Resolution improvement of integral imaging based on time multiplexing sub-pixel coding method on common display panel

Abstract

Considering the limited pixel number and large pixel size of common display panel, the captured elemental images (EIs) array of high density pixels cannot be reconstructed sufficiently in the display process of integral imaging, because of matched display requirement. To solve this problem, this paper presents a novel approach to improve integral imaging resolution by designing a coded sub-pixel mask on common display panel. Specifically, multi-pixels in the captured EIs are displayed in a pixel in the common display panel with time multiplexing along with the corresponding aperture switched on/off of the coded sub-pixel mask periodically, in which the resolution of the reconstructed image is determined by the coded aperture size of the sub-pixel mask rather than the pixel size of the display panel. Then, the mapping relationship between the displayed pixel and the position of the switched on aperture of the coded sub-pixel mask is established theoretically. Computational reconstruction and optical experimental results show that this method can match the pixel number of the captured EIs with that of the display panel and the resolution of integral imaging can be improved significantly.

Multi-Image Encryption Method via Computational Integral Imaging Algorithm

“…Computational Integral Imaging (CII), as a well-performing optical imaging system, can achieve a full-color, wide-angle 3D light field display [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Integral imaging technology can record image information from multiple perspectives of a scene, which can provide more robustness in the recovery process of image encryption.…”

A high optical efficiency 3D/2D convertible integral imaging display

“…Integral imaging (II) proposed by Lippmann in 1908 is a good candidate for 3D display because it can provide full parallax and continuous viewing points within the viewing angle . Through the hard work by former researchers, many early problems, such as the pseudoscopic images, limited depth of focus, narrow viewing angle, and low 3D resolution, have been resolved or improved effectively …”

“…1,2 Through the hard work by former researchers, many early problems, such as the pseudoscopic images, limited depth of focus, narrow viewing angle, and low 3D resolution, have been resolved or improved effectively. [3][4][5][6][7][8][9][10][11] To be widespread in the market, one of the key issues for the 3D display technique is whether it supports the 3D/twodimensional (2D) convertible display. A number of methods and structures are proposed to make it possible for II to be 3D/2D convertible.…”

P‐71: A 3D/2D Convertible Integral Imaging Display with High Optical Efficiency

“…Integral imaging (II) proposed by Lippmann in 1908, which used to be called integral photography, is a good candidate for 3D display because it can provide full parallax and continuous viewing points within the viewing angle [1][2] . Through the hard work by former researchers, many early problems, such as the pseudoscopic images, limited depth of focus, narrowed viewing angle and low 3D resolution, have been resolved or improved effectively [3][4][5][6][7][8][9][10][11] .…”