how to remove dithering in scanned images?

Scanning photos/illustrations at high resolution (e.g. 400dpi) results in
visible dithering dots. Is there a software to change the dithering into
solid color without making the image blurry?

Could you post it somewhere so we could see the "dithering dots"?

Meanwhile, try converting to LAB, then apply the "median" filter to the a
and/or b channels if the dither appears there.

Maris

peter wrote:
Scanning photos/illustrations at high resolution (e.g. 400dpi)
results in visible dithering dots. Is there a software to change the
dithering into solid color without making the image blurry?

Maris V. Lidaka Sr. wrote:
Could you post it somewhere so we could see the "dithering dots"?

Meanwhile, try converting to LAB, then apply the "median" filter to
the a and/or b channels if the dither appears there.

Maris

peter wrote:
Scanning photos/illustrations at high resolution (e.g. 400dpi)
results in visible dithering dots. Is there a software to change
the
dithering into solid color without making the image blurry?

Look at scantips.com. Good information there.

--
Frank ess

Try scanning the image on the diagonal, too. www.scantips.com, referred to
above, has a number of suggestions.

Maris

Matt Ion wrote:
peter wrote:
Scanning photos/illustrations at high resolution (e.g. 400dpi)
results in visible dithering dots. Is there a software to change the
dithering into solid color without making the image blurry?

Sounds like you're talking about a "screening" effect that you'll get
if scanning halftoned prints, like in magazines and newspapers. It's
caused by the scanning resolution not matching the print's dot
resolution. Most scanning software should have a "descreening"
function, try using that. Or play with the resolution you're scanning
at to get something that more closely matches the print's resolution
or a multiple of it.