KEYWORDS: 3D displays, Monochromatic aberrations, 3D image processing, Optimization (mathematics), Point spread functions, LCDs, Displays, Digital imaging, Fourier transforms, 3D vision
A large viewing angle 3D light-field display based on a single lens array with the optical-digital joint optimization algorithm is proposed. Aberrations generated by the single lens array are suppressed with the presented algorithm to increase the viewing angle. The proposed algorithm consists of aberration optional-correction module and digital image optimization module. Some aberrations selected by aberration analyses are suppressed to zero or minimums with the single lens unit optical structure in aberration optional-correction module, and residual aberrations are suppressed by pre-correcting based on Wiener filtering in digital image optimization module. Experimental results confirm that the optical-digital joint optimization algorithm can suppress aberrations effectively, and a 52-degree viewing angle 3D light-field display is realized.
Floating three-dimensional (3-D) display can provide a natural and realistic 3-D scene. Nowadays, because of stray light and aberration, most floating 3-D displays cannot realize a large viewing angle and high resolution simultaneously, and it directly deteriorates the viewing effect of the 3-D scene. A large viewing angle floating and high-resolution 3-D display based on multichannel and multivariable (MCMV) correction algorithm are presented. The optical system consists of a time-sequential autostereoscopic 3-D display with the directional backlight, a floating lens, and an eye tracker. The 3-D display with the directional backlight provides loss-free resolution for the system. To realize a large viewing angle floating 3-D display, MCMV correction algorithm based on eye tracking is proposed. The 3-D images can be reconstructed by the optical system within the viewing angle of 60 deg. The feasibility of the proposed display method is verified with the experimental results.
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