On 2009-03-09, Leon Fisk wrote:
On Sun, 8 Mar 2009 17:27:58 -0400, "Ed Huntress"
wrote:

Yes, and I suspect it's intentional. They're playing a dicey game with
copyrights and they have a new project going now, in which they had to spend
$7 million of advertising around the world to let authors know that they're
engaged in an opt-out program, to settle a court suit.

http://www.nytimes.com/2009/03/04/bo...20books&st=cse

I can understand somewhat with stuff still under copyright,
but why do crappy work (a good scan/photo takes the same
amount of time as crappy. Turning & positioning takes most
of the time.) with stuff in public domain? I've looked at
what others have done with this using the djvu format and it
is quite good.

If the book is old enough to have discolorations you can need to
tweak the scan parameters on each page to maximize the contrast in the
print while minimizing the inclusion of changes from the stains and
discolorations. This is especially so if you are scanning to single bit
density (maximum compression possible), though you can get away with
less care when scanning to color -- but the image sizes will be much
larger and much more difficult to compress.

I know this from scanning manuals for various old machine tools.

Given the number of pages in a typical book, having to go
through two or three trial scans for each valid scan can vastly increase
the time the job takes.

Enjoy,
DoN.

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