It's reminiscent of a binary zone plate [1] in a slightly altered Cartesian form. Zone plate images are fairly commonly used for testing image filtering. [1]

It's reminiscent of a binary zone plate [1] in a slightly altered Cartesian form. Zone plate images are fairly commonly used for testing image filtering. [1] http://en.wikipedia.org/wiki/Zone_plate http://en.wikipedia.org/wiki/Zone_plate