Mailinglist Archive: opensuse (1473 mails)

[Adam Tauno Williams <awilliam@xxxxxxxxxxxxx>]

On Sat, 2009-06-27 at 22:32 -0500, David C. Rankin wrote:
> On Saturday 20 June 2009 03:28:07 am Carlos E. R. wrote:
> > On Thursday, 2009-06-18 at 15:51 -0700, Randall R Schulz wrote:
> > > On Thursday June 18 2009, Carlos E. R. wrote:
> > > > On Thursday, 2009-06-18 at 16:36 -0400, Greg Freemyer wrote:
> > > > > > > Looks like it only goes up to 600x600 dpi optical, though.
> > > > > > For document archive 600x600 is overkill.
> > > > > Typically 200x200 is used and 300x300 is used for high quality.
> > > > > Assuming your coming from normal paper docs.
> > > > If I were scanning my magazine collections, with photos, I would use
> > > > 600dpi minimum, so that I could print a page later as good as the
> > > > original.
> > > I agree, and 600 dpi won't get you a particularly faithful reproduction.
> > > Phototypsetting equipment realizes 2400 DPI, typically.
> > 600 dpi happens to be my printer resolution, so going further would be
> > pointless ;-)
> > > > Which makes me wonder if it could be possible to scan a page with
> > > > different resolutions for text and images, automatically.
> > > > Maybe in the future.
> > > > Or at least store it differently. Perhaps DjVu... but the available
> > > > open tools for creating djvu files are far from optimal.
> > > I'm a little curious what Google and ACM (to name only two) use to
> > > digitize print collections. The results render well and, what's much
> > > more impressive are OCR-ed quite well, too. ACM's entire digital
> > > library (most of which predates digital originals) is searchable even
> > > when the original had to be scanned and OCR-ed.
> > Yep. Good OCR for me is almost impossible to achieve, but these big chaps
> > seems to have it solved.
> > Djvu format, by the way, can store B/W for text, color for photos, and
> > text for the OCR, all in the same file and for each page. In theory, at
> > least: with the open tools we have that's almost impossible to get. The
> > better tools are not open.
> > It is a very good format for scanned material, but it doesn't seem to
> > catch :-?
> Just to add to the OCR discussion, I have had good luck with tesseract. I use 
> it as part of our hylafax/avantfax fax server that automatically does OCR on 
> incoming faxes at our office....

How about posting your Hylafax faxrcvd script so other can use it as a
template?  Or a link if you used some site/howto for setting it up.
-- 
OpenGroupware developer: awilliam@xxxxxxxxxxxxx
<http://whitemiceconsulting.blogspot.com/>
OpenGroupare & Cyrus IMAPd documenation @
<http://docs.opengroupware.org/Members/whitemice/wmogag/file_view>

-- 
To unsubscribe, e-mail: opensuse+unsubscribe@xxxxxxxxxxxx
For additional commands, e-mail: opensuse+help@xxxxxxxxxxxx