Once you make a selection, you can use the Grow command or the
Similar command to expand the selection to include similar colors.
Creating objects from selections
You can make new paint objects from image selections with the New
Image from Selection command. This command converts a selection
in an image into a new paint object in the same position on the image
you are editing. This can be useful for layering image composi-
tions.
The result of New Image from Selection is similar to moving a selec-
tion to a transparent layer, a procedure used in some image editing
programs. In Canvas you can use separate transparent paint objects to
create layered image compositions.
Note: This operation doesnt affect the Clipboard contents.
To create a paint object from a selection: With a selection in
an image, choose New Image from Selection in the context menu. To
display the context menu, right-click (Windows) or Ctrl-click (Mac)
in the document.
New images from selections and floating selections
When you choose New Image from Selection, Canvas removes the
selection from the image or deselects the selection in the image. The
selection appears as a new paint object in the same location.
Whether a selection is removed from an image depends on whether
the selection is floating. The opacity of the resulting object also dif-
fers for floating and non-floating selections.
If a selection is not floating, Canvas deselects it but otherwise doesnt
change the original image when you create an object from the selec-
tion. The selected pixels keep their original opacity in the new object.
If a selection is floating, Canvas removes the selection. The effect is
the same as deleting a selection: the background color replaces the
selected pixels, or, if the object has a visibility mask, a clear back-
ground replaces the selected pixels. In the new object, the pixels are
opaque, regardless of their original opacity.
Clear backgrounds in new paint objects
A paint object created from a selection always has a clear, rather than
opaque background, and a visibility mask.