Moire Patterns

MA
Posted By
Michael_A_P_Temple
May 21, 2004
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142
Replies
3
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Closed
Can Photoshop Elements 2.0 deal with the patterns one obtains after scanning newspaper photographs. These result in an image covered in dots.
(I am using Windows 98).
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NS
Nancy_S
May 21, 2004
Michael,

Your scanner should have a feature you can set called Descreen which helps with some scanning situations, like illustrations from books. Sometimes scanning with the image somewhat rotated on the scanner bed is helpful also.
R
Roger
May 23, 2004
wrote in message
Can Photoshop Elements 2.0 deal with the patterns one obtains after
scanning newspaper photographs. These result in an image covered in dots.
(I am using Windows 98).

The Gaussian Blur filter may reduce/remove the effect.
Filter/Blur/Gaussian Blur/
With the preview window select a suitable value to minimise the dot pattern and not blur the image.
Around 2.5 is usually about right.

Some scanner software had built in filters:
Newspapers @ 75 lines per inch
Magazine @ 133 lines per inch
Art print @ 175 lines per inch

Roger
W
Widescreen
May 23, 2004
Michael,

The Gaussian Blur filter may reduce/remove the effect.
Filter/Blur/Gaussian Blur/
With the preview window select a suitable radius value to minimise the dot pattern and not blur the image.
Around 2.5 pixels is usually about right.

My old Umax scanner software had built in filters:
Newspaper @ 75 lines per inch
Magazine @ 133 lines per inch
Art print @ 175 lines per inch

Roger

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