On 27/08/2021 22:10, Al Kossow via cctalk wrote:
On 8/27/21 2:05 PM, Paul Koning via cctalk wrote:
For material such as the RSX manuals you
mentioned, the tool needed
is a compression algorithm that handles color with hard edges
faithfully.? Basically that means a lossless compression scheme.?
That should be fine, since pages like that should compress very well,
at least if the scan has been touched up just a bit to make the page
background reasonably pure white.
Ethan worked on a filter a long time ago for DEC manuals. J David
Bryan's work was mentioned recently.
I did see it, but it didn't look like a cookie-cutter recipe. I'd be
happy to be proved wrong though. What I don't want to have to do is
manually process each page (beyond having to decide which to scan in
colour). I would be looking for an algorithm or process that I can just
point at scanner data for a page and have it spit out the optimised PDF
page. I'm sure that will appear at some stage, but I don't think it
exists yet. The RSX-11M/M-PLUS Error Logging Manual, for example, has
somewhere between 20 and 50 pages with colour present. I can pick those
out and re-scan them and I can relatively easily merge those pages with
the original B&W scan, but if I have to manually examine each page, I'll
never make it to whatever manual is in my list after that one :-)
It is trivial to add page bookmarks with Eric Smith's tumble with the
-b %F option
Thanks, I'll look into tumble.
antonio at acarlini.com