Segmented mode scanning

[Phil M]

Hi All. I would like to know if there's any scanning software capable
of segmenting areas of a document to scan part in lineart and part in
halftone?

I have some Black & White printed documents I want to scan which
contain a combination of text and halftone images.

When I scan everything in linart, graphics and text come out very good
and sharp, but images are awful; on the other side, if I scan
everything in halftone/descreen, then images come out very good and
sharp but text and graphics are not that good as if they were scanned
in linart.

Therefore, I'm looking for a scanning software, which will allow me to
select which area of the documents is lineart/text and which areas are
halftone. I guess that for this the scanner should make a 2-pass
scan; one for each mode and then combine. I don't mind the increase
in scanning time as long as the output is for what I'm looking for.

I'm using a CanoScan Lide 35 which can be controlled by its Twain
driver under windowsXP.

Thanks for any suggestions.

 

[Chuck Tribolet]

How many do you have to do? If it's not too many, scan each page twice,
once in each mode. Use Photoshop or whatever to delete what's bad in
each scan, then merge them together (should be able to do that with Photoshop
layers).

That said, there's a market there for SW with some brains to help that
process -- I've seen a lot of crummy scans of old stuff with exactly
this problem.

Also, you may be able to help things by scanning in line art at very high
res.