Scanning Newspapers and magazines

L
Posted By
lyndatom
Nov 28, 2003
Views
373
Replies
7
Status
Closed
I am using Photoshop CS and trying to scan a newspaper article with an Epson 1200U. After scanning, I get little squares throughout the document. I know there is a way to scan and not get these squares, but don’t know how.

Does anyone know what I need to do? I know this also happens with a magazine.

Please respond to my email address

Thanks you one and all.
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magazine scan

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Colin_Walls
Nov 28, 2003
Where do you get these squares? Just in pictures?

I suspect it’s something to do with the relationship between the screen pitch of the newprint and the scanning resolution. Does it change if you alter the scanning resolution? What value are you using?
S
Sousa
Nov 28, 2003
:

Please respond to my email address

Posting answers in a forum will help people to find an answer on the same problem throu research without opening a new Thread…
L
larry
Nov 28, 2003
Or scan the paper at an angle and straighten in Photoshop. Also, make sure to put down a black card over the area you’re scanning so the other side of the paper doesn’t show through.

Larry Berman
DM
Don_McCahill
Nov 28, 2003
Are you using an OCR program to convert the scanned image to text? If so, the little squares are probably characters that could not be recognized. It means your copy was not aligned straight, your resolution is too low, or the original was a bad quality.
SF
Scott_Falkner
Nov 28, 2003
The squares are the result of the halftone pattern used to print the image and simulate continuous tones. You will not be able to reproduce the image with the same quality it was printed, but you can improve what you have.

Scan at a very high resolution, like 600 ppi, and do not use any descreening software in your scanner. You will be beter off doing that yourself.

Once the scan in complete, zoom in to 100% and use the Noise->Median filter. Increase the radius one pixel at a time until the dot pattern is almost gone, then click OK. Do it again, this time with a radius of 1 ot 2 pixels.

A little sharpening will put back a bit of detail, but too much will restore some of the pattern you just removed.

Now resample down to the required resolution.
LS
Loren_Smith
Nov 28, 2003
If these squares are indeed the halftone pattern (and it sounds like they are), you may want to check the "Photoshop FAQ Topics" in this forum. Look for a thread called "De-Screening in Photoshop". This gives you some more info on how to deal with this issue.

This issue is probably also covered in your scanner software help file. You could look there for halftone pattern or moiré.

Good luck,

Loren
BO
Burton_Ogden
Nov 29, 2003
lyndatom,

If the halftone screening is your problem, Focus Magic does the best job of descreening of anything I have tried:

<http://www.focusmagic.com/exampledespeckle.htm>

— Burton — (not associated with Focus Magic)

How to Master Sharpening in Photoshop

Give your photos a professional finish with sharpening in Photoshop. Learn to enhance details, create contrast, and prepare your images for print, web, and social media.

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