On Tue, 20 Mar 2018 12:50:12 +0100 Mattis Lind via cctalk <cctalk@classiccmp.org> wrote:
> So I have imaged the three disks I found using ImageDisk: > http://storage.datormuseum.se/u/96935524/Datormusuem/TEXAS.zip > > Then I scanned one of the manuals. UCSD Pascal : > http://storage.datormuseum.se/u/96935524/Datormusuem/UCSD-Pascal.pdf > > The problem is that manual has text in red/brown and black. I scanned > it in colour. However the actual colour of the scan varies a bit > between pages. (Maybe because there are two sensors, one for top side > and one for bottom side.) > And the scan get very big. > > Is there a way to create filter this pdf to use three colours and > possibly compress it better? What is the best way to deal with scans > of documents with coloured text. I know many DEC manuals that has > coloured text as well. > > /Mattis > --snip-- I use Acrobat Professional to both scan, OCR and optimize PDF's. It works very well. I do this for many vintage manuals that had been previously scanned that I've downloaded that have not been OCRed or optimized. BTW: OCR works best when the manuals are scanned for color or grey scale at 600bpi or better. Cheers, Lyle -- 73 AF6WS Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"
