Date: 02 May 2012
Time: 13.00-14.00
Place: NJ14 3-228
We show that the autostereoscopic display of stereoscopic images using a static parallax barrier can be improved by adapting the rendering to the angle under which the user is looking at a mobile display; thus, ghosting artifacts and depth reversals can often be avoided even if the user tilts the mobile device. Instead of moving the barrier itself to compensate for a misplacement of the device in relation to the user, a pixel column shifting in software can provide a similar compensation. This requires a parallax barrier where each section covers two pixel columns at a time. The proposed method has been implemented using OpenGL shaders and a parallax barrier that was designed for a display of exactly half the resolution of the employed display. Technical tests showed a good left and right image separation with a viewing angle of up to 60 degrees. Preliminary user tests indicate that an improvement in stereo experience can be observed.