User Guide

Corel Painter 221
solid channel, without clear
delineation between the
selected and protected areas.
• Original Luminance produces
a channel based on the clone
source’s light and dark areas.
This option lets you import an
image to the channel. If no
clone source is selected, Corel
Painter uses the current pat-
tern.
• Current Color creates a chan-
nel based on pixels of the cur-
rent primary color. Areas of the
current color are protected; the
rest of the image is selected.
You might want to use the
Dropper tool to pick a color
from the image before using
the Current Color option.
If you want to invert the channel,
enable the Invert check box.
Note
•
A channel can have 256 values in it,
like a grayscale image. Inverting a
channel is equivalent to creating the
negative of a grayscale image. For
example, a pixel with 80% luminance
will have 20% luminance when inverted.
A pixel with 30% luminance will have
70% luminance when inverted.
An image (above) and the channels created
using image luminance (bottom-left) and
inverted image luminance (bottom-right).
To generate a color-based
channel:
1 On the Channels palette, do one of
the following:
• To generate a new channel,
choose the RGB channel from
the list.
• To replace a channel, choose it
from the list.
2 Click the palette menu arrow, and
choose New from Color Range.
3 With the Color dialog box open,
click in the document window to
pick a color.
The color you select is the middle
of the range of colors used to create
the channel.
4 In the Color dialog box, adjust the
H Extents (hue), S Extents
(saturation), and V Extents (value)
sliders.
These sliders control the selected
range. You can drag the limits of
the range in either direction.
5 Adjust the H Feather (hue), S
Feather (saturation), and V
Feather (value) sliders to control
the feathering at the edges of the
color space extents.