tiff2fax - convert TIFF for facsimile transmission by HylaFAX
takes TIFF input and generates a TIFF Class F image file
suitable for facsimile transmission. It is usually invoked by the
scheduler process, faxq
(8). The default implementation
uses the tiffcheck
(8) 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 following operations are recognized:
- Write Group 3 1D-encoded data to the output file.
- Write Group 3 2D-encoded data to the output file.
- 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
- -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.
/usr/sbin/tiffcheck TIFF file conversion examiner
/var/spool/hylafax/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
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.