360-degree large-scale multiprojection light-field 3D display system

This paper proposes a 360-deg large-scale multiprojection light-field 3D display system, which can reconstruct the light field of models in real space. The reconstructed contents can be observed by multiple viewers from different angles and positions simultaneously. In this system, 360 projectors project images onto a cylindrical light-field diffusion screen whose height is 1.8 m and diameter is 3 m. When moving around the system, viewers can see 3D scenes with smooth-motion parallax, and the frame rate can reach 30 fps and above. To achieve a large-scale display, we design a wide-field lens with cylindrical lenses to enlarge the projection image. To promote efficiency of data transmission and render 3D contents in real time, we apply computers equipped with multiple graphic cards, and display data are divided by field programmable gate array. Finally, a 360-deg light-field autocalibration method based on CCD and multiview sampling is proposed, whose calibration effect is strongly confirmed by experiment results. (C) 2018 Optical Society of America