scholarly journals Aktina Vision: Full-parallax three-dimensional display with 100 million light rays

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Hayato Watanabe ◽  
Naoto Okaichi ◽  
Takuya Omura ◽  
Masanori Kano ◽  
Hisayuki Sasaki ◽  
...  
Keyword(s):  
Light Field ◽  
Three Dimensional ◽  
Prototype System ◽  
3D Display ◽  
3D Images ◽  
Image Reproduction ◽  
Light Rays ◽  
Real Objects ◽  
Three Dimensional Display ◽  
First Time

AbstractNatural three-dimensional (3D) images, perceived as real objects in front of the viewer, can be displayed by faithfully reproducing light ray information. However, 3D images with sufficient characteristics for practical use cannot be displayed using conventional technologies because highly accurate reproduction of numerous light rays is required. We propose a novel full-parallax light field 3D display method named ‘Aktina Vision’, which includes a special top-hat diffusing screen with a narrow diffusion angle and an optical system for reproducing high-density light rays. Our prototype system reproduces over 100,000,000 light rays at angle intervals of less than 1° and optimally diffuses light rays with the top-hat diffusing screen. Thus, for the first time, light field 3D image reproduction with a maximum spatial resolution of approximately 330,000 pixels, which is near standard-definition television resolution and three times that of conventional light field display using a lens array, is achieved.

Full-parallax 3D display using time-multiplexing projection technology

2020 ◽  
Vol 2020 (2) ◽  
pp. 100-1-100-6
Author(s):  
Takuya Omura ◽  
Hayato Watanabe ◽  
Naoto Okaichi ◽  
Hisayuki Sasaki ◽  
Masahiro Kawakita
Keyword(s):  
Incident Light ◽  
Polarization State ◽  
3D Image ◽  
3D Display ◽  
Time Division Multiplexing ◽  
3D Images ◽  
Polarization Gratings ◽  
Light Rays ◽  
Time Division

We enhanced the resolution characteristics of a threedimensional (3D) image using time-division multiplexing methods in a full-parallax multi-view 3D display. A time-division light-ray shifting (TDLS) method is proposed that uses two polarization gratings (PGs). As PG changes the diffraction direction of light rays according to the polarization state of the incident light, this method can shift light rays approximately 7 mm in a diagonal direction by switching the polarization state of incident light and adjusting the distance between the PGs. We verified the effect on the characteristics of 3D images based on the extent of the shift. As a result, the resolution of a 3D image with depth is improved by shifting half a pitch of a multi-view image using the TDLS method, and the resolution of the image displayed near the screen is improved by shifting half a pixel of each viewpoint image with a wobbling method. These methods can easily enhance 3D characteristics with a small number of projectors.

scholarly journals Full-chain modeling and performance analysis of integral imaging three-dimensional display system

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Ying Yuan ◽  
Xiaorui Wang ◽  
Yang Yang ◽  
Hang Yuan ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Optimization Design ◽  
Quality Evaluation ◽  
Light Field ◽  
Three Dimensional ◽  
Display System ◽  
3D Display ◽  
Performance Characterization ◽  
Integral Imaging ◽  
Characterization Model ◽  
Display Quality

Abstract The full-chain system performance characterization is very important for the optimization design of an integral imaging three-dimensional (3D) display system. In this paper, the acquisition and display processes of 3D scene will be treated as a complete light field information transmission process. The full-chain performance characterization model of an integral imaging 3D display system is established, which uses the 3D voxel, the image depth, and the field of view of the reconstructed images as the 3D display quality evaluation indicators. Unlike most of the previous research results using the ideal integral imaging model, the proposed full-chain performance characterization model considering the diffraction effect and optical aberration of the microlens array, the sampling effect of the detector, 3D image data scaling, and the human visual system, can accurately describe the actual 3D light field transmission and convergence characteristics. The relationships between key parameters of an integral imaging 3D display system and the 3D display quality evaluation indicators are analyzed and discussed by the simulation experiment. The results will be helpful for the optimization design of a high-quality integral imaging 3D display system.

Depth-tunable three-dimensional display with interactive light field control

2016 ◽  
Vol 371 ◽  
pp. 166-172 ◽  
Author(s):  
Songlin Xie ◽  
Peng Wang ◽  
Xinzhu Sang ◽  
Chenyu Li ◽  
Wenhua Dou ◽  
...  
Keyword(s):  
Light Field ◽  
Three Dimensional ◽  
Field Control ◽  
Three Dimensional Display

Virtual viewpoint generation for three-dimensional display based on the compressive light field

2016 ◽  
Author(s):  
Qiao Meng ◽  
Xinzhu Sang ◽  
Duo Chen ◽  
Nan Guo ◽  
Binbin Yan ◽  
...  
Keyword(s):  
Light Field ◽  
Three Dimensional ◽  
Three Dimensional Display

scholarly journals Augmented reality three-dimensional display with light field fusion

2016 ◽  
Vol 24 (11) ◽  
pp. 11483 ◽  
Author(s):  
Songlin Xie ◽  
Peng Wang ◽  
Xinzhu Sang ◽  
Chengyu Li
Keyword(s):  
Augmented Reality ◽  
Light Field ◽  
Three Dimensional ◽  
Three Dimensional Display

scholarly journals Automatic geometrical calibration for multiprojector-type light field three-dimensional display

2014 ◽  
Vol 53 (7) ◽  
pp. 073107 ◽  
Author(s):  
Bei-shi Chen ◽  
Qing Zhong ◽  
Hai-feng Li ◽  
Xu Liu ◽  
Hai-song Xu
Keyword(s):  
Light Field ◽  
Three Dimensional ◽  
Three Dimensional Display

A large depth of field frontal multi-projection three-dimensional display with uniform light field distribution

2015 ◽  
Vol 354 ◽  
pp. 321-329 ◽  
Author(s):  
Peng Wang ◽  
Songlin Xie ◽  
Xinzhu Sang ◽  
Duo Chen ◽  
Chenyu Li ◽  
...  
Keyword(s):  
Field Distribution ◽  
Light Field ◽  
Three Dimensional ◽  
Depth Of Field ◽  
Large Depth ◽  
Three Dimensional Display

scholarly journals A Reflective Augmented Reality Integral Imaging 3D Display by Using a Mirror-Based Pinhole Array

2019 ◽  
Vol 9 (15) ◽  
pp. 3124
Author(s):  
Qiang Li ◽  
Huan Deng ◽  
Senlin Pang ◽  
Wenhao Jiang ◽  
Qionghua Wang
Keyword(s):  
Augmented Reality ◽  
Three Dimensional ◽  
3D Display ◽  
Projection System ◽  
Imaging Device ◽  
Integral Imaging ◽  
The Real ◽  
Large Size ◽  
Low Weight ◽  
Real Objects

In this paper, we propose a reflective augmented reality (AR) display system based on integral imaging (II) using a mirror-based pinhole array (MBPA). The MBPA, obtained by punching pinholes on a mirror, functions as a three-dimensional (3D) imaging device, as well as an image combiner. The pinhole array of MBPA can realize a pinhole array-based II display, while the mirror of MBPA can image the real objects, so as to combine the images of the real objects with the reconstructed 3D images. The structure of the proposed reflective AR display is very simple, and only a projection system or a two-dimensional display screen is needed to combine with the MBPA. In our experiment, a 25cm × 14cm sized AR display was built up, a combination of a 3D virtual image and a real 3D object was presented by the proposed AR 3D display. The proposed device could realize an AR display of large size due to its compact form factor and low weight.

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