Imagick

This module allows you to add a lot of custom effects to an image such as blur, mirror, ...

Install as usual but the module will only works when the 'imagick php' extension is
installed/enabled on your server. You can do this by yourself if you have access to your
hostadministration.

Go to Administration » Configuration » Media » Image toolkit and change
 the image toolkit to Imagick..

toolkit.png

Now you can use all the customs effects