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October 2007

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2007.10.04 18:47 "Pink pages with tiff2pdf -j", by Chris Gentle
2007.10.04 19:14 "Re: Pink pages with tiff2pdf -j", by Bob Friesenhahn
2007.10.04 20:33 "Re: Pink pages with tiff2pdf -j", by Ed Grissom
2007.10.04 21:34 "Re: Pink pages with tiff2pdf -j", by Frank Warmerdam
2007.10.04 21:40 "Re: Pink pages with tiff2pdf -j", by Ed Grissom
2007.10.05 20:22 "Re: Pink pages with tiff2pdf -j", by Chris Gentle

2007.10.04 18:47 "Pink pages with tiff2pdf -j", by Chris Gentle

Hi.  I hope someone can help me out.  I have been trying to scan a
bunch of old paperwork and convert this stuff to PDF.  Basically
I've been scanning individual pages into *.tif files and converting
them to PDF as follows:

tiffcp *.tif /tmp/zzz.tif
tiff2pdf -j /tmp/zzz.tif > zzz.pdf

Quite pleased with the results, I scanned happily for several
months, carefully checking the results of each pdf file with kpdf
under KDE and then throwing away the original papers.

Then, one day after a Gentoo Linux update my PDF files suddenly
started showing up pink.  It looked like there was a translucent
pink layer across the top of each page.  I soon found that KPDF had
been updated.

To my surprise, I found that all of the scans I had been working on
for so long all appeared to be pink in Acroread, ghostscript, gimp,
etc.  I even tried converting my PDF files to other formats with
ImageMagick but the results were still pink.

I downgraded back to KPDF 3.5.5 and it still displays the images
properly.  I feel like this is a bug in the tiff2pdf code and that
kpdf suffered from the same bug and displayed the PDF files
correctly.

I'm hoping someone who knows about the internals of this stuff can
tell me how I can salvage all of the scans that I've converted to
PDF.  If KPDF 3.5.5 can display the images properly then the data I
need is still in those PDF files, I just need to turn off that pink
layer.

Here's an example of the pink page, converted to .jpg due to size:

        http://home.hiwaay.net/~gentlec/pink.jpg

Any help would be appreciated.  I'd also like to know whether anyone
can reproduce this with tiff2pdf -j.  I'm currently using
tiff-3.8.2.

Thanks.

-- 
Chris