Graphics Programs Reference
In-Depth Information
■
gently cleaning a photograph, slide, or negative with a clean, lint-free cloth can go a long way toward
removing loose dust (as we saw in Chapter 2) and can reduce the digital-editing workload a great deal.
Note
Tutorial 25: Removing Stains
Stains on old photographs are fairly common, such as in the example in Figure
6-14
. Even though it looks
rather nasty, this one can be removed fairly easily by separating the image into its RGB channels.
Figure 6-14.
An old photograph with a rust-colored stain
To correct this image, follow these steps:
Open the image (
Ch6_stained photo
) found in the Practice Images folder.
1.
2.
Separate the image using the
Decompose
feature (Image Menu
➤
Colors
➤
Components
➤
Decompose). This will create a separate file and extract the
channels as layers (Figure
6-15
).
Be sure to use the default RGB color model and leave the Decompose by layers option checked.
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