Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 416

Select the computer graphic layer you want to distort, and apply Optics Compensation to it using the FOV value
3
from step 2.
Select Reverse Lens Distortion.
4
Remove Optics Compensation from the footage layer.
5
Polar Coordinates effect
The Polar Coordinates effect distorts a layer by transposing each pixel in the layer's (x,y) coordinate system to the
corresponding position in the polar coordinate system, or the reverse. This effect produces unusual and surprising
distortions that can vary greatly depending on the image and the controls you select. The standard coordinate system
specifies points by measuring the horizontal distance (x axis) and the vertical distance (y axis) from the origin. Each
point is specified as (x,y). The polar coordinate system specifies points by measuring the length of a radius from the
origin (r) and its angle from the x axis ( ). Each point is specified as (r,
This effect works with 8-bpc, 16-bpc, and 32-bpc color.
Original (top left), and with variations of Polar Coordinates applied (bottom left and right)
Specifies the amount of distortion. At 0%, no distortion occurs.
Interpolation
The conversion process to use:
Type of Conversion
•
Moves pixels by using (x,y) coordinates from each pixel as (r, ) coordinates. For example, an (x,y)
Rect To Polar
coordinate of (2,3) becomes a polar coordinate with a radius of 2 and a degree of 3. Horizontal lines distort into
circles, and vertical lines into radial lines.
• Moves pixels by using the (r,
Polar To Rect
polar coordinates of radius 10 and 45˚ become (x,y) coordinates of (10,45).
Puppet effect
Use the Puppet effect to animate distortions of images to produce natural, lifelike motion.
This effect works with 8-bpc, 16-bpc, and 32-bpc color.
See also
"Animating with Puppet tools" on page 227
) coordinates from each pixel as the (x,y) coordinates. For example,
).
AFTER EFFECTS CS3 410
User Guide