
Alpha Channels | 565
To create a blank channel
• In the Channels panel, do one of the following:
•
Click the Channel options button , and choose New.
•
Click the New Channel button .
To copy a channel
1 In the Channels panel, choose a channel from the list.
2
Click the Channel options button , and choose Duplicate.
3 In the Duplicate Channel dialog box, enable the New Alpha Channel option.
You can also copy a channel to an existing channel, so that the existing channel is replaced. To do
this, enable the Replace Existing Alpha Channel option, and choose the existing channel from
the list box.
Generating channels automatically
Corel Painter can automatically generate a channel based on the light and dark areas of a number of
sources, including paper, pattern, and clone source. For example, you can create a channel based on the
luminance values of a clone. You can also create a channel based on a range of colors. These methods are
similar to automatically generating pixel-based selections. For more information, see “Creating pixel-based
selections” on page 583.
An image (left), the channels created using image
luminance (middle), and inverted image luminance (right).
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