著者

佐竹 澪 橋本 典久 橋本 直

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.24, no.3, pp.209-219, 2019-09-30 (Released:2019-09-30)

参考文献数

19

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Photography is trimming of spatiotemporal information of the real world. The clues to know behind the scene of photography will exist in the outside of the photo, such as the surrounding situation, the photographer's motivation, and the process of the shooting. We propose a photo media "Behind the Photo" showing behind the scene of photography. Our proposed method shows photography experience by presenting the frame and the taken photo on the spherical video. We believe that our method will provide a way for photographers to make their content more enjoyable and attractive, and help appreciators to understand the presented photos. In this research, we developed a camera device and a viewer for "Behind the Photo", and evaluated the experiences of photography and appreciation.

著者

星 貴之

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.22, no.3, pp.293-300, 2017 (Released:2017-09-30)

参考文献数

13

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The author is working on an ultrasonic device that produces tactile sensation in midair by focusing ultrasound. The high-intensity ultrasound at the focal point presses the skin surface. Although ultrasound itself is inaudible, audible noise is radiated when the focal point moves around. This noise is not desired for a tactile display because the noise makes the experience worse. This drawback has been found and reported in previous work, however no solution has been provided. This paper discusses the source of this noise and proposes a method to reduce it. The phase discontinuity of driving signals occurs when the focal point moves to the next position, and that leads to the sudden change of amplitude of ultrasonic waves. This sudden change of amplitude is the source of the noise. There are two ways to reduce this noise: One is making the original and target focal positions close and the other is changing the phase gradually. The former is effective only when the frame rate is high. Therefore we explore the latter. The behavior of the focal point during the phase shift is studied by simulation. An algorithm is developed and implemented into the current prototype device. The experimental results show the effectiveness of the proposed method.

著者

小柳 陽光 青山 一真 大村 簾 谷川 智洋 廣瀬 通孝

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.25, no.1, pp.78-85, 2020 (Released:2020-03-31)

参考文献数

21

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In recent years, a service industry is becoming to core of market economics. However, amount of worker are decreasing due to decreasing birthrate and aging population. To hire and train new human resources takes temporal, monetary and human cost. Previous studies have developed training simulator to resolve this issue. However, there is no research that focus on hospitality industry, as long as we know. Hence, we developed Virtual Reality training simulator for ground staff in airport. Specifically, on the basis of theory into practice, we developed a training simulator that can do training repeatable in a short time to maintain a motivation for a job. This system scans user’s facial expression and body movement, and convey to other user via an avatar. We were able to develop training simulator that gives us the feeling of a social presence from grand staff’s comments.

著者

中村 拓人

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会誌 (ISSN:13426680)

巻号頁・発行日

vol.28, no.3, pp.31-33, 2023-09-30 (Released:2023-10-18)

著者

○石塚 裕己 加藤 邦拓 宮下 芳明 梶本 裕之

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

第22回日本バーチャルリアリティ学会大会

巻号頁・発行日

2017-08-21

著者

小玉 亮 高下 昌裕 田口 峻 梶本 裕之

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.21, no.3, pp.529-532, 2016 (Released:2016-10-31)

参考文献数

9

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In this paper, we propose a novel virtual reality entertainment system using a car as a motion platform. The motion platform is usually installed in special locations such as theme park since it requires large cost and space. On the contrary, by using a car as a motion platform, it is already prevalent and it can be transported easily. We developed a prototype system based on the small-sized electric vehicle. Experiment with immersive contents showed that all users responded quite positively to the experience played on a small parking area.

著者

笠原 俊一

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会誌 (ISSN:13426680)

巻号頁・発行日

vol.28, no.2, pp.69-71, 2023-06-30 (Released:2023-07-27)

著者

平尾 悠太朗 三家 礼子 河合 隆史

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.23, no.4, pp.263-270, 2018 (Released:2018-12-31)

参考文献数

20

被引用文献数

1

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This paper describes methods of presenting sense of weight in VR for a wide range of masses. Two approaches are proposed; while lifting a virtual object, 1) the object follows participant's hand with delay, 2) the distance between the hand and the object is increased. These approaches were evaluated in a user study that utilized magnitude estimation and gripping force measurements. The results suggest that participants could perceive multiple different weights using both approaches. Moreover, the ratio between minimum and maximum value of magnitude estimations was 3.2 in the first approach and 4.4 in the second approach.

著者

鳴海 拓志

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会誌 (ISSN:13426680)

巻号頁・発行日

vol.27, no.4, pp.4-5, 2022-12-31 (Released:2023-01-29)

著者

宮本 道人 青山 一真

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会誌 (ISSN:13426680)

巻号頁・発行日

vol.26, no.1, pp.32-33, 2021-03-31 (Released:2021-05-01)

著者

田辺 健 雨宮 智浩 遠藤 博史 井野 秀一

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.25, no.4, pp.291-301, 2020-12-25 (Released:2020-12-25)

参考文献数

72

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When presented with asymmetric vibrations, humans typically experience an illusory force that is similar to the sensation of being pulled toward a particular direction. The pulling illusion has been used in new display elements for a pedestrian navigation system and a VR content because the asymmetric vibrations can be implemented in a small non-grounded device. This paper reviews the findings of the pulling illusion with covering a wide range of topics, including the basic concept, physiological mechanism, optimal parameters for the illusion, the control method of force vectors, the evaluation method of the illusion, and applications. As a result of the review, the research trend of the pulling illusion was confirmed, and the vital points which were stimulation method and parameters of asymmetric vibration to design a haptic interface using the illusion were clarified.

著者

宮本 道人 青山 一真

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会誌 (ISSN:13426680)

巻号頁・発行日

vol.25, no.3, pp.48-49, 2020-09-30 (Released:2020-10-16)

著者

今 悠気 中村 拓人 梶本 裕之

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.22, no.3, pp.335-344, 2017 (Released:2017-09-30)

参考文献数

21

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The Hanger Reflex is a phenomenon in which the head rotates unintentionally when force is applied via a wire hanger placed on the head. It has been confirmed that this phenomenon is caused by pressure, and the direction of the Hanger Reflex contributes to the direction of skin deformation. In addition to the head, similar phenomena have been found in the wrist, waist, and ankle. Until now, we aimed for walking navigation without interpretation of navigation information using the Hanger Reflex, investigated the influence on the head-type, waist-type, and ankle-type Hanger Reflex on walking, it was confirmed that the waist-type Hanger Reflex most efficiently affects walking. However, assuming a scene to actually use as walking navigation, the current waist-type Hanger Reflex device is difficult to say that it is easy to use because the user oneself needs to shift the device. Moreover, in addition to scenes without interpretation of navigation information, it can be assumed that scenes with interpretation of navigation information, such as "Follow" or "Resist". In this paper, in order to use the waist-type Hanger Reflex for actual walking navigation, developed a controlled device of the waist-type Hanger Reflex using four pneumatic actuators, and investigated the effect of the waist-type Hanger Reflex on walking caused by difference in interpretation of navigation information. As a result, we confirmed that the developed waist-type Hanger Reflex device can control the walking path and body direction, depend on user's interpretation difference.

著者

松山 菜々 松田 壮一郎 蜂須 拓

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.27, no.4, pp.283-290, 2022-12-28 (Released:2022-12-28)

参考文献数

25

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This paper presents an experiment to demonstrate that social stimulus (changes in facial expressions) can generate haptic sensations in a human-agent interactions setting. We designed and developed a system in which an human-like agent on the display behaved as if it pulled the mouse cursor against a human participant control. The results of the experiment showed that participants felt significantly larger force when the agent exhibited the negative face during the pulling motion than that when the agents kept the positive face. Besides, the force sensations quantified with control-display ratio negatively correlated with some of sub-scales of the Autism-spectrum Quotient score. This indicates that the social stimulus is as important as physical stimulus when designers and researchers design human-agent haptic interactions.

著者

近藤 亮太 杉本 麻樹

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.27, no.4, pp.353-360, 2022-12-28 (Released:2022-12-28)

参考文献数

34

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Visual-tactile synchronization or visual-motor synchronization makes a non-native body feel like one’s own body (illusory body ownership). Although previous studies have shown that body ownership can be induced in multiple bodies, it is unclear whether body ownership switches between bodies or is generated in multiple bodies simultaneously. We hypothesized that if body ownership is generated in multiple bodies simultaneously, the perception of affordance for aperture pass-ability will change corresponding to the number of bodies. This study investigated whether two avatars moving synchronously with the participant’s movements could induce body ownership in multiple avatars and whether this could change the affordance perception. The results showed that two avatars induced weaker body ownership than one avatar. However, the affordance perception did not change regardless of the number of bodies. One possibility is that the body ownership switched between the two avatars. Thus, even if the body ownership for one body switches between bodies, all the multiple bodies are may still be experienced as one’s own body.

著者

長野 瑞生 櫻井 翔 野嶋 琢也 広田 光一

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.23, no.3, pp.169-177, 2018 (Released:2018-09-30)

参考文献数

22

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Several studies have investigated the influence of appearance and motion of a visually perceivable object, such as a person's image, video, or an avatar in the virtual environment, on the body sense. These studies have primarily examined the effect on the senses of ownership and agency with one's body or with the object while exercising and observing the object in real-time (on-line movement observation). This paper examines the influence of the appearance and motion of an avatar object on recognizing the agent of the object's motion (self-body recognition), when the timings of self-exercising and observing the avatar's motion are different (off-line movement observation). Obtained experimental results show that the visual motion of the avatar has a significant effect on self-body recognition with the avatar. Furthermore, the effect of the avatar's appearance on self-recognition can vary according to the person's gender. It has also been found that increased self-body recognition with the avatar can lead to greater number of flaws being observed in the avatar's motion.

著者

中島 武三志 菅野 由弘

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.21, no.4, pp.585-594, 2016 (Released:2017-02-01)

参考文献数

19

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Wearable devices have been numerously reported so far which aim to augment eating experience by applying crossmodal perception that multiple senses are interacting with each other and are integrated as one experience. As for devices which append sensory stimuli artificially, it is considered that multisensory integration would be lost if a delay between multiple sensory stimuli arises. On the other hand, a novel experience could be also obtained by utilizing the delay. This research investigated the perception of a time-lag between delayed auditory feedback of chewing potatochips and actual chewing behavior. As a result, most of the participants perceived time-lags at more than 200 [ms], and this result can be attributed to the durations of closing and occlusal phase of mastication. This research also investigated the effect of the time-lag on “zakuzaku” (crunchy) feeling of potatochips. As a result, 100 [ms] time-lag augments zakuzaku feeling most, and the evaluation values of zakuzaku feeling tend to vary more widely when the time-lag becomes perceived. According to the above results, this paper showed that delayed auditory feedback of mastication could augment zakuzaku feeling without spoiling multisensory integration.

著者

大山 英明 前田 太郎 舘 [ススム]

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.7, no.1, pp.59-68, 2002-03-31 (Released:2017-02-01)

参考文献数

78

被引用文献数

3

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Telexistence, tele-existence, or telepresence, is an advanced form of teleoperation, which enables a human operator to remotely perform tasks with dexterity, providing the user with the feeling that he or she is present in the remote location. Although tele-existence/telepresence as an engineering concept was proposed in 1979-1981, a comic titled " Jumborg A " proposed and illustrated a primitive tele-existence robot control system in 1970. As a matter of fact, some fictitious robot control systems in novels, comics, animations, and movies precede real robot control systems. In this paper, we will introduce the history of telexistence robots, both in terms of current technology and science fiction

著者

雨宮 智浩

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会誌 (ISSN:13426680)

巻号頁・発行日

vol.28, no.3, pp.36-37, 2023-09-30 (Released:2023-10-18)

著者

近藤 亮太 上田 祥代 杉本 麻樹 南澤 孝太 稲見 昌彦 北崎 充晃

出版者

特定非営利活動法人 日本バーチャルリアリティ学会

雑誌

日本バーチャルリアリティ学会論文誌 (ISSN:1344011X)

巻号頁・発行日

vol.24, no.4, pp.351-360, 2019 (Released:2019-12-31)

参考文献数

28

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We feel as if a fake body is our own body by synchronicity between the fake body and the real body (illusory body ownership). The illusory body ownership can be induced to an invisible full body via the synchronous movement of only the hands and feet. We aimed to investigate whether the illusory ownership occurs to a virtual body with an elongated arm by changing position of the one of the hands, and it changes reaching behavior and/or postural stability. We found that the illusory body ownership was induced to the transformed body by synchronous movement of the hands and feet. Participants’ reaching behavior gradually changed to use the longer arm more than the normal arm during learning of the transformed body within 10 min. Postural stability did not change. These results suggest that we can have illusory ownership of the transformed body with the elongated arm, and our behavior adaptively changes to utilize the new body.