Thread: 603 PDF with CCITT images
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Old 08-29-2011, 02:07 PM   #9
rkomar
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Quote:
Originally Posted by adam l View Post
I have converted a PDF file using IrfanView.
You can choose the compression method for the B/W images.
There are 2 types: deflate (ZIP) and CCITT FAX4.
I will try again.

Which version of software are you using? I have updated to 2.1.1

Adam
I have 2.0.4 on my reader. I uploaded a copy of an old paper of mine that I made into a PDF to my website. You can grab a copy and see if it works under 2.1.1 (and I would definitely like to know if it doesn't, since most of my old technical stuff was converted the same way). The URL is: http://www3.telus.net/rkomar/cer.pdf

I'm a Linux user, so I've never tried IrfanView. My workflow in the conversion is to first convert the scans (in PNG format) to TIFF with CCITT Group4 compression, cleaning them up and aligning them properly along the way. The separate TIFF files are then amalgamated into a single multipage-TIFF file using tiffcp. The multipage-TIFF file is converted to PDF using tiff2pdf. Both tiffcp and tiff2pdf are part of the libtiff package. I usually create a new PDF from the last using ghostscript so that I can add bookmarks and title, author,... info to the file.

I doubt if you will want to use the same tools under Windows, but maybe this will give you some hints on how to go about it with whatever tools you have.
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