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269 results on '"Suyama, Shiro"'

64. Development of Aerial Interface by Integrating Omnidirectional Aerial Display, Motion Tracking, and Virtual Reality Space Construction.

Author

Yasugi, Masaki, Adachi, Mayu, Inoue, Kosuke, Ninomiya, Nao, Suyama, Shiro, and Yamamoto, Hirotsugu

Subjects
USER experience, DISPLAY systems
Abstract

By combining an aerial display, user tracking system, and virtual reality (VR) space, we realized an aerial interface for providing both an immersive user experience and real-time communication with people outside the device. We developed a simple application for detecting user contact and changing the color of an object to measure the latency of our aerial interface system. [ABSTRACT FROM AUTHOR]

Published
2022
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65. Importance of Visual Information at Change in Motion Direction on Depth Perception From Monocular Motion Parallax

Author

Mizushina, Haruki, Kanayama, Ippei, Masuda, Yuki, Suyama, Shiro, Mizushina, Haruki, Kanayama, Ippei, Masuda, Yuki, and Suyama, Shiro

Abstract

This paper demonstrates the importance of visual information on depth perception from monocular motion parallax presented at the time of change in the motion direction of head and stimulus movements. In head-tracking systems, a longer delay time between the head and stimulus movements degrades the depth perception from monocular motion parallax. Because this delay is noticeable at this time, we hypothesized that the visual information given at the time of the direction change plays a critical role in the depth perception from motion parallax. We evaluated depth perception from monocular motion parallax with and without a visual stimulus at the time of the motion direction change to confirm our hypothesis, and clarified that stable and unambiguous depth can be perceived by presenting the change of the stimulus motion direction. We also demonstrated that it is the change in motion direction itself that is important rather than the temporal stop between deceleration and acceleration of the stimulus motion.

Published
2020

67. Luminance addition of a stack of multidomain liquid-crystal displays and capability for depth-fused three-dimensional display application

Author

Date, Munekazu, Hisaki, Tomoko, Takada, Hideaki, Suyama, Shiro, and Nakazawa, Kenji

Subjects
Optics -- Research, Liquid crystal displays -- Research, LCD display, Astronomy, Physics
Abstract

A stack of liquid-crystal displays is expected to reduce visual fatigue caused by a flat-panel three-dimensional (3DI display. We previously developed a compact depth-fused 3D (DFD) display by using a stack of two twisted-nematic (liquid-crystal) LC panels, but its viewing-angle characteristics and color reproducibility were not so good. Therefore recent wide-view LC panels should be used. We report calculated and measured luminance addition characteristics, which are essential for evaluating 3D display characteristics, of a stack of two multidomain LC panels. We found that LC panels with super in-plane switching, patterned vertical alignment, multiple vertical alignment, and continuous pinwheel alignment modes are suitable for DFD display application. OCIS codes: 230.3720, 120.2040.

Published
2005

68. Reduction of power consumption in compact DFD display by using FS color technology

Author

Date, Munekazu, Hisaki, Tomoko, Takada, Hideaki, Suyama, Shiro, and Nakazawa, kenji

Subjects
Liquid crystal displays -- Electric properties, Sequential processing, LCD display, Business, Electronics, Electronics and electrical industries
Abstract

The transmittance of a depth-fused 3-dimensional display can be improved by applying the field-sequential color method. The results indicate that the luminance of the backlight can be reduced to less than that of a 2-D liquid crystal display.

Published
2005

77. Protruding apparent 3D images in Depth-Fused 3D display

Author

Takada, Hideaki, Suyama, Shiro, Date, Munekazu, and Ohtani, Yoshimitsu

Subjects
Depth perception -- Technology application, Consumer electronics -- Research, Three-dimensional display systems -- Design and construction, Brightness (Photometry) -- Evaluation, Technology application, 3D technology, Business, Electronics and electrical industries, Engineering and manufacturing industries
Abstract

A protruding apparent 3D image can be perceived outside the region of two overlapped object images displayed at different depths in Depth-Fused 3D (DFD) visual perception when those images have opposite signs of luminance difference between the object image and the surroundings, that is, when the object-image luminance in the front image is darker than that of the surrounding area and the object-image luminance in the rear image is brighter than the surrounding area or vice versa. Subjective test results show that (1) a protruding apparent 3D image is perceived and (2) the perceived protrusion depth continuously varies according to the change in luminance difference between the object image and surroundings. This protruding method enables a deeper 3D imaging area in the 3D display using a DFD visual perception. Index Terms--Three-dimensional (3D) display, depth-fused 3D (DFD), protruding, luminance ratio.

Published
2008

78. Front and rear image generation module for depth-fused 3-D display

Author

Takada, Hideaki, Suyama, Shiro, Date, Munekazu, and Kimura, Kazuo

Subjects
Image processing -- Research, Business, Electronics and electrical industries, Engineering and manufacturing industries
Abstract

We have developed an image generation module for the depth-fused 3-D (DFD) display, which can show 3-D images using the DFD visual illusion. The module generates the front and rear images from the 2-D original image and depth-map image. The module uses a field programmable gate array (FPGA). This module shows 3-D images at the full video rate and easily provides a video interface for DFD display users. Index Terms--Three-dimensional (3-D) display, depth-fused 3-D (DFD), visual illusion, luminance ratio.

Published
2006

80. P‐57: Student Poster:Improved Modulation Transfer Function (MTF) for Aerial Image Formed with AIRR by Use of Two Transparent Spheres

Author

Takiyama, Kazuaki, Guo, Haotong, Fujii, Kengo, Yasugi, Masaki, Suyama, Shiro, and Yamamoto, Hirotsugu

Abstract

In the AIRR optical system that combines transparent spheres, the MTF due to quasi‐parallelization is greatly improve according to the placement distance of the transparent spheres. Due to the effect of aberration, the MTF reaches its maximum when the sphere is placed outside its Paraxial approximate focal length.

Published
2022
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81. Characteristics of field-induced-drain (FID) poly-Si TFT's with high on/off current ratio

Author

Tanaka, Keiji, Nakazawa, Kenji, Suyama, Shiro, and Kato, Kinya

Subjects
Thin-film circuits -- Research, Thin film devices -- Research, Transistors -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Polycrystalline silicon thin-film transistors of the Field-Induction-Drain (FID) type are studied. The transistors have an inversion layer generated by the electric field acting as the drain, facilitating a lower leakage current while sustaining a high ON current. Experiments achieved an OFF current of 1.5 pA/micrometer and an ON/OFF current ratio of 10 to the seventh power. These are attributed to the superior junction properties of the FID structure.

Published
1992

94. 選奨受賞者からのメッセージ

Author

Hamada, Yasuto, primary, Tanaka, Shoji, additional, Itami, Makoto, additional, Ohzeki, Kazuo, additional, Ohtake, Hiroshi, additional, Sakazawa, Shigeyuki, additional, Shishikui, Yoshiaki, additional, Suyama, Shiro, additional, Takahashi, Tokiichiro, additional, Takahashi, Hideya, additional, and Haseyama, Miki, additional

Published
2019
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96. Aerial 3D/2D composite display

Author

Terashima, Yoshiki, primary, Fujii, Kengo, additional, Yamamoto, Hirotsugu, additional, Yasugi, Masaki, additional, Suyama, Shiro, additional, and Takeda, Yukihiro, additional

Published
2018
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