

You now need to make a selection that is squared. Choose the crop tool and set your width and height to the same number. Five and five works fine here .

Now apply filter polar coordinates.

Be sure to check the polar to rectangle button.

Now you should have an interesting image, but it is not finished yet.
Now rotate the image 180 degrees and filter polar coordinates again only this time toggle the rectangular to polar button.
Now you have a way cool image.
You can use this image like this or elaborate on this with some of your own Photoshop techniques. You will be amazed at what your imagination can come up with. Here are a few examples of some images I have made.

