researchmap

researchmap

Language：Others   Publishing type：Research paper (other academic)   Publisher：Proceedings - SIGGRAPH 2022 Emerging Technologies  

We propose "ReQTable", an optical system displaying dual-sided mid-air images to each of four users with less stray light. Dual Slit Mirror Arrays (dual SMAs) can produce a mid-air image that multiple people can view simultaneously without wearing special equipment. Dual SMAs are rectangular and can theoretically display mid-air images in the four surrounding directions. However, they also produce unwanted light, called stray light, which is especially noticeable when mid-air images are displayed in some directions. It is difficult for users to identify stray lights, and they cannot concentrate on viewing only the mid-air images. To improve a user experience, it is necessary to suppress stray light. ReQTable displays mid-air images in four directions with stray light reduction.

DOI： 10.1145/3532721.3535563

Scopus

researchmap

Other Link： https://dblp.uni-trier.de/db/conf/siggraph/siggraph2022et.html#TakenawaKYFN22

Language：English   Publishing type：Research paper (other academic)  

Comparing World and Screen Coordinate Systems in Optical See-Through Head-Mounted Displays for Text Readability while Walking.

DOI： 10.1109/ISMAR50242.2020.00093

Language：Others   Publishing type：Research paper (other academic)  

DOI： 10.1145/3415255.3422883

Language：English   Publishing type：Research paper (scientific journal)  

Suppression of floating image degradation using a mechanical vibration of a dihedral corner reflector array
Dihedral corner reflector arrays (DCRAs) are imaging devices that form real images and are used in a variety of applications, including floating virtual touchscreens and image presentation around physical objects. However, they induce several types of degradations to floating images. It is desirable to suppress these degradations to provide better viewing experiences. This paper proposes a method of suppressing degradations which appear as high-frequency noise by using mechanical vibration. The effects of vibrating the DCRA were confirmed through an analysis of the floating image quality in the frequency domain. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

DOI： 10.1364/OE.406005

Language：English   Publishing type：Research paper (other academic)  

We propose an imaging system, "ViPlate," for suppressing degradations of a mid-air image. A retro-transmissive plate (RT plate) can form a mid-air image that can be seen by multiple users simultaneously with their naked eyes. However, the actual RT plate causes certain image degradations, for instance, visible lattice patterns of the RT plate, discontinuous distortions, and blurring. To improve a user's viewing experience, it is desirable to improve the image quality. ViPlate smoothens the discontinuous distortions and makes the lattice pattern invisible by vibrating the RT plate. Therefore, mid-air images can be made clear and easily visible.

DOI： 10.1145/3388534.3407305

Language：English   Publishing type：Research paper (scientific journal)  

Second language (L2) learners often lack opportunities or motivation to dedicate their time to vocabulary learning over other daily activities. In this work, we introduce a mobile application that allows L2 learners to instead leverage their "dead time", such as when walking to and from school or work, to study new vocabulary items. The application combines audio learning and location-based contextually relevant L1-L2 word pairs to allow L2 learners to "discover" new foreign language words while walking. We report on the evaluation of the approach from three aspects: L2 vocabulary retention after 1 month, system usability and workload.

DOI： 10.1145/3369824

Language：English   Publishing type：Research paper (scientific journal)  

EmoTan: enhanced flashcards for second language vocabulary learning with emotional binaural narration
We report on the design and evaluation of a flashcard application, enhanced with emotional binaural narration to support second language (L2) vocabulary learning. Typically, the voice narration used in English vocabulary learning is recorded by native speakers with a standard accent to ensure accurate pronunciation and clarity. However, a clear but monotonous narration may not always aid learners in retaining new vocabulary items in their semantic memory. As such, enhancing textual flashcards with emotional narration in the learner's native language can foster the retention of new L2 words in episodic rather than semantic memory as greater emotive expression reinforces episodic memory retention. We evaluated the effects of binaural emotive narration with traditional textual flashcards on L2 word retention (immediate and delayed) in laboratory experiments with native Japanese-speaking English learners. Our results suggest that the learners were able to retain approximately 60% more L2 words long-term with the proposed approach compared to traditional flashcards.

DOI： 10.1186/s41039-019-0109-0

Authorship：Last author   Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：16th International Congress on Advanced Applied Informatics (IIAI AAI 2024)  

researchmap

Authorship：Last author   Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：ASSET Symposium in conjunction with ACM MobiSys2024  

researchmap

Language：English   Publishing type：Research paper (other academic)  

Publisher：MOBISYS 2024 - Proceedings of the 2024 22nd Annual International Conference on Mobile Systems, Applications and Services  

Since office work has become large-scale and diversified in companies or organizations, work engagement and efficiency have been always an important index of a team's or group's evaluation because it is directly connected to their outcomes. In order to identify the group work context, we first need to recognize for what and how long the individual members are spending their time at their desks, but without privacy concerns and underestimation of their actual work. In this paper, we propose and evaluate the base system of personal desk activity recognition by using a low-cost compact WiFi node and its WiFi channel state information (CSI), which can lead to a lightweight group work context identification system. As a result, we achieved 94.2% desk activity recognition accuracy using the on-desk receiver, in recognizing five different classes.

DOI： 10.1145/3643832.3661452

Web of Science

Scopus

Publisher：2024 8th International Conference on Robotics, Control and Automation, ICRCA 2024  

Dense video captioning tasks are used to detect interesting events and provide descriptive text for these events from untrimmed videos. This technology has the potential to be used in security surveillance and human care applications. However, current methods often overlook the relationships between objects in the video, which limits their applicability and makes it challenging to adapt them to specific domains, such as video summarization for indoor human activities. In these scenarios, human activities are closely intertwined with the objects in the scene. In this paper, we propose a plug-and-play module designed to enhance existing dense video captioning methods with spatial information. Specifically, we extract spatial information about the interesting objects using Red-Green-Blue-Depth (RGB-D) images and the results of image segmentation. We then integrate this information into the captions generated by the Dense Video Captioning (DVC) method using a fine-tuned Large Language Model (LLM). We evaluate the performance of our model on a custom dataset and demonstrate that our system provides a convenient and effective approach for obtaining space-enhanced captions.

DOI： 10.1109/ICRCA60878.2024.10649311

Scopus

Language：Others   Publishing type：Research paper (other academic)  

DOI： 10.23919/icmu58504.2023.10412218

Language：Others   Publishing type：Research paper (other academic)   Publisher：IEEE  

In this paper, we propose ToonMeet, a hybrid frame-work for high-resolution and style-controllable online meeting toonification that ensures real-time operation speed. ToonMeet applies video frame interpolation to traditional portrait toonification pipelines, allowing for the synthesis of intermediate frames between adjacent toonified keyframes, significantly accelerating the overall process and saving computational resources. However, this approach brings a new problem, where prevailing flow-based video frame interpolation methods tend to cause more ghost and blur artifacts in toonified scenes compared to non-toonified scenes, especially when fast-moving objects exist. We study this previously undiscussed problem and explore its causes. To address this, we introduce a new dataset called TM3B (Toonified Multi-modal Meeting Behaviors), offering high-resolution and cross-platform multi-modal stylized meeting data of Japanese youth in various scenarios. Then, we fine-tune ToonMeet on these tailored data and the resulting model presents improved optical flow estimation ability on toonified videos. Extensive experiments demonstrate that ToonMeet can achieve great spatiotemporal performance and perform high-quality toonification of online meetings with real-time operation speed.

DOI： 10.1109/ictai59109.2023.00013

Web of Science

Scopus

researchmap

Publisher：30th International Conference on Computers in Education Conference, ICCE 2022 - Proceedings  

The English Picture Dictionary is a dictionary of stock pictures that represent meanings of English words. Following this, our aim was to create an audio repository of stock sounds that similarly represent meanings of English words. To effectively express the meaning of various English words through sound, we used binaural recording technology. For example, when recording the word "fetch, " it was represented as a sound movement by moving a dummy microphone head from side to side, while pronouncing the word. This paper reports the results of a comparison between the effects of binaural and monaural audio on the learning of English vocabulary.

Scopus

Language：Others   Publishing type：Research paper (other academic)   Publisher：UIST 2022 Adjunct - Adjunct Proceedings of the 35th Annual ACM Symposium on User Interface Software and Technology  

Invisible screen-camera communication is promising in that it does not interfere with the video viewing experience. In the imperceptible color vibration method, which displays two colors of the same luminance alternately at high speed for each pixel, embedded information is decoded by taking the difference between distant frames on the time axis. Therefore, the interframe differences of the original video contents affect the decoding performance. In this study, we propose a decoding method which utilizes simultaneously captured images using a dual-camera smartphone with different exposure times. This allows taking the color difference between the frames that are close to each other on the time axis. The feasibility of this approach is demonstrated through several application examples.

DOI： 10.1145/3526114.3558672

Web of Science

Scopus

researchmap

Other Link： https://dblp.uni-trier.de/db/conf/uist/uist2022a.html#KakuiAHFN22

Language：English   Publishing type：Research paper (other academic)   Publisher：IEEE  

We propose "AIR-range"- a system that seamlessly connects mid-air images from the surface of a table to mid-air space. This system can display tall mid-air images in the three-dimensional (3D) space beyond the screen. AIR-range is implemented using a symmetrical mirror structure that displays a large image by integrating multiple imaging paths. The mirror arrangement in previous research had a problem in that the luminance was discontinuous. In this study, we theorize the relationship between the parameters of optical elements and the appearance of mid-air images and optimize an optical system to minimize the difference in luminance between image paths.

DOI： 10.1109/VRW55335.2022.00212

Web of Science

Scopus

researchmap

Other Link： https://dblp.uni-trier.de/db/conf/vr/vr2022w.html#KikuchiYFSN22

Language：English   Publishing type：Research paper (scientific journal)  

Imperceptible Color Vibration for Screen-Camera Communication via 2D Binary Pattern
Communication between screens and cameras has attracted attention as a ubiquitous information source, motivated by the widespread use of smartphones and the increase of public information screens. The method that encodes data into visible patterns impairs the user's visual experience. Previously, embedding matrix barcodes into images on displays by utilizing imperceptible color vibration was proposed. In this approach, the visual experience is maintained considering that barcodes are imperceptible, and it can be implemented on almost any display and camera. Herein, we describe a sophisticated modulation protocol and restoration procedure whereby device characteristics such as the display's gamma feature and the smartphone's rolling shutter are taken into consideration. Extensive experiments reveal the parameters for the modulation and that this system works under practical situations. In addition, scenarios of potential practical applications and a user study examining imperceptibility of barcodes and usability of the system are presented to illustrate the technological capabilities.

DOI： 10.3169/mta.8.170

Language：Others   Publishing type：Research paper (other academic)  

DOI： 10.1145/3355049.3360538

Language：English   Publishing type：Research paper (scientific journal)  

Dynamic PVLC: Pixel-level Visible Light Communication Projector with Interactive Update of Images and Data
We previously studied methods leveraging pixel-level visible light communication (PVLC) that embeds imperceptible information for human eyes in each pixel of an image. The PC computation load and amount of data transferred between the PC and projector in previous PVLC systems were excessive because the PC executed both the video and data encoding processes. As a result, it was impossible to achieve both high-dynamic-range images and dynamic updates of the images and data. In this paper, we propose a dynamic PVLC system that offers high video quality and interactively updates the PVLC information through hardware encoding processing. Our system can project a 24-bit gradation color PVLC video that contains 64-bit data at 120 fps by synchronously controlling the ON/OFF states of the DMD and LED light sources at the given performance limit of the projector.

DOI： 10.3169/mta.7.160

Language：English   Publishing type：Research paper (scientific journal)  

PILC Projector: Image Projection With Pixel-Level Infrared Light Communication
Invisible-light communication between a projector and multiple devices on the projection plane enables humancomputer interaction applications such as movable displays and pointing devices. In this paper, we propose a pixel-level infrared light communication (PILC) projector that can project rich, invisible position-dependent information on high-contrast, full-color visible images. Although previous methods for such communication sacrificed the image quality, the amount of information, or other features, our method meets all the requirements by adding an infrared light source to a full-color DLP projector. This system alternately projects visible images and invisible data sequences with visible and infrared light, respectively. As proof of concept, we built a functional prototype and confirmed that its image contrast is more than 60 times that of a previous method while maintaining pixel-level position accuracy. In addition, we investigated flicker-perception rates in response to different amounts of embedded information and discovered that we could send rich information (up to approximately 2 kbps) with imperceptible flicker. Finally, we built a tabletop application with the proposed system, in which users can simultaneously see both an aerial photograph and a map through movable displays.

DOI： 10.1109/ACCESS.2019.2950068

Language：English   Publishing type：Research paper (scientific journal)  

Owing to the pervasive use of displays and smartphones, mobile interactions with display screens have gained attention within the advertising and gaming industries as well as in human-computer interaction research. Communication through QR code-like markers and localization via AR markers are common examples of such interactions. However, these visible markers interfere with the display content; this problem is critical for localization over a wide range of interactions, and fewer markers result in less reliability and accuracy. Although some studies have addressed this issue, few have focused on near-screen interaction without additional hardware. To address this problem, we propose an easy-to-install localization method that uses an array of AR markers, which are made imperceptible to the human eye through chromaticity vibration at 30 Hz. We mainly focus on applications, such as digital signage, where users point their smartphones at the display content. Through four evaluations, we confirm that the pointing error is within 1 mm, and that the proposed system works, when the distance between the screen and smartphone is 4-24 times the size of the AR marker. In addition, we establish that our system is robust against rotation. Finally, we present two potential application scenarios, advertising and navigation.

DOI： 10.1109/ACCESS.2019.2921580

Language：English   Publishing type：Research paper (other academic)  

Second language (L2) learners often lack opportunities or motivation to dedicate their time to vocabulary learning over other daily activities. In this work, we introduce a mobile application that allows L2 learners to instead leverage their "dead time", such as when walking to and from school or work, to study new vocabulary items. The application combines audio learning and location-based contextually relevant L1-L2 word pairs to allow L2 learners to "discover" new foreign language words while walking. We report on the evaluation of the approach from three aspects: L2 vocabulary retention after 1 month, system usability and workload.

DOI： 10.1145/3311823.3311866

Language：English   Publishing type：Research paper (other academic)  

Design of Enhanced Flashcards for Second Language Vocabulary Learning with Emotional Binaural Narration.
In this paper, we report on the design of a flashcard application with which learners experience the meaning of written words with emotional binaural voice narrations to enhance second language vocabulary learning. Typically, voice used in English vocabulary learning is recorded by a native speaker with no accent, and it aims for accurate pronunciation and clarity. However, the voice can also be flat and monotonous, and it can be difficult for learners to retain the new vocabulary in the semantic memory. Enhancing textual flashcards with emotional narration in the learner's native language helps the retention of new second language vocabulary items in the episodic memory instead of the semantic memory. Further, greater emotionality in the narration reinforces the retention of episodic memory.

DOI： 10.1145/3311823.3311867

Language：English   Publishing type：Research paper (other academic)  

PILC Projector: RGB-IR Projector for Pixel-level Infrared Light Communication
The projection of invisible data on visible images can facilitate seamless interactive projection, since data embedded in regular images is unobtrusive to human viewers. However, the previous techniques sacrificed one of the following key goals: 1) calibration-free setup; 2) full-color projection; or 3) high contrast image. In this paper, we propose a Pixel-level Infrared Light Communication (PILC) projector that achieves all these requirements by adding an infrared light source to the full-color projector. To provide a proof of concept, we built a functional prototype, evaluated its performance, and presented a basic application.

DOI： 10.1109/VR.2019.8797714

Language：English   Publishing type：Research paper (other academic)  

Pixel-level Visible Light Communication Projector with Interactive Update of Images and Data

Language：English   Publishing type：Research paper (other academic)  

Screen-Camera Communication via Matrix Barcode Utilizing Imperceptible Color Vibration.
Communication between screens and cameras has attracted attention as a ubiquitous information source, motivated by the widespread use of smartphones and the increase of public advertising and information screens. We propose embedding matrix barcodes into images projected on displays by utilizing imperceptible color vibration. This approach maintains the visual experience as the barcodes are imperceptible and can be implemented on almost any display and camera for the technology to be pervasive. In fact, the color vibration can be generated by ordinary 60 Hz LCDs and captured by 120 fps smartphone cameras. To illustrate the technology capabilities, we present scenarios of potential practical applications.

DOI： 10.1145/3266037.3271638

Language：English   Publishing type：Research paper (scientific journal)  

Phygital Field: an Integrated Field with Physical Robots and Digital Images using Projection-based Localization and Control Method

Language：Others  

Tracky Notes: A Marker for Sticky Notes to be Tracked Robustly

Language：English   Publishing type：Research paper (other academic)  

In addition to displaying images, graphic display devices can be configured to transmit information to nearby computing devices, to facilitate human interaction with the image. However, some existing methods require the use of visible markers, which impairs the visual experience, while others require specially modified projectors.. To solve these problems, we propose a novel method that employs imperceptible color vibration to embed pixel-by-pixel data into images on an ordinary LCD display
this is achieved by fixing the luminance and vibrating only the chromaticity of the color of each pixel. We show that five different data values can be embedded and detected with adequate responsiveness for human-computer interaction (HCI). It is expected that our method will be applied to wearable tactile displays, robot controls, and other similar technologies.

DOI： 10.1145/3027063.3053074

Language：Others  

© Springer Japan KK 2017. All rights reserved. The aim of this project is to design and demonstrate the future of information environment where people get together. Personal computers and smart devices have succeeded in augmenting the ability of each person. At now, even when people meet at a place, they tend to gaze at their own displays. As a result, they cannot concentrate on face-to-face communication among them. This means that current information technology well designed for personal activities is insufficient for group ones. The authors believe that this problem is mainly caused by the limitation of current display technology. For exceeding this limitation, this article introduces three approaches: (1) privacy control of display content for promoting discussion in groups, (2) projection-based control of physical objects for suppressing the incompatibility between the physical and digitalworlds and (3) spatial imaging for augmented reality among people without wearable displays. These contributions can transform existing personal display technology to novel inter-personal one which is useful for people getting together.

DOI： 10.1007/978-4-431-56535-2_6

Language：English   Publishing type：Research paper (scientific journal)  

Visual stimuli in the form of special lighting effects are often used to provide additional entertainment when musicians perform. Many technologies have been developed to synchronize visual and audio effects
for example, a CMOS camera can be used to capture the motions of the strings of string instruments as a visual medium. However, because a CMOS sensor scans video line-by-line in sequence, fast moving objects are distorted during the scanning sequence. This morphing and distortion are known as the rolling-shutter effect, which is considered an artistic photographic technique such as strip photography and slit-scan photography. This effect can only be seen in a camera viewfinder or on a PC screen and is usually not perceived by the naked eye. We aimed to overcome this problem by developing a system to allow the rolling-shutter effect to be observed in real time using spatially divided stroboscopic projection. The system produces a wobbly slow-motion effect by animating the sweep lines. Our system also alters the color and texture of strings using a projection of the color and texture sweep lines. Furthermore, it can also change the shape of strings to arbitrary two-dimensional shapes such as geometric patterns or patterns consisting of characters.

DOI： 10.1016/j.entcom.2016.11.004

Language：English   Publishing type：Research paper (other academic)  

We propose a novel method for the localization and navigation of multiple mobile robots. Our method uses coded light superimposed onto a visual image and projected onto the robots. Robots localize their position by receiving and decoding the projected light, and can follow a target using the coded velocity vector field. Localization and navigation information can be independently conveyed in each pixel, and we can change this information over time. The entire system only requires a projector to navigate the robot swarm; thus, it can be used on any projection surface. To navigate the robots, they only need to be placed within the projection area. We experimentally assess the localization accuracy of our system for both stationary and moving robots. To further illustrate the utility of our proposed system, we demonstrate the navigation of multiple mobile robots in vector fields that vary both spatially and temporally.

DOI： 10.1109/SII.2016.7844108

Language：English   Publishing type：Research paper (other academic)  

Nodding has various communicative functions in humans, such as agreement, emphasis and turn-taking and can also create various positive impressions in communication by the person exhibiting the behavior. The ultimate aim of our research is to facilitate communication by implementing nodding behavior in robots. This study analyzed videos of human conversations in groups and focused on three aspects of people's nodding behavior as they listened to others: 1) Time period to complete a nodding cycle and each nods, 2) Time delay before initiating a nodding response, and 3) Number of continuous nods used at one time. We found that: 1) The mode time period to a nod was 0.27 s, with 96% of all nods occurring within 0.17∼0.57 s. 2) The mode time delay before initiating a nodding response was 0.30 s, with 95% of all nods occurring within -0.78∼1.4 s. 3) Fewer than six continuous nods were used 97% of the time one nod, 55%, two nods, 24%, three nods, 12%, four nods, 3.0%, and five nods, 2.1%. Ultimately, the research findings serve as guidelines for implementing accurate human nodding behavior in robots. Copyright is held by the owner/author(s).

DOI： 10.1145/2957276.2996287

Language：English   Publishing type：Research paper (other academic)  

Video records are sometimes used during meetings nowadays in order to compensate for the incompleteness of hand-written minutes. To use video effectively to record the minutes of a meeting, indices are considered necessary in addition to standard functions of movie players. Some systems can form indices by sensing human actions in the world, but such indices are not directly relevant to the contents of the discussions that occur in meetings. In this study, we propose an automated meeting index system based on people's discussions during daily meetings in the world. In our system, indices based on the contents of discussion can be automatically formulated in meetings if only paper, writing implements, and a camera are arranged in a certain manner. To this end, we develop trackable sticky notes, called "Tracky Notes," as indices. Tracky Notes can be tracked with visible markers through a camera, and is robust against occlusion. We then propose a meeting viewer where Tracky Notes are used as indices. Finally, we report the result of a user study conducted in a university classroom. The study revealed the appropriate region of visible markers and the robustness against occlusion of Tracky Notes. We also measured the effectiveness of our system comparing with standard functions of movie players. Copyright is held by the owner/author(s).

DOI： 10.1145/2957276.2996285

Language：English   Publishing type：Research paper (other academic)  

Collaboration between computer graphics and multiple robots has attracted increasing attention in several areas. To preserve the seamless connection between them, the system needs to be able to accurately determine the position and state of the robots and be able to control them easily and instantly. However, realizing a responsive control system for a large number of mobile robots without complex settings and at the same time avoiding the system load problem is not trivial. Our system, called "Phygital Field", can project two types of information: visible images for humans and data patterns for mobile robots in the same location by utilizing pixel-level visual light communication (PVLC) technology. Phygital Field offers two technical innovations: an initialization-free and marker-free localization and control method, and a system noted for its simplicity and scalability. Phygital Field enables the robots to always recognize their own positions and states immediately, the measurement devices are not required because localization and control of the robots are realized through projection. These features are very important to improve the reconfigurability of the system. The idea of controlling robots by using information embedded in projected images allows users to easily design an integrated environment for the physical robots and digital images to preserve the seamless connection between them.

DOI： 10.1145/2988240.2988242

Language：English   Publishing type：Research paper (other academic)  

There are three key factors that can reduce the productivity of brainstorming. In this study, we focus on evaluation apprehension, whereby the fear of negative evaluations from other members prevents subjects from generating and presenting their ideas. To mitigate evaluation apprehension problem, we propose a novel approach that reduces the effort required to give positive feedback. We introduce a physical analogue to Facebook's "Like" button, enabling people to give positive feedback expressly and casually with a physical button in face-to-face brainstorming. We examined how this system can be used "in the wild.".

DOI： 10.1145/2851581.2892418

Language：Japanese  

Reconfigurable Pixel-level Visible Light Communication with Light Source Control
PVLC (Pixel-level Visible Light Communication) is a method that can embed human-imperceptible metadata in projected images with high-speed flickering. A significant advantage of the method is that no displacement or offset problems occur without a separate position measurement step. However, previous projection systems utilize PVLC can update neither invisible data nor visible images in real time due to its technical limitation. To solve this problem, we propose RPVLC (Reconfigurable Pixel-level Visible Light Communication) system that can update the data and the images dynamically, reconfigure the trade-off between image frame rate and image resolution, and control full color LED light source. In this paper, RPVLC system design, method, implementation, and its performance evaluations are detailed.

DOI： 10.18974/tvrsj.21.1_197

Language：Japanese  

爆笑カメラ:笑い声により自然な笑顔を撮影するカメラシステム

Language：English   Publishing type：Research paper (other academic)  

This paper proposes a new shadow interface system that provides tactile feedback from a user's shadow to physical body. When users obstruct the projected image by their bodies, wearable photoreactive tactile displays receive the light information; they decode it and transmit tactile sensation. The proposed system does not require complex sensing, complicated settings and communication systems; it can perform high speed tactile feedback with the information directly received from the projected light. Perspective projection of the projected image and occluding objects that generate shadows is preserved in principle; all the users have to do is obstructing the projected light. In this paper, we present the concept, the first prototype of the system, and basic evaluations. The system can easily serve as a human interaction system with touch sensitive shadow, and it has potential applications in the areas of interactive entertainment and user interfaces.

DOI： 10.1145/2875194.2875199

Language：English   Publishing type：Research paper (other academic)  

When we snap strings playing with a CMOS camera, the strings seems to vibrate in a wobbly slow motion pattern. Because a CMOS sensor scans one line of video in sequence, fast moving objects are distorted during the scanning sequence. The morphing and distorting are called a rolling shutter effect, which is considered to be an artistic photographic techniques like strip photography and slitscan photography. However, the effect can only be seen on a camera finder or a PC screen
the guitar player and audience are quite unlikely to notice it by the naked eye.

DOI： 10.1145/2782782.2792485

Language：English   Publishing type：Research paper (other academic)  

When we snap strings playing with a CMOS camera, the strings seems to vibrate in a wobbly slow motion pattern. Because a CMOS sensor scans one line of video in sequence, fast moving objects are distorted during the scanning sequence. The morphing and distorting are called a rolling shutter effect, which is considered to be an artistic photographic techniques like strip photography and slitscan photography. However, the effect can only be seen on a camera finder or a PC screen
the guitar player and audience are quite unlikely to notice it by the naked eye.

DOI： 10.1145/2782782.2792485

Language：English   Publishing type：Research paper (other academic)  

Forming images by using a swarm of mobile robots has emerged as a new platform for computer entertainment. Each robot has col- ored lighting, and the swarm represents various abstract patterns by using the lighting and the locomotion. The aim of our research is to create a novel display field named Phygital Field, which integrates the physical world created by robot swarms and the digital world produced by a graphical display. To integrate them, we used a pixel-level visible light communica- Tion (PVLC) projector [Kimura et al. 2008], which can superimpose data patterns on pixels by human-imperceptible high speed flicker. This data patterns contains coordinates, control instructions, and more types of information that you want to program. By combin- ing a swarm of robots and the graphical display, each type of image can be augmented. So far, several types of systems for the symbiosis of robots and computer graphics have been proposed [Sugimoto et al. 2005]. Compared with these works, Phygital Field has three technical in- novations: An initialization-free and marker-free display method, the simplicity of the total system, customizable data transmission.

DOI： 10.1145/2787626.2792604

Language：English   Publishing type：Research paper (other academic)  

When taking a photo, such verbal prompts as "cheese", or "smile", are often used by photographers to get natural smiles from their subjects. However, since the obtained smiles usually look forced or resemble a grimace, capturing a natural smile is difficult. We propose an active camera system called "Laughin'Cam", that obtains natural-looking portraits by eliciting spontaneous smiles by presenting the sound of laughter. The proposed system utilizes an emotional contagion effect, which is the tendency of emotional behavior to spread from person to person. We conducted an evaluation experiment with our proposed system using computer vision and also performed a subjective experiment. Our results suggested that our system could efficiently induce naturally-looking and spontaneous smiles.

DOI： 10.1145/2702613.2732721

Language：Japanese  

Emotional Vibration: Enhancement of emotion using a Combination of Sound and Skin Sensation to the Pinna
Most people often experience music with accompanying emotion in every day of their lives, and the emotion sometimes become critical in determining the quality of the music experience. The goal of this paper is to enrich quality of the music experience with directly facilitating the emotion. To facilitate emotion in music, this paper presents a method that simultaneously presents sound and skin sensation to the pinna. The emotion enhancement effect of the method is evaluated in user studies, and the effect was compared between the other body parts (back, arms, fingers). The findings show that the method can enhance emotion that induces sympathetic nerve activity, and pinna is one of the most effective parts to enhance the sympathetic emotion.

DOI： 10.18974/tvrsj.19.4_467

Language：English   Publishing type：Research paper (other academic)  

We have developed the Pixel-level Visible Light Communication (PVLC) projector based on the DLP (Digital Light Processing) system. The projector can embed invisible data pixel by pixel into a visible image to realize augmented reality applications. However, it cannot update either invisible or visible contents in real time. In order to solve the problem, we improve the projector so that a PC can dynamically control the system and enable us to achieve a high-frame-rate feature by resolution conversion. This paper proposes the system framework and the design method for the dynamically reconfigurable PVLC projector.

DOI： 10.1117/12.2041936

Language：English   Publishing type：Research paper (other academic)  

The project aims to pioneer a new field of information media technology for providing intuitive understanding and promoting face-to-face communication in everyday living environments and public spaces. Moreover, the project will explore some methodologies for producing emergent effects such as spurring intellectual curiosity and creative drive. Current information media technology is located in the confined situation in physical displays. As a result, our daily activities are divided into two categories: using digital equipment or not. It is time to explore a new technological field to pull down the barrier separating real and information worlds. For this purpose, the project develops methods that extend our real world by information technology. Especially, the project will focus on the nature of " spatial interaction," "compatibility," and "openness" in order to eliminate the physical constraints of display devices, enhance the compatibility between daily commodities and information devices, and activate the face-to-face communication by giving high priority concern to privacy issues.

DOI： 10.1109/ICAT.2013.6728919

Language：English   Publishing type：Research paper (other academic)  

An itch is a significant problem for many diseases and relief of itch without side effect is required. We focused on the fact that painful thermal stimulation inhibits the itch sensation. Based on two well-known phenomena, thermal grill illusion and synthetic heat, which can generate pain or burning sensation without physical damage, we tried to achieve similar effect with harmless-range thermal stimulation.We developed a roller-type itch-relief device. The roller is composed of two parts. One part is set hot and the other is set cold by embedded Peltier devices. When the device is rolled on the user’s skin, the skin is exposed to hot and cold stimuli alternatively. We also evaluated the elicited sensation and confirmed that it could partly deliver pain sensation.

DOI： 10.1145/2468356.2468428

Language：English   Publishing type：Research paper (other academic)  

Sensing the position and movement of the accelerator pedal in a vehicle is important for acceleration control and safety while driving. The accelerator pedal is controlled by the foot, but precise adjustment requires much training because the driver must rely on somatosensory cues, which provide limited feedback. In this study, we propose periodic tactile feedback for the accelerator pedal to provide an additional tactile cue. We conducted an experiment using a driving simulator to compare the lap time, the rate of off-track incidents and the subjective evaluation of controllability recorded in questionnaires. The experiment confirmed that the feedback makes the control of acceleration easier and facilitates safer driving.

DOI： 10.1109/WHC.2013.6548406

Language：English   Publishing type：Research paper (other academic)  

With the aim of augmenting auditory sensation by tactile stimuli, we investigated cross-modal relationships between the two modalities, focusing on frequency. The results showed that frequency consonance between tactile and audio stimuli depends on the relationship between harmonics, in a manner similar to auditory waves, but with broader peaks.

DOI： 10.1109/WHC.2013.6548487

Language：English   Publishing type：Research paper (other academic)  

A gaze input interface offers hands-free operation by using the view-point position as the cursor coordinates on the display. However, the selection operation of a button is indistinguishable from viewing
this is known as the Midas touch problem. We propose a new input method that measures divergence eye movement, thereby enabling users to “press” a button by moving their viewpoint forward. Comparison of our method and the conventional blinking input method confirms that input speed and accuracy are similar.

DOI： 10.1145/2468356.2468594

Language：English   Publishing type：Research paper (other academic)  

Optimal selection of electrodes for muscle electrical stimulation using twitching motion measurement
Muscle electrical stimulation envisions a wide range of human augmentation application. However, the applications commonly have issue of optimal electrodes placement. In this paper, we propose a method to select the optimal electrodes placement for finger flexion using twitching motion measurement. We delivered electrical stimulation producing twitching motion and measured the acceleration. By summing and averaging the acceleration waveforms and taking the difference between the maximum and minimum value, we measured the contribution of the electrical stimulation and used it to select the optimal electrodes pair for the movement. Preliminary experiment with four electrodes showed feasibility of our method. Copyright 2013 ACM.

DOI： 10.1145/2459236.2459279

Language：English   Publishing type：Research paper (other academic)  

Characters with body materials that are different from that of humans, such as metal robots or rubber people, frequently appear in movies and comics. While the abilities of their synthetic bodies can be easily observed from their actions, their somatic sensations are more difficult to appreciate. Our aim in this work is to simulate the alteration of the material of the human body by means of vibrotactile feedback. The feedback represents the properties of the materials and is periodically applied to the elbow joint in synchrony with the elbow angle. This simulated sensation of having a different body material gives us the feeling of those characters. This technique can also be applied to improve maneuverability in the teleoperation of master-slave systems because it gives the operator a robot-like sensation.

DOI： 10.1109/VR.2013.6549354

Language：English   Publishing type：Research paper (other academic)  

Development of roller-type itch-relief device employing alternating hot and cold stimuli
Painful thermal stimulation is known to inhibit itch, which is a significant problem in many diseases. We focused on thermal grill illusion and synthetic heat, which are well-known phenomena that can generate pain or burning sensation without physical damage
we tried to achieve a similar effect via a harmless-range thermal stimulation. We developed a roller-type itch-relief device. When the device is rolled onto the user's skin, the skin is alternately exposed to hot and cold stimuli. The roller is composed of an aluminum pipe cut into two parts along the longitudinal axis. One part is set to hot and the other is set to cold by embedded Peltier devices. When the device is rolled on the user's skin, the skin is alternately exposed to hot and cold stimuli. In addition, vibration is applied so that a virtual scratching feeling is presented without damage to the skin. We evaluated the device by eliciting an itch using a lactic acid solution and then applying the device. The results showed that the device provides effective temporal relief from itch and that its effect continues for a few minutes. Copyright 2013 ACM.

DOI： 10.1145/2459236.2459244

Language：English   Publishing type：Research paper (other academic)  

Evaluation of a tactile device for augmentation of audiovisual experiences with a pseudo heartbeat
The impression that the viewer has of characters is an important factor affecting the viewer's opinion of audiovisual media, such as movies, television and video games. In particular, when we feel affection toward characters, we sometimes go so far as to identify ourselves as one of them, leading to extreme immersion in the content of the media. Therefore, there is the possibility that content technology can control affective feelings towards characters and create an immersive environment. We propose a device that can be used to facilitate the affection of the user by controlling their positive feelings toward characters in the media content. Previous studies have shown that emotional or physiological states can be altered by the visual and auditory presentation of false heartbeats [1, 2, 3]. However, if these techniques are applied to audiovisual media such as movies, television, or video games, the audio and visual heartbeat cues may interfere with and pollute the audiovisual content. Copyright 2013 ACM.

DOI： 10.1145/2459236.2459282

Language：English   Publishing type：Research paper (other academic)  

Currently, touch panels are used in many devices, and there have been many proposals to add tactile sensation to touch panels, which require additional electro-mechanical components. In this paper, we propose a simple method of adding a tactile sensation of a ridge, using just a thin sheet. The sheet has ridges that are haptically imperceptible, but once a visual cue such as a line is presented, visuotactile cross-modal response induces a haptic ridge. We tested the effects of the visual cue and height of the ridge. The result showed that the visual cue definitely enhances feeling of a ridge. © 2012 Authors.

DOI： 10.1145/2396636.2396694

Language：English   Publishing type：Research paper (other academic)  

In recent years, touch panels have become widespread as an intuitive means to activate device operations. Because the touch panel has a space over which a finger and a corresponding cursor moves, certain actions become intuitive compared to force input-type devices such as a pointing stick. If we could add an illusory feeling of finger motion with the force input interface, it would become more intuitive. We have found a new haptic illusion of "motion", which occurs when an electrical tactile flow is presented on the fingertip while experiencing a shearing force. We have also investigated occurrence conditions, focusing on the relation between shear force and movement speed of the electrical tactile stimulation. In our study, we investigated directional characteristic focusing on the illusory position of the finger perceived using a new electrocutaneous display mounted on a six-axis force sensor. © 2012 Authors.

DOI： 10.1145/2396636.2396692

Language：Others  

Language：English   Publishing type：Research paper (other academic)  

In audio-visual entertainment such as listening to music, game playing, and viewing movies, people frequently seek a richer experience. However the improvement in experience that can be obtained by improving audio and visual quality is reaching its limit. © 2012 ACM.

DOI： 10.1145/2343456.2343461

Language：Others  

Language：English   Publishing type：Research paper (other academic)  

We present a new haptic augmented reality system that modulates the perceived stiffness of a real object by changing the perceived material with vibratory subtraction and addition. Our system consists of a stick with a vibrotactile actuator and a pad with an elastic sheet. When a user taps the pad, the innate vibration resulting from the tapping is absorbed by the elastic surface. Simultaneously, the vibrotactile actuator provides the intended vibration, which represents a modulated perceived material property such as rubber, wood, or aluminum. The experimental results showed that the participants were able to discern the three materials by tapping. © 2012 Springer-Verlag.

DOI： 10.1007/978-3-642-31401-8_16

Language：Others   Publishing type：Research paper (other academic)  

Facilitation of affection by tactile feedback of false heratbeat.

DOI： 10.1145/2212776.2223796

Language：English   Publishing type：Research paper (other academic)  

Along public pathways, visual signs and audio cues are used by pedestrians to guide them into forming smoother pedestrian flows. However, often ignored or neglected, these signals require greater pedestrian attentiveness and appropriate conscious effort. To solve this problem, we have proposed the concept of "vection field". This is a field of optical flow that cues movement according to a pedestrian's motion. Visual stimulus within this optical flow leads pedestrians innately in specific directions without requiring direct interventions. We have implemented such a field by covering the ground with a lenticular lens screen; in this setup, neither power supply nor position tracking of pedestrians is necessary. An experimental result from our previous study shows that a vection field can direct pedestrians to one side. However, the quality of the optical flow such as image clarity and smoothness of motion was unsatisfactory in that it could cause a reduction in leading inducement. In this paper, we describe in detail a new display method involving a lenticular lens screen that yields an improvement in the quality of the vection field and ultimately pedestrian optical flow. Experiments showed improvements over previous attempts.

DOI： 10.1145/2254556.2254689

Language：English   Publishing type：Research paper (other academic)  

Transmission of forearm motion by tangential deformation of the skin
When teaching device handling skills such as those required in calligraphy, sports or surgery, it is important that appropriate arm motion is transmitted from the trainer to the trainee. In this study, we present a novel, wearable haptic device that produces arm motion using force sensation. The device produces skin deformation and a pseudo-force sensation that is similarly to the force produced when the arm is "pulled". The device generates skin deformation in four directions, and in this paper we have evaluated the device using a directions perception experiment. Copyright 2012 ACM.

DOI： 10.1145/2160125.2160141

Language：English   Publishing type：Research paper (other academic)  

Augmentation of kinesthetic sensation by adding "rotary switch feeling" feedback
In sports, dancing and playing music, it is important to achieve correct body movement as it greatly affects performance. However, matching one's movement with ideal movement is fundamentally difficult, because we do not have a detailed perception of our own body movement. In this study, we propose to present "rotary switch feeling" feedback as a new haptic cue. A periodical ticking sensation, like that of a rotary switch, can be presented at each joint so that the user vividly perceives his/her movement. This paper presents a simple mechanical prototype that is attached to the elbow. Copyright 2012 ACM.

DOI： 10.1145/2160125.2160153

Language：English   Publishing type：Research paper (other academic)  

Facilitating a surprised feeling by artificial control of piloerection on the forearm
There have been many proposals that have added haptic stimulation to entertainment content such as music, games, and movies. These technologies enrich the quality of the experiences by improving the reality thereof. In contrast, we present a novel approach to enrich the quality of these experiences by facilitating the emotional feeling evoked by the content. In this paper, we focus on piloerection, which is a kind of involuntary emotional reaction. Our hypothesis is that not only is it an emotional "reaction", but it can also work as an emotional "input" that enhances the emotion itself. We have constructed a device that controls piloerection on the forearm through electrostatic force. Based on a psychophysical experiment, we confirm that the piloerection system enhances the feeling of surprise. Copyright 2012 ACM.

DOI： 10.1145/2160125.2160133

Language：English   Publishing type：Research paper (other academic)  

Looming silhouette: An approaching visual stimulus device for pedestrians to avoid collisions
We are exposed daily to the risk of collision at numerous blind intersections. To avoid the risk of collision, we propose a system that elicits an "approaching sensation" by presenting a visual stimulus. Possible factors for the approaching sensation are the "expansion" and "motion" of a silhouette. We compared the effects of these two factors on the approaching sensation and found that to elicit an approaching sensation, the expansion factor is important, and the motion factor has a certain effect in alarming pedestrians. On the base of this result, we produced a system that presents an expanding and moving silhouette of an approaching pedestrian to the pedestrians user. Copyright 2012 ACM.

DOI： 10.1145/2160125.2160148

Language：English   Publishing type：Research paper (other academic)  

Fingertip Slip Illusion with an Electrocutaneous Display

Language：English   Publishing type：Research paper (other academic)  

We present a novel touch sensitive handheld device, called Palm Touch Panel, which provides electro-tactile feedback on the back of the device thus simulating the sensation of being able to touch the user's palm directly through the device. Users hold the mobile device, which has an electro-tactile display attached at the back. When a finger touches the visual cues on the front screen panel, such as a button or an icon, the electro-tactile display at the back transmits the unique tactile sensation associated with this behavior of the cues to the palm of the hand. As a result, we speculate that the user can manipulate visual information with less visual attention, or even potentially in an eyes-free manner. In this paper we discuss the creation of this unique mobile device that allows the palm to be used for tactile feedback, thus enhancing the touch screen experience. © 2011 ACM.

DOI： 10.1145/2076354.2076370

Language：Japanese  

口腔内動作を入出力とする触覚コミュニケーションデバイス
<p>In this study, we propose a novel communication device for intimate users. We focus on kisses, since kisses are haptic communications that can express deep emotion. We considered that if we mutually present the haptic sensation to each mouth, we can convey the expression of emotion, deepen their relationship. We made a first prototype using water-balloons, and a second prototype using bended rods. We also conducted an experiment to evaluate the effect of the device to the relationship between users, by measuring frequencies of eye-contact and smiles, and confirmed the effectiveness of our device.</p>

DOI： 10.11184/his.13.4_335

Language：Japanese  

口腔内動作を入出力とする触覚コミュニケーションデバイス

Language：English   Publishing type：Research paper (other academic)  

In this paper, we propose a novel stick-type interface, the "HaCHIStick," for musical performance on a tablet PC. The HaCHIStick is composed of a stick with an embedded vibrotactile actuator, a visual display, and an elastic sheet on the display. By combining the kinesthetic sensation induced by striking the elastic sheet with vibrotactile sensation, the system provides natural haptic cues that enable the user to feel what they strike with the stick, such as steel or wood. This haptic interaction would enrich the user's experience when playing the instruments. The interface is regarded as a type of haptic augmented reality (AR) system, with a relatively simple setup. © is held by the owner/author(s).

DOI： 10.1145/2046396.2046429

Language：English   Publishing type：Research paper (other academic)  

We propose a tactile enhancement structure inspired by hair follicle receptors. Unlike other receptors, part of the hair follicle receptor is exposed to the outside. Recent research has shown that skin hair contributes to perception of minute forces that cannot be perceived with glabrous skin. We considered how the skin perceives these minute forces. Our tactile enhancement device mimics the structure of hair follicle receptors. A matrix structure simulating artificial body hair is driven by minute forces external to the skin surface. This structure can be used on any surface of the human body because it is fully composed of passive elements. © 2011 IEEE.

DOI： 10.1109/WHC.2011.5945508

Language：English   Publishing type：Research paper (other academic)  

Weight illusion by tangential deformation of forearm skin
When we perform exercise or undergo rehabilitation, it is helpful to be supported by another person. To get this support, we normally take hold of a person's arm, and pull it. In this paper, we investigate the use of a special device to produce a "pulling arm" sensation on the forearm. Using a weight comparison task, we performed an experiment to confirm the sensation of illusory external force with our device. We concluded that our current device presented about 10g to 20g weight perception. Copyright © 2011 ACM.

DOI： 10.1145/1959826.1959836

Language：English   Publishing type：Research paper (other academic)  

Public pathways, in areas such as stations and concert halls, can present pedestrian crowds with difficulties, for example, congestions and collisions (Figure 1-a). Although visual signs and audio cues are commonly used for smoother pedestrian flow, they are often ignored or neglected because they require some time to be understood. For more intuitive navigation, wearable devices have been proposed, some of which induce motion using a haptic device [Kojima et al. 2009] or vestibular stimuli [Maeda et al. 2005]. However, these personal navigation devices are not suitable for congestion scenarios because numerous devices are required for controlling pedestrian flow, which is quite impractical. In this paper, we propose a novel method to control pedestrian flow using an environmental visual cue, which is produced by the placement of large lenticular lenses on the floor.

DOI： 10.1145/2048259.2048280

Language：English   Publishing type：Research paper (other academic)  

"Vection Field" for pedestrian traffic control
Visual signs and audio cues are commonly used for pedestrian control in the field of general traffic research. Because pedestrians need to first acquire and then recognize such cues, time delays invariably occur between cognition and action. To better cope with this issue of delays, wearable devices have been proposed to control pedestrians more intuitively. However, the attaching and removing of the devices can be cumbersome and impractical. In this study, we propose a new visual navigation method for pedestrians using a "Vection Field" in which the optical flow is presented on the ground. The optical flow is presented using a lenticular lens, a passive optical element that generates a visual stimulus based on a pedestrian's movement without an electrical power supply. In this paper we present a design for the fundamental visual stimulus and evaluate the principle of our proposed method for directional navigation. Results revealed that the optical-flow of a stripe and random-dot pattern displaced pedestrian pathways significantly, and that implementation with a lenticular lens is feasible. Copyright 2011 ACM.

DOI： 10.1145/1959826.1959845

Language：English   Publishing type：Research paper (other academic)  

We aimed to generate a visual sensation of motion in any direction, with both video and still images. In drawings such as comics, radial or parallel patterns are often used to represent the direction of motion and velocity of objects. In recent years, another approach has been developed, using characteristics of the human visual system to induce the perception of motion. One such example is the Fraser illusion [Chi et al. 2008]. In all these approaches, the background is hidden, which decreases the realism of the image. We propose a new method of conveying motion, utilizing characteristics of foveal and peripheral vision. Our method recognizes that users can perceive motion without image distortion.

DOI： 10.1145/1900354.1900400

Language：English   Publishing type：Research paper (other academic)  

Recent development in sound technologies has enabled the realistic replay of real-life sounds. Thanks to these technologies, we can experience a virtual real sound environment. However, there are other types of sound technologies that enhance reality, such as acoustic filters, sound effects, and background music. They are quite effective if carefully prepared, but they also alter the sound itself. Consequently, sound is simultaneously used to reconstruct realistic environments and to enhance emotions, which are actually incompatible functions. With this background, we focused on using tactile modality to enhance emotions and propose a method that enhances the sound experience by a combination of sound and skin sensation to the pinna (earlobe). In this paper, we evaluate the effectiveness of this method.

DOI： 10.1145/1866218.1866248

Language：Japanese  

笑い増幅器:笑い増幅効果の検証

Language：Japanese  

笑い増幅器:笑い増幅効果の検証

Language：English   Publishing type：Research paper (other academic)  

In television shows, we are familiar with the sound of artificial laughter, the so called "canned laughter" or "laugh track". It generally has an enhancing effect on the viewer's desire to laugh. However, if the sound is played when the user dislikes the content, it works negatively. To cope with this problem, we propose a system that produces the laugh track synchronized with the user's desire to laugh. We use a use a myoelectric signal from the diaphragmatic muscle to detect an initial laugh, and dolls around the user to produce the laugh sound. We speculated that although the initial laugh trigger from the user is necessary, the system can still effectively enhance the laugh activity, and even affect the subjective quality of the contents. © 2010 Copyright is held by the author/owner(s).

DOI： 10.1145/1753846.1754027

Language：Others   Publishing type：Research paper (other academic)  

Pull-navi: a novel tactile navigation interface by pulling the ears.

DOI： 10.1145/1597956.1597975

Language：English   Publishing type：Research paper (other academic)  

We created a new entertainment called "Ants in the Pants". A user can see many ants moving around on a visual display. The user's hand is placed into a tactile display in the form of a glove that has a matrix of small motors with brushes inside it. When the user places their gloved hand on the visual display, the user can feel a sensation as if ants are crawling up their arm. We have tested the system with more than 500 participants. In response to a questionnaire, about 75% of users responded that the experience was "enjoyable" and 54% that it was "realistic". Moreover, our work was able to entertain most people regardless of their reaction to the experience. We believe our "Ants in the Pants" opened the door to a new type of "uncomfortable, creepy but enjoyable" entertainment.

DOI： 10.1109/SICE.2008.4654699

Language：Others   Publishing type：Research paper (other academic)  

Ants in the Pants.

DOI： 10.1145/1401615.1401618

Language：English   Publishing type：Research paper (other academic)  

There have been many proposals for controlling moving objects with a tabletop interface. However it has been difficult to miniaturize or simplify the system. We propose a new simple tabletop system using the table's circular vibration and controllable friction of the moving object.

DOI： 10.1145/1358628.1358933

Language：Japanese  

Country：Other  

Language：Japanese  

Country：Other  

Language：Japanese  

Country：Other  

Language：Japanese  

Country：Other  

Language：English  

Country：Other  

Harmonized Inter-Personal Display Project

Language：Japanese  

Country：Other  

笑い増幅器

Language：Japanese  

Country：Other  

Language：Japanese  

Country：Other  

Language：Japanese  

Country：Other  

Language：Japanese  

Country：Other  

Language：English  

Country：Other  

Harmonized Inter-Personal Display Project

Language：Japanese  

Country：Other  

笑い増幅器

Language：Japanese  

Country：Japan  

A Design of Visual Effects for Promoting Joint Attention During Shared VR Experiences via a Projection of HMD User’s View

Language：Japanese  

Country：Japan  

Initial Study on Learning Vocabulary Generation Methods for Language Acquisition from User Actions in IVR

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Initial Design of a Real-time Feedback System for Encouraging Reactions from Junior High School Students during Regular and Cram School Lessons

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Initial Study on Light Stimuli to Reproduce Emotional Pupillary Responses Induced by Sound Stimuli

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Factor Analysis of Elation in the Lottery

Language：Japanese  

Country：Japan  

Live Control of Avatar Motion Using Mode Selection and Hand Movement Input

Language：Japanese  

Country：Japan  

Robust Recognition of Imperceptible Markers Embedded in Videos: A Dual Camera System for Simultaneous Capturing

Language：Japanese  

Country：Japan  

Suppressing stray light of tabletop display that provides dual-sided mid-air images in four directions

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Language：Japanese  

Country：Japan  

Authorship：Last author   Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Authorship：Last author   Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Authorship：Last author   Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Japanese  

Improving the Decoding Success Rate of Position Data with Interference Detection between Surrounding Subregions in Pixel-level Visible Light Communication

Language：Japanese   Publishing type：Research paper, summary (national, other academic conference)  

J-GLOBAL

researchmap

Language：Others  

Language：Japanese  

Designing a VR Application for Eliciting Enactment Effect during English Vocabulary Learning-Effects of Environment Rendering-

Language：Japanese  

Effects of Optical See-Through Head-Mounted Displays Text Presentation Distance on Readability and Vertical Head Sway While Walking

Language：Others  

Language：Others  

Language：Japanese  

AIR-range: Arranging mid-AIR images from the table surface to the mid-air space considering luminance continuity

Language：Japanese  

Improving the Contrast Ratio of Pixel-level Visible Light Communication Projectors Using Blinking Control of Light Sources

Language：Japanese  

A Color Vibration Method Robust to Interframe Difference for Embedding Imperceptible Markers in Videos

Language：Japanese  

Extending the Readable Range of Imperceptible Fiducial Markers with Color Vibration for Screen-Camera Communication

Language：Japanese  

Imperceptible QR Code on Display Using Image Color Vibration

Language：Japanese  

Language：Japanese  

Language：Japanese  

Projecting the Grouping History of Sticky Notes for Reflecting Groupwork Discussion

Language：Japanese  

Language：Japanese  

Effects of Text Anchoring Position on Readability with Augmented Reality Head-Mounted Displays

Language：Japanese  

Comparing the Readability of Japanese Vertical and Horizontal Writing on Smart Glasses While Walking

Language：Japanese  

Language：Japanese  

The Effects of Speaker-following Subtitles on Memory Retention of Video-based Vocabulary Learning Content

Language：Japanese  

English Vocabulary Learning by Associating Words with Living Spaces Using Photography

Language：Others  

Language：Japanese  

Language：Japanese  

Language：Japanese  

Language：Japanese  

Language：Japanese  

Language：Japanese  

Language：Japanese  

Language：Japanese  

Encoding Scheme for Improving Image Quality and Data Transfer Rate of PVLC Projector

Language：Japanese  

Encoding Scheme for Improving Image Quality and Data Transfer Rate of PVLC Projector

Language：Others  

Fundamental study on spelling similarity for English vocabulary building system

Language：Others  

Clustering of Sticky notes in Groupwork

Language：Japanese  

Language：Japanese  

Language：Japanese  

Language：Japanese  

Language：Japanese  

場所法を応用したAR英単語学習システムに向けた基礎検討

Language：Japanese  

A Study on Nodding Parameters of Listener Robots

Language：Japanese  

場所法を応用したAR英単語学習システムに向けた基礎検討

Language：Japanese  

A Study on Nodding Parameters of Listener Robots

Language：Japanese  

ロボットのうなずき表出に向けた人のうなずき行動の分析

Language：Japanese  

可視光通信プロジェクタの映像品質改善のための符号化方式の基礎検討

Language：Japanese  

LCDカラー映像に情報を重畳するための不可視な色変調方式の基礎検討

Language：Japanese  

ロボットのうなずき表出に向けた人のうなずき行動の分析

Language：Japanese  

A-9-19 A Proposal of MPPM using Gray-Code-like Mapping for Pixel-level Visible Light Communication

Language：Japanese  

空間分割型可視光通信におけるグレイ符号を拡張したマッピングによるMPPM方式の提案

Language：Japanese  

なるほどボタン:褒める効果音ボタンを用いたブレインストーミング支援システムの検討

Language：Japanese  

A-9-19 A Proposal of MPPM using Gray-Code-like Mapping for Pixel-level Visible Light Communication

Language：Japanese  

空間分割型可視光通信におけるグレイ符号を拡張したマッピングによるMPPM方式の提案

Language：Japanese  

なるほどボタン:褒める効果音ボタンを用いたブレインストーミング支援システムの検討

Language：Japanese  

Color Space Selection Method for Improving Color Representation of PVLC Projector

Language：Japanese  

Color Space Selection Method for Improving Color Representation of PVLC Projector

Language：Others  

Language：Japanese  

Language：Japanese  

Brainstorming support using a voting button with interjection sound effects

Language：Japanese  

Field Work Lecture at The University of Tokyo : Groupwork of Future : Future Discussion with Technology

Language：Japanese  

Brainstorming support using a voting button with interjection sound effects

Language：Japanese  

Blinking Control of Light Sources on Pixel-level Visible Light Communication Projector

Language：Japanese  

Blinking Control of Light Sources on Pixel-level Visible Light Communication Projector

Language：Japanese  

Blinking Control of Light Sources on Pixel-level Visible Light Communication Projector

Language：Japanese  

Blinking Control of Light Sources on Pixel-level Visible Light Communication Projector

Language：Japanese  

Controlling Swarms of Robots using a PVLC Projector

Language：Japanese  

Controlling Swarms of Robots using a PVLC Projector

Language：Japanese  

Practical Study on a Face-to-face Information Sharing System with Sub Displays in Groupwork
If you bring laptops or PCs into groupwork situations, discussion is hardly conducted actively. Therefore, we developed systems for information sharing by placing a sub display on the back of the PC. We have used these systems in groupwork lecture. However there are problems of the previous systems in a practical environment, such as trouble of network load and not switching window. In this paper, we implement a system to solve this problem. We used this system in groupwork lecture practically.

Language：Japanese  

Practical Study on a Face-to-face Information Sharing System with Sub Displays in Groupwork
If you bring laptops or PCs into groupwork situations, discussion is hardly conducted actively. Therefore, we developed systems for information sharing by placing a sub display on the back of the PC. We have used these systems in groupwork lecture. However there are problems of the previous systems in a practical environment, such as trouble of network load and not switching window. In this paper, we implement a system to solve this problem. We used this system in groupwork lecture practically.

Language：Japanese  

Emotion Interface in the Fields of Entertainment and Communication

DOI： 10.7210/jrsj.32.692

Language：Others  

Language：Japanese  

A Basic Study on Neck Heat Application Effect on Music Experience

Language：Japanese  

背面投影式空間分割型可視光通信のスクリーン近傍への拡張

Language：Japanese  

A camera system for taking a picture of natural smile with presenting laughter sound

Language：Japanese  

Language：Japanese  

A Basic Study on Neck Heat Application Effect on Music Experience

Language：Japanese  

背面投影式空間分割型可視光通信のスクリーン近傍への拡張

Language：Japanese  

A camera system for taking a picture of natural smile with presenting laughter sound

Language：Others  

Language：Japanese  

Practical user study of Round-Table Browsing : a system for supporting face-to-face collaborative web search

Language：Japanese  

A Basic Study on Multiplexing of PVLC Projectors

Language：Japanese  

Practical user study of Round-Table Browsing : a system for supporting face-to-face collaborative web search
Recent years researches about facilitating communication between members and improving efficiency of web search have been done. Especially Inter-Personal Browsing(IPB) has solved a problem that using PC within group works makes it lack of face-to-face communication. In this paper, we introduce Round-Table Browsing, which is an improved system about sharing browse histories and report results of a practical use of the system.

Language：Japanese  

A Basic Study on Multiplexing of PVLC Projectors
These days, research on multi-projection is emerging which enable us to spread projected image and create novel interactions. We believe that PVLC Projector which conveys optical bit data signal while shows image is suit for combining with multi-projection technology, because that enable us to multiplex visual images and bit data. There is not research for method and feasibility of multiplexing PVLC projectors, so we propose multiplexing methods using directivity of photo sensors, polarizer and Lumisty Film, then examine this method&#039;s feasibility by measuring accuracy of communication.

Language：Japanese  

Language：Japanese  

Practical user study of Round-Table Browsing : a system for supporting face-to-face collaborative web search
Recent years researches about facilitating communication between members and improving efficiency of web search have been done. Especially Inter-Personal Browsing(IPB) has solved a problem that using PC within group works makes it lack of face-to-face communication. In this paper, we introduce Round-Table Browsing, which is an improved system about sharing browse histories and report results of a practical use of the system.

Language：Japanese  

A Basic Study on Multiplexing of PVLC Projectors
These days, research on multi-projection is emerging which enable us to spread projected image and create novel interactions. We believe that PVLC Projector which conveys optical bit data signal while shows image is suit for combining with multi-projection technology, because that enable us to multiplex visual images and bit data. There is not research for method and feasibility of multiplexing PVLC projectors, so we propose multiplexing methods using directivity of photo sensors, polarizer and Lumisty Film, then examine this method&#039;s feasibility by measuring accuracy of communication.

Language：Japanese  

1A1-E04 Operation of Liquid Viscous Feeling by Modulating the Vibration of Being Poured from a Japanese Sake Bottle(Haptic Interface (1))
The impression of food can be affected by "rendition"-i.e., the surrounding environment such as the appearance of the food and the dish-not just by its taste. We focused on the sound and vibration of liquid being poured from a Japanese Sake bottle as a haptic rendition of liquid. We expect that these sounds and vibrations affect the subjective impression of the liquid in the bottle. To examine this idea, we propose a method that reproduces the vibration of being poured liquid from a Japanese Sake bottle by measuring and modeling real vibrations. We measured the vibration of water by tilting a Sake bottle, and created a model consisting of two decaying sinusoidal waves with different frequencies. By measuring and modeling the vibration of different liquids with various viscosities, we found that subjective viscosity can be represented by modulating amplitudes of the two decaying waves.

Language：Japanese  

温冷刺激を用いたローラー型痒み抑制器の開発

Language：Japanese  

徳利振動の変調による液体の粘性感操作

Language：Japanese  

ピクピク運動計測による筋電気刺激の最適な電極配置の選択手法の検討

Language：Japanese  

Reality‐Basedな周期的衝撃感呈示による身体材質感の変調

Language：Japanese  

2P1-G08 Automatic Selection of Optimal Electrodes for Muscle Electrical Stimulation Using Twitching Motion Measurement(Sense, Motion and Measurement (3))
Muscle electrical stimulation envisions a wide range of human augmentation application. However, the applications commonly have the issue of optimal electrode placement. The electrode moves according to the body position; thereby, the calibration of the optimal electrode placement is needed every time the body moves. In this paper, we propose a method to select an optimal electrode pair for finger flexion using twitching motion measurement. We delivered electrical stimulation producing twitching motion via four electrode pairs and measured the acceleration. Using the acceleration value, we selected the optimal electrode pair that twitched the finger the most. Preliminary experiment with four electrodes showed feasibility of our method.

Language：Japanese  

2A2-G03 Virtual Alteration of Body Material by reality-Based Periodic Vibrotactile Feedback(Sense, Motion and Measurement (2))
Characters with body materials that are different from that of humans, such as metal robots or rubber people, frequently appear in movies and comics. While the abilities of their synthetic bodies can be easily observed from their actions, their somatic sensations are more difficult to appreciate. Our aim in this work is to simulate the alteration of the material of the human body by means of reality-based vibrotactile feedback. The feedback represents the properties of the materials and is periodically applied to the elbow joint in synchrony with the elbow angle. This simulated sensation of having a different body material gives us the feeling of those characters. This technique can also be applied to improve maneuverability in the teleoperation of master-slave systems because it gives the operator a robot-like sensation.

Language：Japanese  

2A2-A14 Frequency Consonance between Tactile and Auditory(Tactile and Force Sensing (2))
With the aim of augmenting auditory sensation by tactile stimuli, we investigated cross-modal relationships between the two modalities, focusing on frequency. The results showed that frequency consonance between tactile and audio stimuli may depend on the relationship between harmonics, in manner similar to auditory waves, but with broader peaks.

Language：Japanese  

2A2-A13 Development of Roller-Type Itch-Relief Device Employing Alternating Temperature Stimuli(Tactile and Force Sensing (2))
Painful thermal stimulation is known to relieve itch, which is a significant problem in many diseases. We focused on thermal grill illusion and synthetic heat, which are well-known phenomena that can generate pain or burning sensation without physical damage; we tried to achieve a similar effect via a harmless-range thermal stimulation. We developed a roller-type itch-relief device. When the device is rolled onto the user&#039;s skin, the skin is alternately exposed to hot and cold stimuli. The roller is composed of aluminum parts. One part is set to hot and the other is set to cold by embedded Peltier devices. When the device is rolled on the user&#039;s skin, the skin is alternately exposed to hot and cold stimuli. In addition, vibration is applied so that a virtual scratching feeling is presented without damage to the skin. We evaluated the device by eliciting an itch using a lactic acid solution and then applying the device. The results showed that the device provides effective temporal relief from itch and that its effect continues for a few minutes.

Language：Japanese  

触覚‐聴覚間における周波数的協和性

Language：Japanese  

触覚‐聴覚間における周波数的協和性
With the aim of augmenting auditory sensation by tactile stimuli, we investigated cross-modal relationships between the two modalities, focusing on frequency. The results showed that frequency consonance between tactile and audio stimuli may depend on the relationship between harmonics, in manner similar to auditory waves, but with broader peaks.

Language：Japanese  

温冷刺激を用いたローラー型痒み抑制器の開発
Painful thermal stimulation is known to relieve itch, which is a significant problem in many diseases. We focused on thermal grill illusion and synthetic heat, which are well-known phenomena that can generate pain or burning sensation without physical damage; we tried to achieve a similar effect via a harmless-range thermal stimulation. We developed a roller-type itch-relief device. When the device is rolled onto the user&#039;s skin, the skin is alternately exposed to hot and cold stimuli. The roller is composed of aluminum parts. One part is set to hot and the other is set to cold by embedded Peltier devices. When the device is rolled on the user&#039;s skin, the skin is alternately exposed to hot and cold stimuli. In addition, vibration is applied so that a virtual scratching feeling is presented without damage to the skin. We evaluated the device by eliciting an itch using a lactic acid solution and then applying the device. The results showed that the device provides effective temporal relief from itch and that its effect continues for a few minutes.

Language：Japanese  

徳利振動の変調による液体の粘性感操作
The impression of food can be affected by "rendition"-i.e., the surrounding environment such as the appearance of the food and the dish-not just by its taste. We focused on the sound and vibration of liquid being poured from a Japanese Sake bottle as a haptic rendition of liquid. We expect that these sounds and vibrations affect the subjective impression of the liquid in the bottle. To examine this idea, we propose a method that reproduces the vibration of being poured liquid from a Japanese Sake bottle by measuring and modeling real vibrations. We measured the vibration of water by tilting a Sake bottle, and created a model consisting of two decaying sinusoidal waves with different frequencies. By measuring and modeling the vibration of different liquids with various viscosities, we found that subjective viscosity can be represented by modulating amplitudes of the two decaying waves.

Language：Japanese  

ピクピク運動計測による筋電気刺激の最適な電極配置の選択手法の検討
Muscle electrical stimulation envisions a wide range of human augmentation application. However, the applications commonly have the issue of optimal electrode placement. The electrode moves according to the body position; thereby, the calibration of the optimal electrode placement is needed every time the body moves. In this paper, we propose a method to select an optimal electrode pair for finger flexion using twitching motion measurement. We delivered electrical stimulation producing twitching motion via four electrode pairs and measured the acceleration. Using the acceleration value, we selected the optimal electrode pair that twitched the finger the most. Preliminary experiment with four electrodes showed feasibility of our method.

Language：Japanese  

Reality‐Basedな周期的衝撃感呈示による身体材質感の変調
Characters with body materials that are different from that of humans, such as metal robots or rubber people, frequently appear in movies and comics. While the abilities of their synthetic bodies can be easily observed from their actions, their somatic sensations are more difficult to appreciate. Our aim in this work is to simulate the alteration of the material of the human body by means of reality-based vibrotactile feedback. The feedback represents the properties of the materials and is periodically applied to the elbow joint in synchrony with the elbow angle. This simulated sensation of having a different body material gives us the feeling of those characters. This technique can also be applied to improve maneuverability in the teleoperation of master-slave systems because it gives the operator a robot-like sensation.

Language：Japanese  

2P1-G08 Automatic Selection of Optimal Electrodes for Muscle Electrical Stimulation Using Twitching Motion Measurement(Sense, Motion and Measurement (3))
Muscle electrical stimulation envisions a wide range of human augmentation application. However, the applications commonly have the issue of optimal electrode placement. The electrode moves according to the body position; thereby, the calibration of the optimal electrode placement is needed every time the body moves. In this paper, we propose a method to select an optimal electrode pair for finger flexion using twitching motion measurement. We delivered electrical stimulation producing twitching motion via four electrode pairs and measured the acceleration. Using the acceleration value, we selected the optimal electrode pair that twitched the finger the most. Preliminary experiment with four electrodes showed feasibility of our method.

Language：Japanese  

2A2-G03 Virtual Alteration of Body Material by reality-Based Periodic Vibrotactile Feedback(Sense, Motion and Measurement (2))
Characters with body materials that are different from that of humans, such as metal robots or rubber people, frequently appear in movies and comics. While the abilities of their synthetic bodies can be easily observed from their actions, their somatic sensations are more difficult to appreciate. Our aim in this work is to simulate the alteration of the material of the human body by means of reality-based vibrotactile feedback. The feedback represents the properties of the materials and is periodically applied to the elbow joint in synchrony with the elbow angle. This simulated sensation of having a different body material gives us the feeling of those characters. This technique can also be applied to improve maneuverability in the teleoperation of master-slave systems because it gives the operator a robot-like sensation.

Language：Japanese  

2A2-A14 Frequency Consonance between Tactile and Auditory(Tactile and Force Sensing (2))
With the aim of augmenting auditory sensation by tactile stimuli, we investigated cross-modal relationships between the two modalities, focusing on frequency. The results showed that frequency consonance between tactile and audio stimuli may depend on the relationship between harmonics, in manner similar to auditory waves, but with broader peaks.

Language：Japanese  

2A2-A13 Development of Roller-Type Itch-Relief Device Employing Alternating Temperature Stimuli(Tactile and Force Sensing (2))
Painful thermal stimulation is known to relieve itch, which is a significant problem in many diseases. We focused on thermal grill illusion and synthetic heat, which are well-known phenomena that can generate pain or burning sensation without physical damage; we tried to achieve a similar effect via a harmless-range thermal stimulation. We developed a roller-type itch-relief device. When the device is rolled onto the user&#039;s skin, the skin is alternately exposed to hot and cold stimuli. The roller is composed of aluminum parts. One part is set to hot and the other is set to cold by embedded Peltier devices. When the device is rolled on the user&#039;s skin, the skin is alternately exposed to hot and cold stimuli. In addition, vibration is applied so that a virtual scratching feeling is presented without damage to the skin. We evaluated the device by eliciting an itch using a lactic acid solution and then applying the device. The results showed that the device provides effective temporal relief from itch and that its effect continues for a few minutes.

Language：Japanese  

1A1-E04 Operation of Liquid Viscous Feeling by Modulating the Vibration of Being Poured from a Japanese Sake Bottle(Haptic Interface (1))
The impression of food can be affected by "rendition"-i.e., the surrounding environment such as the appearance of the food and the dish-not just by its taste. We focused on the sound and vibration of liquid being poured from a Japanese Sake bottle as a haptic rendition of liquid. We expect that these sounds and vibrations affect the subjective impression of the liquid in the bottle. To examine this idea, we propose a method that reproduces the vibration of being poured liquid from a Japanese Sake bottle by measuring and modeling real vibrations. We measured the vibration of water by tilting a Sake bottle, and created a model consisting of two decaying sinusoidal waves with different frequencies. By measuring and modeling the vibration of different liquids with various viscosities, we found that subjective viscosity can be represented by modulating amplitudes of the two decaying waves.

Language：English  

Input Method Using Divergence Eye Movement
A gaze input interface offers hands-free operation by using the view-point position as the cursor coordinates on the display. However, the selection operation of a button is indistinguishable from viewing
this is known as the Midas touch problem. We propose a new input method that measures divergence eye movement, thereby enabling users to “press” a button by moving their viewpoint forward. Comparison of our method and the conventional blinking input method confirms that input speed and accuracy are similar.

DOI： 10.1145/2468356.2468594

Language：English  

Input Method Using Divergence Eye Movement
A gaze input interface offers hands-free operation by using the view-point position as the cursor coordinates on the display. However, the selection operation of a button is indistinguishable from viewing
this is known as the Midas touch problem. We propose a new input method that measures divergence eye movement, thereby enabling users to “press” a button by moving their viewpoint forward. Comparison of our method and the conventional blinking input method confirms that input speed and accuracy are similar.

DOI： 10.1145/2468356.2468594

Language：Japanese  

Line-Sensing Haptic Interface for Visually Impaired
Numerous electronic travel aids (ETA) for visually impaired people have been proposed. However, they often take a long time to scan and understand the surrounding environment. In this paper, we propose a novel ETA based on combination of 1-D line depth sensing and 2-D tactile display. We conducted an experiment to compare the efficiency of the proposed system compared to the existing device. The result showed that with the proposed device, users could detect obstacles more efficiently while walking.

Language：Japanese  

Adding tactile sensation to touch panel by using visuo-tactile cross-modal phenomenon

Language：Japanese  

Adding tactile sensation to touch panel by using visuo-tactile cross-modal phenomenon
There have been many proposals to add tactile sensation to touch panels, but most of them require additional electro-mechanical components and not suitable for mobile terminals. In this paper, we propose a simple method of adding tactile sensation of a bump, just by a thin sheet. The sheet has bumps that are haptically imperceptible, but once a visual stimulus such as a line is presented, visuo-tactile cross-modal mechanism induces haptic bump. We reported two experiments. First experiment tested whether these tactile sensation improves the performance of flick input. Second experiment tested how much subjective ridge height was emphasized by this phenomenon.

Language：Japanese  

Line-Sensing Haptic Interface for Visually Impaired

Language：Japanese  

Line-Sensing Haptic Interface for Visually Impaired
Numerous electronic travel aids (ETA) for visually impaired people have been proposed. However, they often take a long time to scan and understand the surrounding environment. In this paper, we propose a novel ETA based on combination of 1-D line depth sensing and 2-D tactile display. We conducted an experiment to compare the efficiency of the proposed system compared to the existing device. The result showed that with the proposed device, users could detect obstacles more efficiently while walking.

Language：Japanese  

Adding tactile sensation to touch panel by using visuo-tactile cross-modal phenomenon

Language：Japanese  

Adding tactile sensation to touch panel by using visuo-tactile cross-modal phenomenon
There have been many proposals to add tactile sensation to touch panels, but most of them require additional electro-mechanical components and not suitable for mobile terminals. In this paper, we propose a simple method of adding tactile sensation of a bump, just by a thin sheet. The sheet has bumps that are haptically imperceptible, but once a visual stimulus such as a line is presented, visuo-tactile cross-modal mechanism induces haptic bump. We reported two experiments. First experiment tested whether these tactile sensation improves the performance of flick input. Second experiment tested how much subjective ridge height was emphasized by this phenomenon.

Language：Japanese  

Line-Sensing Haptic Interface for Visually Impaired

Language：Japanese  

Input method using divergence eye movement
PC の入力手法として提案されている視線入力は，ディスプレイ上の視点位置をカーソル座標として用いることで手を使わない操作が可能となるが，ボタン等の選択動作が視線移動と区別されにくいという問題が存在する．そこで我々は，開散性眼球運動を計測することで画面奥行き方向への視点移動を検出し，その奥行き方向への移動を選択動作とする手法を提案する．本稿では，ボタン押し込み動作における提案手法の有用性を従来手法と比較した．Gaze input interface offers hands-free operation by using the view point position as the cursor coordinates on the display. However, it has a problem that the selecting operation of the button is undistinguishable from viewing eye movement. We propose a new input method by measuring the divergence eye movement, so that when the users move their viewpoints forward, the button is naturally "pressed". In this paper, we compared this method with conventional method by selection task and evaluated the effectiveness of the proposed method.

Language：Japanese  

Input method using divergence eye movement
PC の入力手法として提案されている視線入力は，ディスプレイ上の視点位置をカーソル座標として用いることで手を使わない操作が可能となるが，ボタン等の選択動作が視線移動と区別されにくいという問題が存在する．そこで我々は，開散性眼球運動を計測することで画面奥行き方向への視点移動を検出し，その奥行き方向への移動を選択動作とする手法を提案する．本稿では，ボタン押し込み動作における提案手法の有用性を従来手法と比較した．Gaze input interface offers hands-free operation by using the view point position as the cursor coordinates on the display. However, it has a problem that the selecting operation of the button is undistinguishable from viewing eye movement. We propose a new input method by measuring the divergence eye movement, so that when the users move their viewpoints forward, the button is naturally "pressed". In this paper, we compared this method with conventional method by selection task and evaluated the effectiveness of the proposed method.

Language：Others  

Language：Japanese  

Language：Japanese  

アクセルペダルへのクリック感付与による操作性向上

Language：Japanese  

電気刺激を用いた滑り感提示における方向特性

Language：Japanese  

視触覚クロスモーダルによる凹凸知覚の鋭敏化

Language：Japanese  

アクセルペダルへのクリック感付与による操作性向上

Language：Japanese  

電気刺激を用いた滑り感提示における方向特性

Language：Japanese  

視触覚クロスモーダルによる凹凸知覚の鋭敏化

Language：Japanese  

1P1-A04 Understanding the Mechanism of Addition of Thermal Sensation to Tactile Stimulation(Tactile and Force Sensing(3))
When the heat stimulation is presented to tip of the index finger and the vibratory stimulation is presented to tip of the middle finger, the middle finger is also perceived to be warm. This phenomenon is known as a kind of the thermal illusion called Thermal Referral. To reveal the mechanism of the Thermal Referral, we focused on tactile mechanoreceptors. We varied the frequencies of vibratory stimulation to stimulate different mechanoreceptors, and we evaluate the mechanoreceptors concerned with Thermal Referral.

Language：Japanese  

触覚刺激提示部位への温度感覚転写現象の解明
When the heat stimulation is presented to tip of the index finger and the vibratory stimulation is presented to tip of the middle finger, the middle finger is also perceived to be warm. This phenomenon is known as a kind of the thermal illusion called Thermal Referral. To reveal the mechanism of the Thermal Referral, we focused on tactile mechanoreceptors. We varied the frequencies of vibratory stimulation to stimulate different mechanoreceptors, and we evaluate the mechanoreceptors concerned with Thermal Referral.

Language：Japanese  

1P1-A04 Understanding the Mechanism of Addition of Thermal Sensation to Tactile Stimulation(Tactile and Force Sensing(3))
When the heat stimulation is presented to tip of the index finger and the vibratory stimulation is presented to tip of the middle finger, the middle finger is also perceived to be warm. This phenomenon is known as a kind of the thermal illusion called Thermal Referral. To reveal the mechanism of the Thermal Referral, we focused on tactile mechanoreceptors. We varied the frequencies of vibratory stimulation to stimulate different mechanoreceptors, and we evaluate the mechanoreceptors concerned with Thermal Referral.

Language：Japanese  

触覚刺激提示部位への温度感覚転写現象の解明

Language：Japanese  

PC作業時の集中力向上のための作業用壁紙

Language：Japanese  

自己の心拍を触覚提示するデバイスの検討

Language：Japanese  

手部への電気刺激を用いたタッチインタフェースのための触力覚提示手法の検討

Language：Japanese  

ソファを介した「隣り合う」遠隔コミュニケーション

Language：Japanese  

PC作業時の集中力向上のための作業用壁紙

Language：Japanese  

自己の心拍を触覚提示するデバイスの検討

Language：Japanese  

手部への電気刺激を用いたタッチインタフェースのための触力覚提示手法の検討

Language：Japanese  

ソファを介した「隣り合う」遠隔コミュニケーション

Language：Japanese  

虫How? 気持ち悪さを提示する触覚ディスプレイ
"mushi-How?"(Ants in the Pants) is a tactile interaction system presenting senses that ants move around on human skin. The tactile display is different with existing display such as vibrlotactile display. Our display presents walking ants that have high speed and low torque hitting nylon line to the skin using compact mortor.

DOI： 10.11487/oukan.2011.0.27.0

Language：Japanese  

前腕皮膚変形による腕動作伝達―前後方向の試作と評価―

Language：Japanese  

ベクション場 歩行者群に作用する誘導力ベクトルの実現

Language：Japanese  

胸部への触覚提示を用いた好意の生起

Language：Japanese  

注意領域への集中力向上を目的とした領域外における視覚刺激

Language：Japanese  

手部触覚による奥行き情報の提示

Language：Japanese  

手部筋肉への機能的電気刺激による指先に対する触覚提示

Language：Japanese  

前腕部体毛の立毛制御による驚き感情の増幅

Language：Japanese  

前腕部への触刺激に対する温度感覚の重畳

Language：Japanese  

前腕皮膚変形による腕動作伝達―前後方向の試作と評価―

Language：Japanese  

胸部への触覚提示を用いた好意の生起

Language：Japanese  

注意領域への集中力向上を目的とした領域外における視覚刺激

Language：Japanese  

手部触覚による奥行き情報の提示

Language：Japanese  

手部筋肉への機能的電気刺激による指先に対する触覚提示

Language：Japanese  

前腕部体毛の立毛制御による驚き感情の増幅

Language：Japanese  

前腕部への触刺激に対する温度感覚の重畳

Language：Japanese  

2A2-O01 Directional Dependency of Fingertip Shear Force and Electrical Stimulation Flow in a Slipping Illusion(Tactile and Force Sensing (1))
When electrical stimulation constantly presents moving pattern to a finger, and shearing force is applied to the finger simultaneously, the participants feel as if their fingers slip though they do not actually move. We named this phenomenon "slipping illusion", and we proposed a pointing-stick-type GUI input device that applied this phenomenon, hoping that owing to the illusion, it can reproduce operation feeling of touchpad where the finger actually moves. In this paper, we investigated the occurrence condition of the slipping illusion focusing on the directional dependency of fingertip shear force and electrical stimulation flow.

Language：Japanese  

2A2-O01 Directional Dependency of Fingertip Shear Force and Electrical Stimulation Flow in a Slipping Illusion(Tactile and Force Sensing (1))
When electrical stimulation constantly presents moving pattern to a finger, and shearing force is applied to the finger simultaneously, the participants feel as if their fingers slip though they do not actually move. We named this phenomenon "slipping illusion", and we proposed a pointing-stick-type GUI input device that applied this phenomenon, hoping that owing to the illusion, it can reproduce operation feeling of touchpad where the finger actually moves. In this paper, we investigated the occurrence condition of the slipping illusion focusing on the directional dependency of fingertip shear force and electrical stimulation flow.

Language：Japanese  

「接吻」に着目した触覚コミューケションデバイス

Language：Japanese  

ペクション場による歩行誘導手法の提案

Language：Japanese  

曲がり角における出会い頭の衝突回避を目的とした周辺視野への接近感提示装置の制作

Language：Japanese  

掌タッチパネル

Language：Japanese  

ペクション場による歩行誘導手法の提案

Language：Japanese  

「接吻」に着目した触覚コミューケションデバイス

Language：Japanese  

曲がり角における出会い頭の衝突回避を目的とした周辺視野への接近感提示装置の制作

Language：Japanese  

掌タッチパネル

Language：Others  

Language：Japanese  

Language：Japanese  

Language：Japanese  

Language：Others  

Language：Others  

Language：Others  

Language：Japanese  

Language：Japanese  

体毛‐毛包受容器構造を模した触覚増強機構

Language：Japanese  

電気触覚ディスプレイを用いた指先への滑り錯覚の提示

Language：Japanese  

歩行誘導における自己運動を用いたベクション場の設計

Language：Japanese  

手掌部への触覚刺激による自己受容感覚拡張デバイス

Language：Japanese  

周辺視野選択的な運動知覚を実現する視覚刺激(第2報)―複数運動提示のためのフロー検討―

Language：Japanese  

出会い頭の衝突回避を目的とした周辺視野への接近感提示

Language：Japanese  

体毛‐毛包受容器構造を模した触覚増強機構

Language：Japanese  

電気触覚ディスプレイを用いた指先への滑り錯覚の提示

Language：Japanese  

歩行誘導における自己運動を用いたベクション場の設計

Language：Japanese  

手掌部への触覚刺激による自己受容感覚拡張デバイス

Language：Japanese  

周辺視野選択的な運動知覚を実現する視覚刺激(第2報)―複数運動提示のためのフロー検討―

Language：Japanese  

出会い頭の衝突回避を目的とした周辺視野への接近感提示

Language：Others  

Language：Others  

Language：Japanese  

空気圧変動による手掌部へのテクスチャ感提示

Language：Japanese  

Language：Japanese  

空気圧変動による手掌部へのテクスチャ感提示

Language：Others  

Language：Japanese  

筋活動の計測を用いた笑いの増幅

Language：Japanese  

筋活動の計測を用いた笑いの増幅

Language：Japanese  

Button Robots Using Horizontal Vibration

Language：Japanese  

Button Robots Using Horizontal Vibration

Language：Japanese  

2008年4月5日から10日の6日間、ACMSIGCHIが主催する国際会議CHI2008(Conference on Human Factor in Computing Systems)が開催された。CHIはHuman-Computer Interactionに関する最高峰の国際会議である。今年は、ルネサンス発祥の地として名高いイタリアのフィレンツェで開催された。フィレンツェは、町の至る所に美術館、教会、石像等があり、また、屋根は赤褐色で統一されており、町全体が一つの美術館のようであった。会場は、「バッソ要塞」(図1)と呼ばれる五角形の大建築物であった。今年の参加登者数は約2300人であった。会議内容の統計は以下通りである。全採択数は582件(全投稿数1969,採択率29.56%)、論文発表は157件(投稿件数714件,採択率22%)、ショートトーク61件(投稿件数341件、採択率18%)であった。なお、全投稿件数はこれまでで最多であった。6日間のうち初めの2日間はプリカンファレンス(Workshops, Doctoral Consortium等)であり、残り4日間がテクニカルプログラムであった。会議初日にはIrene McAra-McWilliam氏によるOpening Plenary、また、最終日には、Bill Boxton氏によるClosing Plenaryが行われた。会議は、毎日朝にその日のセッションの発表者が30秒で自分の発表の広告を行うCHI Madnessというイベントが行われた。その後はPapers/Notes, Case studies、Panel等に加え、デモ展示、企業展示、ポスター発表なども平行して行われた。筆者にとって初めての国際学会であったこともあり、休み時間の間は常にプログラムと睨みあっていた。また、3日目の夜はMicrosoft, Google等のHospitality Events(図2)が行われた。イベント会場内は多くの人で溢れかえっていた。個人的な話で恐縮であるが著者はMicrosoftのイベントでの抽選でZune(80GB)を頂いてしまった。今年は、ベストペーパー7件、ベストノート3件が選ばれた(プログラムの24ページに記載されている。http://www.chi2008.org/program.html) 。

Language：Japanese  

2008年4月5日から10日の6日間、ACMSIGCHIが主催する国際会議CHI2008(Conference on Human Factor in Computing Systems)が開催された。CHIはHuman-Computer Interactionに関する最高峰の国際会議である。今年は、ルネサンス発祥の地として名高いイタリアのフィレンツェで開催された。フィレンツェは、町の至る所に美術館、教会、石像等があり、また、屋根は赤褐色で統一されており、町全体が一つの美術館のようであった。会場は、「バッソ要塞」(図1)と呼ばれる五角形の大建築物であった。今年の参加登者数は約2300人であった。会議内容の統計は以下通りである。全採択数は582件(全投稿数1969,採択率29.56&#37;)、論文発表は157件(投稿件数714件,採択率22&#37;)、ショートトーク61件(投稿件数341件、採択率18&#37;)であった。なお、全投稿件数はこれまでで最多であった。6日間のうち初めの2日間はプリカンファレンス(Workshops, Doctoral Consortium等)であり、残り4日間がテクニカルプログラムであった。会議初日にはIrene McAra-McWilliam氏によるOpening Plenary、また、最終日には、Bill Boxton氏によるClosing Plenaryが行われた。会議は、毎日朝にその日のセッションの発表者が30秒で自分の発表の広告を行うCHI Madnessというイベントが行われた。その後はPapers/Notes, Case studies、Panel等に加え、デモ展示、企業展示、ポスター発表なども平行して行われた。筆者にとって初めての国際学会であったこともあり、休み時間の間は常にプログラムと睨みあっていた。また、3日目の夜はMicrosoft, Google等のHospitality Events(図2)が行われた。イベント会場内は多くの人で溢れかえっていた。個人的な話で恐縮であるが著者はMicrosoftのイベントでの抽選でZune(80GB)を頂いてしまった。今年は、ベストペーパー7件、ベストノート3件が選ばれた(プログラムの24ページに記載されている。http://www.chi2008.org/program.html) 。

Language：Japanese  

2008年4月5日から10日の6日間、ACMSIGCHIが主催する国際会議CHI2008(Conference on Human Factor in Computing Systems)が開催された。CHIはHuman-Computer Interactionに関する最高峰の国際会議である。今年は、ルネサンス発祥の地として名高いイタリアのフィレンツェで開催された。フィレンツェは、町の至る所に美術館、教会、石像等があり、また、屋根は赤褐色で統一されており、町全体が一つの美術館のようであった。会場は、「バッソ要塞」(図1)と呼ばれる五角形の大建築物であった。今年の参加登者数は約2300人であった。会議内容の統計は以下通りである。全採択数は582件(全投稿数1969,採択率29.56%)、論文発表は157件(投稿件数714件,採択率22%)、ショートトーク61件(投稿件数341件、採択率18%)であった。なお、全投稿件数はこれまでで最多であった。6日間のうち初めの2日間はプリカンファレンス(Workshops, Doctoral Consortium等)であり、残り4日間がテクニカルプログラムであった。会議初日にはIrene McAra-McWilliam氏によるOpening Plenary、また、最終日には、Bill Boxton氏によるClosing Plenaryが行われた。会議は、毎日朝にその日のセッションの発表者が30秒で自分の発表の広告を行うCHI Madnessというイベントが行われた。その後はPapers/Notes, Case studies、Panel等に加え、デモ展示、企業展示、ポスター発表なども平行して行われた。筆者にとって初めての国際学会であったこともあり、休み時間の間は常にプログラムと睨みあっていた。また、3日目の夜はMicrosoft, Google等のHospitality Events(図2)が行われた。イベント会場内は多くの人で溢れかえっていた。個人的な話で恐縮であるが著者はMicrosoftのイベントでの抽選でZune(80GB)を頂いてしまった。今年は、ベストペーパー7件、ベストノート3件が選ばれた(プログラムの24ページに記載されている。http://www.chi2008.org/program.html) 。

Language：Japanese  

Group Robots system for desktop interface

Type：Peer review 

researchmap

Type：Competition, symposium, etc. 

Type：Competition, symposium, etc. 

Type：Peer review 

researchmap

Type：Peer review 

researchmap

Type：Academic society, research group, etc. 

Type：Competition, symposium, etc. 

Type：Peer review 

researchmap

Type：Peer review 

Number of peer-reviewed articles in foreign language journals：2

Number of peer-reviewed articles in Japanese journals：4

Proceedings of International Conference Number of peer-reviewed papers：2

Type：Competition, symposium, etc. 

Type：Academic society, research group, etc. 

researchmap

Type：Academic society, research group, etc. 

researchmap

Type：Academic society, research group, etc.