This paper presents a complete framework for capturing, processing and displaying the free viewpoint video on a large scale immersive light-field display. We present a combined hardware-software solution to visualize free viewpoint 3D video on a cinema-sized screen. The new glasses-free 3D projection technology can support larger audience than the existing autostereoscopic displays. We introduce and describe our new display system including optical and mechanical design considerations, the capturing system and render cluster for producing the 3D content, and the various software modules driving the system. The indigenous display is first of its kind, equipped with front-projection light-field HoloVizio technology, controlling up to 63 MP. It has all the advantages of previous light-field displays and in addition, allows a more flexible arrangement with a larger screen size, matching cinema or meeting room geometries, yet simpler to set-up. The software system makes it possible to show 3D applications in real-time, besides the natural content captured from dense camera arrangements as well as from sparse cameras covering a wider baseline. Our software system on the GPU accelerated render cluster, can also visualize pre-recorded Multi-view Video plus Depth (MVD4) videos on this light-field glasses-free cinema system, interpolating and extrapolating missing views.
Performances of high quality imaging systems are often affected by surface or glass defects, like scratches, bubbles or other localized disturbances. The goal of the present investigation is the modeling of air inclusions in the lens material and analyzing the resulting changes in the wavefront distortion and in the diffraction spot quality. CD and DVD focusing objectives are especially sensitive to this type of defect, since the size of the diffraction spot and the power-density distribution determines the quality of both the written pits and received signal. We used OSLO and ZEMAX optical design software to model these errors. This model includes the DVD objective lens and the disc. The objective lens is a plano-convex lens made of glass with an aspheric layer on its convex side. Bubbles are incorporated as ball-shaped air inclusions. The computations are based on ray tracing and physical optics propagation methods. From these computations we can calculate the intensity distribution in the focal spot and the encircled energy in the Airy disk. These calculations help us determine the tolerances of DVD objective lenses to air inclusions in function of the bubble size, shape and position. The practical application of the model will allow us to redefine the quality criteria for the used DVD lenses.