Information on image descreening.

Why we use descreening

There may come a time when something important is printed, or displayed in a magazine or newspaper that you want to scan into your computer to save or manipulate. This may at first seem to be a simple process when you go about setting up your scan. What could be easier than just putting the document into the scanner, and then scanning it into a computer? Well many people don’t understand that the images that appear so clean and crisp in the magazine or newspapers are printed using a method known as halftoning. Those photos are printed using a series of overlapping dots that fool your eyes into seeing more colors than are actually there. Because of these overlapping dots, scanning these documents or images will produce something known as Moiré pattern (pronounced more-ay).

A Moiré pattern happens when two identical patterns of lines, circles, or array of dots are overlapped with imperfect alignment creating an interference pattern (resembles an optical illusion). Scanning these images into the computer will result in a wavy pattern that garbles the original image leaving you with a useless image. What makes things worse is scanning the image or document slightly off alignment can increase the effects of this wavy pattern, not only that, but the pitch of the scanners sensors will enhances the pattern even more. This will happen with any scanner, so don’t go blame it on the manufacturer just yet for the pitch of the scanner sensors.
To counter this attack on our visual spectrum Art-Scan was designed with two counters to this Moiré pattern. Art-Scan was designed with a descreening function that when used removes the halftone dot pattern from the printed material during scanning by defocusing the image. This effectively eliminates the Moiré pattern and the color shifting patterns. The downside to this process is the image will become slightly less detailed due to the blurring effect caused by the descreening process. This is where Art-Scan’s Sharpen Image setting comes in. By setting the unsharp mask after performing a descreening operation the image can be restored to its original sharpness.

Information on image descreening.


2006 December « Diva in Demand

"Madea made a reference. She said that she always puts people into categories like a tree. Some people, MOST people in the world, are leaves. Their only purpose is to shift when the wind changes and provide shade. When the seasons change, they die and fall off…..just like the leaves on a tree. So when the seasons of your life change the leaf friends you have will fall off. Stop trying to hold on to them.

Then there are the branches. Those are the tricky ones because you can have a friend that you think is strong and sturdy and as soon as you step out there on them, they break….just like that branch. But if you have you some root friends they aren’t going anywhere. Now think about it, a tree has thousands of leaves and hundreds of branches but it may only have 2 or 3 strong roots. The same applies to your friends AND THAT’S OKAY."

2006 December « Diva in Demand:


Lyrics - I'll Make a Man Out of You Lyrics

Tranquil as a forest
But on fire within
Once you find your center
you are sure to win
You're a spineless, pale
pathetic lot
And you haven't got a clue
Somehow I'll make a man
out of you

I'm never gonna catch
my breath
Say good-bye to those
who knew me
Boy, was I a fool in school
for cutting gym
This guy's got 'em
scared to death
Hope he doesn't see
right through me
Now I really wish that I
knew how to swim

(Be a man)
We must be swift as
the coursing river
(Be a man)
With all the force
of a great typhoon
(Be a man)
With all the strength
of a raging fire
Mysterious as the
dark side of the moon

Lyrics - I'll Make a Man Out of You Lyrics: