This tutorial introduces
you to one of Corel PHOTO-PAINT's most important features
Select a topic:
Before you can use masks to make selections, you must understand
some basic concepts.
Select a topic:
Learn about masks and selections
Learn about color-sensitive masks
When you select part of an image using a tool from the Mask Tools
flyout, the area you select is editable and the area surrounding
the selection is masked or protected.
In the following image, the area inside the square is editable
and the rest of the image is masked. Changes that you make to
the image affect the area inside the square only.
Selects rectangluar shapes on your image.
Selects circular or elliptical shapes on your image.
Selects irregular shapes on your image using a combination of
straight line segments and curves.
Selects an irregular shape on your image by painting over it.
Selects colors within a defined area on your image.
Selects areas on your image based on contrasting colors.
Selects adjacent colors on your image.
By default, mask marquees are visible on your images; however,
you can hide the marquees to display a more accurate representation
of your image in the Image Window. Simply click the Marquee Visible
command in the Mask menu to show or hide the mask marquee.
If a check mark appears beside the command, the marquee is visible;
if a check mark does not appear beside the command name, the marquee
is hidden.
Use the Normal mode (default) to create a single mask on your
image. Use the Additive mode to add to the selected areas on your
image. Use the Subtractive mask mode to remove sections from the
selected areas on your image. And use the XOR mode to create complex
masks in which overlapping areas are protected.
You can access the mask modes in any of the following ways:
In fact, you can save many different masks in mask channels and
alternate among them as you work on an image. Mask channels are
displayed in the Channels Docker window.
Because mask channels are only temporary storage areas, they are
no longer available when you open another image. If you want to
save masks so that they can be applied to any image at any time,
you can save them to disk.
Click here to learn more about masks.
Select a topic:
Click here to open a sample image.
The area that you selected is now editable. This means that you
can apply paint strokes or special effects to that area without
affecting the rest of the image.
The best way to test your selection is to paint across the entire
image using one of the Brush tools.
Click here to open a sample image.
The area enclosed by the circular marquee
is now editable. Because you created the circular mask in the
Additive Mask mode, you can now apply paint
strokes or special effects to both the rectangular and circular
areas without affecting the rest of the image.
Click here to open a sample image.
Because you used the Subtractive Mask mode, the area that you
selected is no longer editable (i.e., it is subtracted from the
original selection).
If you apply paint strokes or special effects to the selected
areas on your image, the irregular shape inside the rectangular
or circular selection is not affected.
Click here to open a sample image.
If you paint over areas that are already selected, those areas
are removed from the selection (i.e., a mask covers all overlapping
areas). If there are no overlapping areas, all the areas you define
are incuded in a single selection.
Click here to learn more about masks.
Select a topic:
Select colors in a particular area on an image
Select colors anywhere on an image
Select adjacent colors on an image
Click here to open a sample image.
The color of the pixel that you specified as an anchor point
Click here to open a sample image.
Click here to open a sample image.
Click here to learn more about masks.
Select a topic:
Applying perspective to a mask marquee
Click here to open a sample image.
Click here to open a sample image.
Click here to open a sample image.
Click here to open a sample image.
Click here to open a sample image.
Click here to open a sample image.
Click here to open a sample image.
Click here to learn more about masks.
Use the Grow and Similar commands to expand or reduce the selection
based on color tolerance.
Select a topic:
Expand the selected area on your image
Add adjacent pixels of the same color
Add pixels of the same color anywhere on your image
Reduce the selected area on your image
Click here to open a sample image.
The width of the mask marquee increases by the value that you
type in the Expand dialog box.
Click here to open a sample image.
The Grow button is only available if you have selected an area
on the image.
Click here to open a sample image.
The Grow button is only available if you have selected an area
on the image.
Click here to open a sample image.
The width of the mask marquee decreases by the value that you
type in the Reduce dialog box.
Click here to learn more about masks.
Before you can complete the following tasks, you must select an
area on your image.
Select a topic:
Save the mask in a mask channel
Once saved in a channel, a mask can be loaded and reused within
the same image repeatedly. This lets you switch from one mask
to another without having to recreate the mask each time.
masks. Begin by exploring some of the basic concepts associated
with creating and using masks. Then, learn how to select shapes
and colors in your image, how to transform and edit selections,
and how to save your masks in channels or on disk.
Note
The Mask Scissors tool
can also be used to select freehand areas on your image.
Tip
Because images vary in
color from very light to very dark, you can change the color of
mask marquees to make them more visible on your image. Customizing
the color of this on-screen indicator makes it easy to identify
precise areas and outlines on your image.
Click Mask menu, Mode,
and then click Normal, Additive, Subtractive, or XOR.
Click the Normal, Additive,
Subtractive, or XOR buttons on the Property Bar.
Click the Normal, Additive,
Subtractive, or XOR buttons in the Color Mask dialog box.
Click a mask tool and
press CTRL to invoke the Additive mode, SHIFT to invoke the Subtractive
mode and CTRL + SHIFT to invoke the XOR mode.
Tip
If you save an image
in a file format that does not support mask information, all mask
channels are lost when you close the image.
and all other pixels in the defined area that fall within the
specified color tolerance range
are masked or protected.
Tip
You can also use the
Lasso Mask tool as a freehand tool to select areas on your image.
Tip
You can remove selected
colors from the preview by disabling the X check box in the list
of sampled colors.
Tip
To expand the area produced
the first time you used the Magic Wand Mask tool, click Mask menu,
Mode, Additive and click another color on the image.
Note
Skewing arrows are two-headed
center arrows on each side of the marquee's highlighting box.
They move in either direction.
even
if the image pixels are not adjacent to one another.