (ISO A5), a6 (ISO A6), b4 (ISO B4), na-
	      let (North American Letter), us-leg (American Legal), us-led (American Ledger), us-exe (American Executive), jp-let  (Japanese  Let-
	      ter), and jp-leg (Japanese Legal).  Comparisons are case-insensitive and any match of a substring of the full page-size name is suf-
	      ficient; e.g. ``legal'' would match ``American Legal''.

FILES

       /usr/lib/fax/pagesizes  page size database

SEE ALSO

       hylafax-client(1), sendfax(1), hylafax-server(5F)

								   June 14, 1994							SGI2FAX(1)

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TIFF2FAX(8C)															      TIFF2FAX(8C)

NAME

       tiff2fax - convert TIFF for facsimile transmission by HylaFAX

SYNOPSIS

       /var/spool/fax/bin/tiff2fax [ options ] file

DESCRIPTION

       bin/tiff2fax  takes  TIFF  input and generates a TIFF Class F image file suitable for facsimile transmission.  It is usually invoked by the
       HylaFAX scheduler process, faxq(8C).  The default implementation uses the tiffcheck(8C) program and tools from the  freely  available  TIFF
       software distribution to implement the conversion operations.

       This  script  can modify outgoing facsimile, such as watermarking, To do this create a shell script etc/FaxModify in the spooling area that
       alters the document.

OPTIONS

       The following operations are recognized:

       -1	 Write Group 3 1D-encoded data to the output file.

       -2	 Write Group 3 2D-encoded data to the output file.

       -3	 Write Group 4 MMR-encoded data to the output file.

       -m pages  Set the maximum number of pages that are permitted in the output file.  If more pages are present  in	the  input  document  then
		 abort processing.

       -o file	 Write output to the specified file instead of the default foo.tif filename.

       -w width  Set the output page width, in pixels.	By default, pages are 1728 pixels wide.

       -l length Set the output page length in millimeters.  By default, pages are 297 millimeters long.

       -r vres	 Set the vertical resolution, in lines/inch, at which to image the POSTSCRIPT.

FILES

       /usr/sbin/tiffcheck	    TIFF file conversion examiner
       /var/spool/fax/bin/ps2fax    POSTSCRIPT RIP for doing complicated conversions
       /usr/bin/tiffcp		    for converting compression schemes
       /usr/bin/tiff2ps 	    for colorspace and/or image size conversions

BUGS

       Conversions that require re-imaging and resizing may result in images that are poorly placed on the page.

       There is no way to control how images are treated when they are resized; e.g. the original aspect ratio is not always maintained.

SEE ALSO

       sendfax(1), faxq(8C), hylafax-server(5F)

								   May 12, 1996 						      TIFF2FAX(8C)

Linux and UNIX Man Pages

sgi2fax(1) [linux man page]

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