Apple Pages '08 - Manual (Page 161)

Chapter 7 Working with Shapes, Graphics, and Other Objects 161
Unmasking an Image
You can remove a mask and restore the original image.
To unmask an image:
m Select the masked image, and click the Mask button in the Format Bar or choose
Format > Unmask or click the Mask button on the Format Bar.
Removing the Background or Unwanted Elements from an Image
The Instant Alpha tool enables you to convert certain colors in an image to transparent.
This feature is useful for removing an unwanted background or other colors.
You’ll get the best results removing solid colors with clear boundaries around them. To
remove areas that are less distinct, select a smaller area and repeat the process.
To remove unwanted elements:
1 Select the image.
2 Choose Format > Instant Alpha.
3 Click the color you want to make transparent, and then drag slowly over it.
As you drag, the selection grows to include the contiguous area that uses similar colors.
You can control how much of the image is selected by dragging less or more.
4 Repeat step 3 as many times as you like.
Dragging selects the
contiguous area that
uses the same color.
Dragging more here...
...selects more of
the image.