selective descreening in Ai

[Gregory C]

here's the problem.

I'm scanning magazine articles. the articles contain both text and images. the images would look better if they were descreened. the text looks terrible if it's descreened because most of the text is not multi-film; it is instead a single block colour. when descreened, the text becomes fuzzy. to overcome this, I need to scan twice; once without descreening and once with, and then copy/paste the images onto the non-descreened document.

so for the future, I would love to be able to select sections of the document to descreen with everything else not being descreened. for example, I open the Descreen dialog, set my descreening parameters, draw marquee/s around the image/s and close the dialog. SF descreens the images but leaves everything else untouched.

additionally, I find it difficult to estimate the screen value of the magazine/newspaper I'm scanning. I usually have to try different screen values and take screen-shots of the Preview Moir?s to compare before choosing a final value. might there be a better way to do this? I've seen discussion about scanning at a high resolution and then counting the dot groups in one inch but that's harder than it sounds.

(I'm using SF Ai Studio with a Microtek ScanMaker 5700 on OS X Tiger)

regards,
Gregory

[LSI_Marquardt]

Dear Gregory,

with the new descreening soon to released - images and text
look better than with the old descreening - in a later future
the descreening will also be adaptive - so edges and text don't get blurred.

The new descreening also features a half automatic, allowing
detection of the screen in the preview - and a full automatic
allowing you to descreen an image without the need to set something
in the descreen dialog ...
>I've seen discussion about scanning at a high resolution and then >counting the dot groups in one inch but that's harder than it sounds.
Thats what I did for verifying the new descreen algorithm, which uses frequency analysis to detect the screen - NO more counting necessary,
also the rulers to analyse screens are no more necessary...

Best wishes,
Philipp Marquardt, Developer LSI

[Gregory C]

wow. that'll be great.