Multiple aerial imaging by use of infinity mirror and oblique retro-reflector

Chiba, Kazunari; Yasugi, Masaki; Yamamoto, Hirotsugu

doi:10.35848/1347-4065/ab9995

Cited by 17 publications

(3 citation statements)

References 26 publications

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“…An AIRR system can form aerial images and has three advantages: the image is recognizable to the naked eye and low cost, and the system has a wide viewing angle. Various AIRR‐based applications have been proposed that take advantage of these characteristics, for example, an aerial video‐calling system with eye‐matching feature, 13 an immersive aerial interface that allows users to interact with contents on the aerial display, 14 multiple aerial imaging using parallel half mirror and mirror, 15 aerial display to multiple road lanes for providing new traffic information provision, 16 aerial depth‐fused 3D (DFD) display to give depth information, 17 aerial display based on an LED panel covered with apertured retro‐reflector forming an aerial image in the direction of the LED panel, 18 subjective super‐resolution aerial display to improve the apparent resolution of the aerial image by switching multiple adjacent subframes at high speed, 19 and a triple‐view display showing different aerial images to observers at different view positions by the combining several AIRR optics 20 . Furthermore, we have demonstrated AIRR optical systems that form a real image in water 21 and omnidirectional aerial display for behavioral biology experiments 22 .…”

Section: Introductionmentioning

confidence: 99%

Aerial display that reconstructs face orientation by use of spatial blending of two face images

Kishinami,

Sato,

Yasugi

et al. 2024

J Soc Info Display

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This paper proposes a novel aerial display system that reconstructs face orientation. The proposed system forms two face images floating in mid‐air. Viewers observe a spatially blended image of the two face images, where the spatial blending ratio depends on the viewing position. Thus, the spatially blended aerial face image is perceived to look in a fixed orientation even if the viewing position is changed within a certain viewing range. We analyze the spatial blending system optical design and show results from our prototype display.

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Section: Introductionmentioning

confidence: 99%

Aerial display that reconstructs face orientation by use of spatial blending of two face images

Kishinami,

Sato,

Yasugi

et al. 2024

J Soc Info Display

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“…These applications had the problem of requiring multiple light sources or large light sources per display direction. In this paper, we use the AIRR combined with infinity mirror optics as an aerial guide 10) . This study is capable of displaying multiple linear images in one direction by placing a single light source between two half mirrors or mirrors.…”

Section: Introductionmentioning

confidence: 99%

[Paper] Multiplication of Aerial Images Toward Four Directions Using Non-Parallel Beam Splitters in AIRR

Kishinami,

Fujii,

Yasugi

et al. 2024

MTA

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An aerial guide that can display guides in multiple directions with compact optics is expected to be effective in guiding in multiple directions at the same time and can be easily installed. These technologies can be applied to Abstract We propose the optical system using two infinity mirrors for aerial imaging in four directions to solve the limitation of display direction in multiple aerial imaging. With no physical contact, aerial images are expected to be an aerial guide that can be displayed directly in front of a person on the walkway. As an additional advantage, the aerial guide can be displayed in any fixed position, even in flowing water or on narrow passageways. Multiple aerial imaging techniques in multiple directions are expected to be used as aerial guides in these situations. From the simulations and the experiments, multiple aerial imaging in four directions was confirmed to be performed using the non-collinear beam splitter arrangement. Furthermore, high reflectance of the beam splitter increased the luminance of the aerial image. In addition, the use of surface reflections from retro-reflector was also found to improve the luminance of the aerial image.

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“…Mid-air imaging is a technology that can display real-life images, which can be seen by the naked eye in a physical space; it can be used for the realization of mixed reality. Studies on mid-air images have proposed a system [1][2][3] using aerial imaging by retroreflection (AIRR) structure [4]. There have also been studies on interactive systems such as MARIO [5], HaptoMime [6], and HaptoClone [7], which use a micro-mirror array plate (MMAP) [8].…”

Section: Introductionmentioning

confidence: 99%

Simulation of mid-air images using combination of physically based rendering and image processing

Hoshi¹,

Kiuchi²,

Koizumi³

2022

Opt Rev

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Although it is beneficial to use an optical simulator to design a mid-air imaging system, the use of a simulator requires optical knowledge, and it cannot be handled by non-specialists. To create a design assistance system that can be used by non-specialists, we demonstrate three methods: a method for extracting mid-air images and images of stray light from computer graphics rendered images, a method for calculating the visible range of mid-air images, and an evaluation of design parameters. First, a mid-air image and an image of stray light are extracted by considering the differences of images rendered using different numbers of bounces at each camera position, after which the visible range of the mid-air image is calculated. In addition, other parameters, such as the distance between a micro-mirror array plate (MMAP) and the extracted mid-air image, are adjusted in detail and evaluated by considering the visible range of the obtained mid-air image. Moreover, to demonstrate the effectiveness of the proposed method, the design of the previous research was improved to eliminate images of stray light, and we reduced the size of the existing system. Unlike other conventional approaches, using the visible range of the extracted mid-air images and without the need for a visual check, our proposed method enables the extraction of mid-air images and unwanted light, and the evaluation of optical systems. This technique can be applied to improve the design of optical systems and in the examination of the related applications.

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Multiple aerial imaging by use of infinity mirror and oblique retro-reflector

Cited by 17 publications

References 26 publications

Aerial display that reconstructs face orientation by use of spatial blending of two face images

Aerial display that reconstructs face orientation by use of spatial blending of two face images

[Paper] Multiplication of Aerial Images Toward Four Directions Using Non-Parallel Beam Splitters in AIRR

Simulation of mid-air images using combination of physically based rendering and image processing

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