Adobe photoshop elements 用户手册

CHAPTER 9

Uses an image, called a displacement 

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). 

Choose Filter > Distort > Displace, or use the 

Filters palette to apply the Displace filter.

Enter the scale for the magnitude of the 

displacement.

When the horizontal and vertical scales are set 
to 100%, the greatest displacement is 128 pixels 
(because middle gray produces no displacement).

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.

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.

Select and open the displacement map. The 

distortion is applied to the image.

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 

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 

the image’s surface, making the image look as if it 
were under water.

Squeezes a selection. A positive value up to 

100% shifts a selection toward its center; a negative 
value up to –100% shifts a selection outward.

Converts a selection from its 

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 

selection, like ripples on the surface of a pond. 
For greater control, use the Wave filter. Options 
include the amount and size of ripples.