Static and dynamic parallax barrier displays became very popular over the past years. Especially for single viewer
applications like tablets, phones and other hand-held devices, parallax barriers provide a convenient solution to render
stereoscopic content. In our work we present a computer vision based calibration approach to relate image layer and
barrier layer of parallax barrier displays with unknown display geometry for static or dynamic viewer positions using
homographies. We provide the math and methods to compose the required homographies on the fly and present a way to
compute the barrier without the need of any iteration. Our GPU implementation is stable and general and can be used to
reduce latency and increase refresh rate of existing and upcoming barrier methods.