Apple Shake 4 - Manual (Page 809)

Chapter 27 Warping and Morphing Images 809
The following image is a checkerboard warped with a QuickShape node. Because the
shape is black and white, with little gray, it is difficult to make out the distortion in the
checkerboard.
As the following image demonstrates, it is often a good idea to insert a blur between a
high-contrast distortion image and the IDisplace node.