An image presented on an autostereoscopic system should not contain discontinuities between adjacent views. A viewer should experience a continuous scene when moving from one view to the next. If corresponding points in two perspectives do not spatially abut, a viewer will experience jumps in the scene. This is known as interperspective aliasing. Interperspective aliasing is caused by object features far away from the stereoscopic screen being too small, which results in visual artifacts. By modeling a 3D point as a defocused image point, we can adapt Fourier analysis to devise a depth-dependent filter kernel that allows filtering of a stereoscopic 3D image. For synthetic 3D data, we use a simpler approach, which is to smear the data by a distance proportional to its depth.
Time multiplexed autostereoscopic displays are often associated with complex optics design and have not yet been made in a flat panel format. The reason is mainly because the high bandwidth image sources are not available as flat panel displays. The optical Wedge® developed at Cambridge University compresses the optics into a single flat waveguide, which allows for a flat panel time multiplexed autostereoscopic display. By using an active shutter synchronized with a custom built high frame rate DLP light engine we suggest two approaches for creating a flat panel 3D display. The limitations on size are purely limited by the shutter size. However, we also suggest a solution where a small shutter can be used to create a large sized display.
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