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Open up Photoshop and load an image.
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Now convert it to black and white by clicking Image>Mode>Grayscale.
You will be told that color information will be discarded. Click OK to
that. Your photo is now a standard black and white one which is just
what we want for this.
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Next, go to the Filter menu, and choose Blur>Smart Blur. Adjust the
zoom (+ and - buttons) so you can see most of your image in the Preview
screen. At the bottom you will see 2 drop down lists. For Quality
choose High.
For
Mode choose Edge Only. Your image will now be black with white outlines (the reverse of what we really want )
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Now play with the two sliders - Threshold and Radius. What you do here can
greatly affect the final result and this is where you will have to do
the most experimenting to get the best results possible. You want
the the lines to be as distinct as possible, especially the fine
ones, but without bleeding. Play around with different settings - you
will see the results immediately in the preview screen. Increasing
Threshold will diminish detailed and fine outlines - i.e.; the higher you
set it, the more black and fewer visible white lines you will see.
Increasing Radius will make the white lines more distinct and thicker.
Once you settle on a setting that looks like it may be
acceptable to you, click OK to accept the change.
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Next, go to the Image menu and point to Adjustments>Invert.
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And there
you have the final result of the settings you made in a reversed format
which should now be black lines on white, instead of white lines on
black. If it doesn't look right - i.e.; some lines are washed out or
bleed out, then go back to play with the Threshold and Radius settings
again. You can just use the Step Backward option in the Edit Menu.
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Once done, you can further improve your sketch by using the pencil and
eraser tools to fill in broken lines and erase unwanted ones.
You can also enhance your sketch by clicking Filter>Sketch and choosing
different effects.
But for coloring pages you would probably want plain white.
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The final
step to make the pages should be obvious - just print them out to an
8x10 size (or whatever size you prefer). By converting multiple images
into black and white sketches you can have enough pages to create a
coloring book for the kids who can have fun coloring ma , pa and a dog
named poo. LOL