Goop

Distorts an image. You can use this for security purposes, such as for creating non-deterministic watermarks. The results look like a “goopy” version of the image.

For example, if you have the following image:
You can use the Goop transformation with chaos set to the maximum value of 1:

If you add the IMQuery transformation to a policy, use the im variable, and select Goop, you can use a query string to distort any image using this policy. See Syntax and Examples for the syntax for the query string parameter.