Graphics Programs Reference
In-Depth Information
Open the image (
Ch4_middle school picture
) found in the Practice Images folder.
1.
2.
Images with this type of issue often have damage to one of the color channels
(usually the blue one). We'll examine the channels in this image to see what
we're up against (Image Menu
➤
Colors
➤
Components
➤
Decompose).
This will create a separate file and extract the channels as layers (Figure
4-46
).
Figure 4-46.
The damage is apparent on the Blue color channel
3.
As you toggle through each layer, you'll see the Blue channel has some tonal
damage.
4.
Close the decomposed image without saving. (We only needed it long enough to
find the damaged channel.)
5.
Go back to the practice image, duplicate the background layer, and rename it
Color Correction
.
6.
Using the Freehand tool (F) with the Feather Radius set to 25 pixels, draw a
rectangle around the damaged area of the image, extending slightly beyond the
damaged portion (Figure
4-47
).
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