Adobe PHOTOSHOP ELEMENTS Manual page 206

CHAPTER 9
198
Applying Filters and Effects
Displace
map, to determine how to distort a selection. For
example, using a parabola-shaped displacement
map, you can create an image that appears to be
printed on a cloth held at its corners.
This filter creates displacement maps, using a file
with flattened layers saved in Photoshop format
(except Bitmap mode images). You can also use the
files included with your software (search for the
Displacement maps folder).
To use Displace:
1 Choose Filter > Distort > Displace, or use the
Filters palette to apply the Displace filter.
Enter the scale for the magnitude of the
2
displacement.
When the horizontal and vertical scales are set
to 100%, the greatest displacement is 128 pixels
(because middle gray produces no displacement).
3 If the displacement map is not the same size
as the selection, choose how the map will fit the
image—Stretch to Fit to resize the map, or Tile to
fill the selection by repeating the map in a pattern.
4 Choose Wrap Around or Repeat Edge Pixels to
determine how undistorted areas of the image will
be treated. (See "Defining undistorted areas" on
page 191.)
Click OK.
5
6 Select and open the displacement map. The
distortion is applied to the image.
Uses an image, called a displacement
The Displace filter shifts a selection using a color
value from the displacement map—0 is the
maximum negative shift, 255 is the maximum
positive shift, and a gray value of 128 produces no
displacement.
Makes an image appear as if it is being
Glass
viewed through different types of glass. You can
choose a glass effect or create your own glass
surface as a Photoshop file and apply it. You can
adjust scaling, distortion, and smoothness
settings. When using surface controls with a file,
follow the instructions for the Displace filter.
For more information about Glass filter controls,
see "Using texture and glass surface controls" on
page 191.
Adds randomly spaced ripples to
Ocean Ripple
the image's surface, making the image look as if it
were under water.
Squeezes a selection. A positive value up to
Pinch
100% shifts a selection toward its center; a negative
value up to –100% shifts a selection outward.
Converts a selection from its
Polar Coordinates
rectangular to polar coordinates, and vice versa,
according to a selected option. You can use this
filter to create a cylinder anamorphosis—art
popular in the 18th century—in which the
distorted image appears normal when viewed in
a mirrored cylinder.
Creates an undulating pattern on a
Ripple
selection, like ripples on the surface of a pond.
For greater control, use the Wave filter. Options
include the amount and size of ripples.