descreening – best way ?

F
Posted By
frankg
Feb 17, 2005
Views
1486
Replies
6
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Closed
I have to scan a bunch of landscape photos out of an antique photo book (circa 1925) and there is a fine screen (perhaps gravure? ) on the photos. The results of my scans are to be reproduced on a calendar. I’d like to find the best way to deal with the screen.

My flatbed is something of an antique itself (Microtek Scanmaker III with Scanwizard). The software does have a descreen filter (either one of several presets or a custom setting). However the descreen filter "softens" or "blurs" the image which is objectionable on these crisp, large format, sharp photos.

Any suggestions on how I might get the very best results ?

thanks

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U
Uni
Feb 19, 2005
frankg wrote:
I have to scan a bunch of landscape photos out of an antique photo book (circa 1925) and there is a fine screen (perhaps gravure? ) on the photos. The results of my scans are to be reproduced on a calendar. I’d like to find the best way to deal with the screen.

Have you tried printing any of these images, to see if the problem still exists?

Uni

My flatbed is something of an antique itself (Microtek Scanmaker III with Scanwizard). The software does have a descreen filter (either one of several presets or a custom setting). However the descreen filter "softens" or "blurs" the image which is objectionable on these crisp, large format, sharp photos.

Any suggestions on how I might get the very best results ?
thanks
R
RSD99
Feb 19, 2005
Do a web search on the term

halftone moire

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Some interesting finds:

http://www.picturel.com/halftone

http://www.creativepro.com/printerfriendly/story/10744.html

"frankg" wrote in message
I have to scan a bunch of landscape photos out of an antique photo book (circa 1925) and there is a fine screen (perhaps gravure? ) on the
photos.
The results of my scans are to be reproduced on a calendar. I’d like to
find
the best way to deal with the screen.

My flatbed is something of an antique itself (Microtek Scanmaker III with Scanwizard). The software does have a descreen filter (either one of
several
presets or a custom setting). However the descreen filter "softens" or "blurs" the image which is objectionable on these crisp, large format,
sharp
photos.

Any suggestions on how I might get the very best results ?
thanks

R
rubik{remove}
Feb 19, 2005
On Thu, 17 Feb 2005 18:45:43 -0500, "frankg"
wrote:

I have to scan a bunch of landscape photos out of an antique photo book (circa 1925) and there is a fine screen (perhaps gravure? ) on the photos. The results of my scans are to be reproduced on a calendar. I’d like to find the best way to deal with the screen.

My flatbed is something of an antique itself (Microtek Scanmaker III with Scanwizard). The software does have a descreen filter (either one of several presets or a custom setting). However the descreen filter "softens" or "blurs" the image which is objectionable on these crisp, large format, sharp photos.

Any suggestions on how I might get the very best results ?
thanks
this is a simple way to reduce such artifacts it doesn’t work for all pics but maybe worth a try
scan the pics at twice the resolution you require and
then use the image menu to reduce the dpi by half
this doesn’t get rid of them but makes them half the size and sometimes this will but them into the background enough to be unnoticeable
F
frankg
Feb 20, 2005
Thanks for info/suggestions

"frankg" wrote in message
I have to scan a bunch of landscape photos out of an antique photo book (circa 1925) and there is a fine screen (perhaps gravure? ) on the photos. The results of my scans are to be reproduced on a calendar. I’d like to
find
the best way to deal with the screen.

My flatbed is something of an antique itself (Microtek Scanmaker III with Scanwizard). The software does have a descreen filter (either one of
several
presets or a custom setting). However the descreen filter "softens" or "blurs" the image which is objectionable on these crisp, large format,
sharp
photos.

Any suggestions on how I might get the very best results ?
thanks

BA
Bob Allison
Mar 13, 2005
In article <L6aRd.9744$>,
"frankg" wrote:

I have to scan a bunch of landscape photos out of an antique photo book (circa 1925) and there is a fine screen (perhaps gravure? ) on the photos. The results of my scans are to be reproduced on a calendar. I’d like to find the best way to deal with the screen.
<Snip>
Any suggestions on how I might get the very best results ?
thanks

Sometimes rotating the image a few degrees in your scanner when you scan it will reduce the morie patterns that you are describing. You can then un-rotate it with PS


My software never has bugs. It just develops random features.

Bob
In Carmel, CA
VR
Val Ray
Mar 14, 2005
An old trick
Place a penny in each of the corners of your scanner-it will diffuse your screen

-ValRay

On 3/13/05 6:28 PM, in article
, "Bob
Allison" wrote:

In article <L6aRd.9744$>,
"frankg" wrote:

I have to scan a bunch of landscape photos out of an antique photo book (circa 1925) and there is a fine screen (perhaps gravure? ) on the photos. The results of my scans are to be reproduced on a calendar. I’d like to find the best way to deal with the screen.
<Snip>
Any suggestions on how I might get the very best results ?
thanks

Sometimes rotating the image a few degrees in your scanner when you scan it will reduce the morie patterns that you are describing. You can then un-rotate it with PS

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