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moire'

 
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Dan G
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Posted: Sat Nov 12, 2005 8:02 pm    Post subject: moire' Reply with quote

Just replaced a Canon with a HP scanner. The HP seems to have more problems
with moiré on some materials.

There's a "Descreen" filter in the driver that has limited effect on the
final output.

What do you-all do to prevent and treat moiré?
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CSM1
Guest





Posted: Sat Nov 12, 2005 10:40 pm    Post subject: Re: moire' Reply with quote

"Dan G" <none@12345.org> wrote in message
news:sfydnZ3H6oczaOjenZ2dnUVZ_vudnZ2d@comcast.com...
Quote:
Just replaced a Canon with a HP scanner. The HP seems to have more
problems
with moiré on some materials.

There's a "Descreen" filter in the driver that has limited effect on the
final output.

What do you-all do to prevent and treat moiré?



Maybe you can get some idea here:
http://www.scantips.com/basics06.html

--
CSM1
http://www.carlmcmillan.com
--
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Dan G
Guest





Posted: Sat Nov 12, 2005 11:40 pm    Post subject: Re: moire' Reply with quote

Thanks, exactly what I needed!



"CSM1" <nomoremail@nomail.com> wrote in message
news:JVodf.16309$q%.3939@newssvr12.news.prodigy.com...
Quote:
"Dan G" <none@12345.org> wrote in message
news:sfydnZ3H6oczaOjenZ2dnUVZ_vudnZ2d@comcast.com...
Just replaced a Canon with a HP scanner. The HP seems to have more
problems
with moiré on some materials.

There's a "Descreen" filter in the driver that has limited effect on the
final output.

What do you-all do to prevent and treat moiré?



Maybe you can get some idea here:
http://www.scantips.com/basics06.html

--
CSM1
http://www.carlmcmillan.com
--

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Hans-Georg Michna
Guest





Posted: Sun Nov 13, 2005 8:46 pm    Post subject: Re: moire' Reply with quote

On Sat, 12 Nov 2005 07:02:49 -0700, Dan G wrote:

Quote:
Just replaced a Canon with a HP scanner. The HP seems to have more problems
with moiré on some materials.

There's a "Descreen" filter in the driver that has limited effect on the
final output.

What do you-all do to prevent and treat moiré?

Dan,

some time ago I used a program called Picture Publisher by
Micrografx. This program had an excellent moiré filter which
used clever mathematics to obtain a precise model of the moiré
pattern and deducted it perfectly without losing any visible
sharpness.

Unfortunately I haven't seen anything like it ever since, and I
had to drop Picture Publisher because of its excessive number of
defects.

The moiré filter in Paint Shop Pro is a joke in comparison. It
is only a soft filter that essentially doesn't remove the moiré
at all, it just reduces it along with any other high frequencies
by applying a low pass filter, making the whole picture soft.

While we're at it, does anybody know a third-party tool that
does what Picture Publisher did?

Hans-Georg

--
No mail, please.
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Don
Guest





Posted: Sun Nov 13, 2005 10:00 pm    Post subject: Re: moire' Reply with quote

Hans-Georg Michna <hans-georgNoEmailPlease@michna.com> wrote in
news:rhjen195fqcb6sul9mj4eol8n6n761ouu6@4ax.com:

Quote:
On Sat, 12 Nov 2005 07:02:49 -0700, Dan G wrote:

Just replaced a Canon with a HP scanner. The HP seems to have more
problems with moiré on some materials.

There's a "Descreen" filter in the driver that has limited effect on
the final output.

What do you-all do to prevent and treat moiré?

Dan,

some time ago I used a program called Picture Publisher by
Micrografx. This program had an excellent moiré filter which
used clever mathematics to obtain a precise model of the moiré
pattern and deducted it perfectly without losing any visible
sharpness.

Unfortunately I haven't seen anything like it ever since, and I
had to drop Picture Publisher because of its excessive number of
defects.

The moiré filter in Paint Shop Pro is a joke in comparison. It
is only a soft filter that essentially doesn't remove the moiré
at all, it just reduces it along with any other high frequencies
by applying a low pass filter, making the whole picture soft.

While we're at it, does anybody know a third-party tool that
does what Picture Publisher did?

Hans-Georg


I have a version of PP (Think 6.0).
It was not the upgraded version and came for free with my Mustek (now
dead) scanner.
I don't recall this version of PP having the moire, however guess I
could be mistaken and just missed the option.
In any event, I have the CD.
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Hans-Georg Michna
Guest





Posted: Mon Nov 14, 2005 3:05 am    Post subject: Re: moire' Reply with quote

On Sun, 13 Nov 2005 16:00:48 GMT, Don wrote:

Quote:
I have a version of PP (Think 6.0).
It was not the upgraded version and came for free with my Mustek (now
dead) scanner.
I don't recall this version of PP having the moire, however guess I
could be mistaken and just missed the option.
In any event, I have the CD.

Don,

I don't know whether you feel like installing that heavyweight
program just to try the moiré removal filter, but if you do, let
us all know how it goes. I thought it was very impressive.

Hans-Georg

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No mail, please.
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