Magic Wand
Magic Wand |
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The Magic Wand tool is designed to select an object based on its color similarity. It starts selecting when you click at a spot in the image, and expands the selection to the contiguous pixels whose color is similar to that of the starting pixels. You can control the threshold of similarity by adjusting the tolerance values. The Add Selection button converts the current selection into an Object Extraction drawing. |
Note: The growing
process requires to handle the whole image in memory, thus it can be applied
on very high-definition images only if the computer has enough memory.
:
Click on this button, move the cross cursor on the image and click on
the desired starting area.
Image: Select an image to apply the magic wand.
Clear: Clear the current selection.
View: Choose the selection rendering.
Size: Set the size of the initial area.
Selection: The New mode applies a new selection each time. The Add mode adds the new selection to the previous.
Increase the threshold of color similarity. For color images, the tolerance is based on IHS values. For gray scale and binary images, the tolerance is based on the intensity values (see Image Types).
Note: It is possible
to adjust the tolerance values before or after the selection.
Class: Assign a class to the current object (see Class Editor).
Fill hole: Remove the holes inside the object.
Convex hull: Transform the outline into a convex shape and remove the holes inside the object.
See
also:
