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A tracking based autostereoscopic 3D Display (D4D) has been developed at Dresden University of Technology. It employs a Flat Panel Display (FPD) and is designed for single users. Both stereoscopic half images are displayed simultaneously in alternating FPD columns. The separation of both half images to the viewer's eyes is accomplished using a prism mask in front of the FPD. The tracking is performed in two ways. Firstly, the separation mask is shifted mechanically against the stereoscopic image according to the viewer's position. Secondly, the stereoscopic image is shifted electronically. The D4D is extremely flat. Regular flat panel displays or even notebooks can be made autostereoscopic using the D4D technology Add-Ons. The development of the D4D has been funded by the Saxonian State Ministry of Economy and Labor.
Schwerdtner et al. (Thu,) studied this question.