Odd ghostscript problem (ps to PDF conversion)

I'm occasionally converting scanned images to PDF files, people seem to
be able to read/print them easier.

I have two scripts that basically run through the scanned .png files and
spit out a single PDF in the end. This works for LETTER size, but not
for LEGAL size, and I don't know why. What happens is this: The scan has
the proper format (legal size), conversion to pnm and then ps gives me a
properly legal sized postscript file - but as soon as ghostscript
processes it, the document gets shifted down by an inch or so, and an
inch of information gets lost at the end of the page. Why? I wish I
knew. The script is as follows:

#!/bin/bash
cd ~scanner

for filename in `ls *.png` ; do
echo -n "Converting $filename to PDF ... "
pngtopnm $filename | pnmtops -imagewidth=8.5 -imageheight=14 |
ps2pdf14 -sPAPERSIZE=legal - `echo $filename|cut -d. -f1`.pdf
rm $filename
echo "done. Source deleted."
done

echo -n "Concatenating PDF files ... "
gs -dBATCH -dNOPAUSE -dCompatibilityLevel=1.4 -q -sDEVICE=pdfwrite
-sPAPERSIZE=legal -sOutputFile="/mnt/server/PDF/ScanImage `date +"%a %F
%H.%M.%S"`.pdf" `ls *.pdf`
echo "done."
echo -n "Cleaning up ... "
rm *.pdf
chmod -R a+rw "/mnt/server/PDF"

echo "done."


Does anyone see something obviously wrong? I don't :(

Jens
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Re: Odd ghostscript problem (ps to PDF conversion)

El Jueves, 27 de Julio de 2006 13:48, escribi=F3:
> I'm occasionally converting scanned images to PDF files, people seem =
to
> be able to read/print them easier.
>
> I have two scripts that basically run through the scanned .png files =
and
> spit out a single PDF in the end. This works for LETTER size, but not
> for LEGAL size, and I don't know why. What happens is this: The scan =
has
> the proper format (legal size), conversion to pnm and then ps gives m=
e a
> properly legal sized postscript file - but as soon as ghostscript
> processes it, the document gets shifted down by an inch or so, and an
> inch of information gets lost at the end of the page. Why? I wish I
> knew. The script is as follows:
>
> #!/bin/bash
> cd ~scanner
>
> for filename in `ls *.png` ; do
> echo -n "Converting $filename to PDF ... "
> pngtopnm $filename | pnmtops -imagewidth=3D8.5 -imageheight=3D14 |
> ps2pdf14 -sPAPERSIZE=3Dlegal - `echo $filename|cut -d. -f1`.pdf
> rm $filename
> echo "done. Source deleted."
> done
>
> echo -n "Concatenating PDF files ... "
> gs -dBATCH -dNOPAUSE -dCompatibilityLevel=3D1.4 -q -sDEVICE=3Dpdfwrit=
e
> -sPAPERSIZE=3Dlegal -sOutputFile=3D"/mnt/server/PDF/ScanImage `date +=
"%a %F
> %H.%M.%S"`.pdf" `ls *.pdf`
> echo "done."
> echo -n "Cleaning up ... "
> rm *.pdf
> chmod -R a+rw "/mnt/server/PDF"
>
> echo "done."
>
Try to do not specify paper size on ghostcript, in some countries there=
exist=20
a paper size so called "oficio" too like to "legal" that has about 1 in=
ch=20
(2cm) of less paper than "legal" we use to increase in our documents th=
e=20
footer margin to fit on "officio", I don't know how this should be=20
translated.

And why you do not try to use psutils, for doing everything including t=
he=20
join, and later just convert ps to pdf.

:)

--=20
Gustavo Guillermo P=E9rez
Compunauta uLinux
www.compunauta.com
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