This effect was generated in Filter Forge, a Photoshop plugin that allows you to create your own filters.
Turns the inside of an image outside and vice-versal and combines this with some optional tiling effects. This creates beautiful circular patterns, vortex and tunnel effects.
Using RĂ´'s Spherify, Un-Spherify
and Uberzev's PolarCoordinate
inversion pattern circular vortex tunnel
This filter has earned its author one of our rewards. They are given to the authors of popular filters and include a free copy of Filter Forge.