Full parallax transparent 3D display by holographic ray direction control technology

2021 ◽  
Vol 2021 (0) ◽  
pp. 1A1-J09
Author(s):  
Motoyasu SANO ◽  
Kenta TANAKA ◽  
Hideyoshi HORIMAI ◽  
Yumi HORIMAI ◽  
Yusuke AOKI
Keyword(s):  
Control Technology ◽  
3D Display ◽  
Direction Control

scholarly journals Geometric Correction Method Applying the Holographic Ray Direction Control Technology

2021 ◽  
Vol 33 (5) ◽  
pp. 1155-1168
Author(s):  
Kenta Tanaka ◽  
Motoyasu Sano ◽  
Yumi Horimai ◽  
Hideyoshi Horimai ◽  
Yusuke Aoki ◽  
...  
Keyword(s):  
Low Cost ◽  
Correction Method ◽  
Control Technology ◽  
Geometric Correction ◽  
Micro Electro Mechanical Systems ◽  
Exposure System ◽  
Projection Mapping ◽  
Projected Image ◽  
Direction Control ◽  
Geometry Correction

In recent years, there has been an increasing need for larger screens and higher definition displays, while projectors are becoming smaller and cheaper. Furthermore, an ultra-short-throw projector that can display on a large screen while significantly reducing the distance between the projector and screen is being developed. However, ultra-short-throw projectors are required to be precisely aligned with the screen, and if the screen is not flat, the projected image becomes distorted. Therefore, geometric correction projection technology is attracting attention for projection on curtains and the walls of living rooms instead of screens for realizing the correction of distortion during projection with ultra-short-throw projectors, projection mapping, signage, etc. We focused on developing a hologram with perfect command of the ray. Conventional geometry-correction systems are expensive systems that require a personal computer and a camera. In this study, we developed a geometric correction method applying holographic ray direction control technology to control a holographic ray at a low cost and in real time. In this paper, we studied the exposure technology and proposed a ray-direction control technology that combines a scanning laser projector that uses a hologram and a micro electro mechanical systems mirror. We also proposed and demonstrated the basic principle of a holographic surface projector (HSP), which uses hologram geometry correction technology. Finally, we constructed a geometrically corrected hologram exposure system using a depth camera and conducted geometrically corrected projection experiments.

Simplified Dynamic Model for Amount of Directional Correction of Small-Diameter Tunneling Robot

1992 ◽  
Vol 114 (3) ◽  
pp. 476-480 ◽  
Author(s):  
Shin-ichi Aoshima ◽  
Tetsuro Yabuta
Keyword(s):  
Automatic Control ◽  
Dynamic Model ◽  
Robot Control ◽  
Small Diameter ◽  
Control Technology ◽  
Control Laws ◽  
Telecommunication Cable ◽  
Fluid Jets ◽  
Direction Control ◽  
Dynamic Simulator

In the last decade, small-diameter tunneling technology has improved considerably. As a result, the use of this technology is expected to increase dramatically [1]. For example, one microtunneling system can produce microtunnels ranging in diameter from 45 to 150 mm by using mechanically assisted high-pressure, low-volume fluid jets [2]. However, no dynamic model or automatic direction control has yet been designed for this technology. This paper describes a simplified dynamic model for the amount of vertical directional correction for a small-diameter tunneling robot designed to install telecommunication cable conduit. This model can also be used for the horizontal direction. The direction control of a tunneling robot conventionally depends on both the experience and intuition of the operator, and there have been no studies with regard to its automation. Therefore, in order to establish an automatic control technology for a small-diameter tunneling robot, we construct a simplified dynamic model for the amount of directional correction of the robot taking its past trajectory into consideration. We can make a dynamic simulator for the tunneling robot using this dynamic model. With this simulator, we can establish control laws for robot control. So, this study can contribute to the development of automatic control technology for a tunneling robot.

scholarly journals New cross Direction Control Technology in QCS

2005 ◽  
Vol 59 (9) ◽  
pp. 1337-1345
Author(s):  
Takashi Sasaki
Keyword(s):  
Control Technology ◽  
Cross Direction ◽  
Direction Control

Landslide control technology transfer and Challenges in Ethiopia

2015 ◽  
Vol 52 (4) ◽  
pp. 180-184 ◽  
Author(s):  
Mitsuya ENOKIDA ◽  
Satoru TSUKAMOTO ◽  
Kensuke ICHIKAWA ◽  
Yuichi ICHIKAWA
Keyword(s):  
Technology Transfer ◽  
Control Technology

A Plant Control Technology Using Reinforcement Learning Method with Automatic Reward Adjustment

2009 ◽  
Vol 129 (7) ◽  
pp. 1253-1263
Author(s):  
Toru Eguchi ◽  
Takaaki Sekiai ◽  
Akihiro Yamada ◽  
Satoru Shimizu ◽  
Masayuki Fukai
Keyword(s):  
Reinforcement Learning ◽  
Control Technology ◽  
Learning Method ◽  
Plant Control

Floating Autostereoscopic 3D Display with Variable Viewing Area for Multi-View Teleconference System

2014 ◽  
Vol 134 (10) ◽  
pp. 1423-1428
Author(s):  
Takahiro Ishinabe ◽  
Tohru Kawakami ◽  
Tatsuo Uchida ◽  
Hideo Fujikake
Keyword(s):  
3D Display
Sign in / Sign up

Export Citation Format

Share Document