Jefferson Pardomuan

Bio: Jefferson Pardomuan is an academic researcher from University of Electro-Communications. The author has contributed to research in topics: Computer science & Modular design. The author has an hindex of 1, co-authored 2 publications receiving 14 citations.

ClaytricSurface: An Interactive Deformable Display with Dynamic Stiffness Control

Abstract: ClaytricSurface is a shape-changeable display with dynamic stiffness control. The prototype uses vacuum pressure control on an enclosed volume of particles. Users can mold 3D shapes and apply textures to them while experiencing tactile feedback through dynamically changing stiffness. The system's developers have added both touch input using a depth camera and peripheral devices to expand the system's practical application. They also developed applications in the form of design tools that have great entertainment potential.

LUNAChair: Remote Wheelchair System that Links Up a Remote Caregiver and Wheelchair Surroundings

Abstract: We introduce LUNAChair, a remote control and communication system that uses omnidirectional video to connect a remote caregiver to a wheelchair user and a third person around the wheelchair. With the recent growing need for wheelchairs, much of the wheelchair research has focused on wheelchair control, such as fully automatic driving and remote operation. For wheelchair users, conversations with caregivers and third persons around them are also important. Therefore, we propose a system that connects a wheelchair user and a remote caregiver using omnidirectional cameras, which allows the remote caregiver to control the wheelchair while observing both the wheelchair user and his/her surroundings. Moreover, the system facilitates communication by using gaze and hand pointing estimation from an omnidirectional video.

ASTRE: Prototyping Technique for Modular Soft Robots With Variable Stiffness

Abstract: Soft robots are advantageous for human interaction owing to their adaptability and safe interactivity. However, research on soft robots is challenging because of the complex fabrication process of elastomeric materials with multiple channels. In this study, we introduce a prototyping technique for the fabrication-friendly soft robots using pneumatic artificial muscle(PAMs) and modular 3D printed reinforcement. We presented three primitive deformation structures: bending, twisting, and contraction. Moreover, we propose a novel variable stiffness technique that alters PAMs contraction and radial expansion behavior into locking, malleable, and rotational brake features. We explore both the parallel and series arrangement of the reinforcement module and propose new types of mixing configurations and scaling techniques. We quantitatively verified the force scaling technique on different types of features. We demonstrate the feasibility of this prototyping technique through six application examples and conclude with a discussion of the limitations and possible future improvements.

LivingClay: particle actuation to control display volume and stiffness

Abstract: We present a new type of display actuation that is able to control both display geometry and stiffness properties using a filler material and air flow control technique. The display consists of a flat, flexible layer of cells on the surface and chamber filled with particles under it. Display geometries can be changed by transporting an amount of particles between display cells and the particle chamber using pressured air and vacuum to control the air flows. This system also allow for variable stiffness using vacuum technique to harden the particles inside chamber. In this paper, we present the design and control technique of this new type actuator and also possible interaction on a single actuator display. We also propose a low-cost, effective way to control an array of actuators where the air flow line and particle line are arranged in a multiplexed grid configuration.

FroggyHand: A Gesture Based Control System for Omni-Directional Projections

Abstract: We would like to introduce FroggyHand, a novel interactive display which projects images onto a webbed skin between the user’s fingers. Applications connected to these images are then activated via hand tracking and gesture recognition. We present the implementation steps as well as small, prototype applications and discuss future plans.

Analysis and Classification of Shape-Changing Interfaces for Design and Application-based Research

Abstract: Shape-changing interfaces are physically tangible, interactive devices, surfaces, or spaces that allow for rich, organic, and novel experiences with computational devices. Over the last 15 years, research has produced functional prototypes over many use applications; reviews have identified themes and possible future directions but have not yet looked at possible design or application-based research. Here, we gather this information together to provide a reference for designers and researchers wishing to build upon existing prototyping work, using synthesis and discussion of existing shape-changing interface reviews and comprehensive analysis and classification of 84 shape-changing interfaces. Eight categories of prototype are identified alongside recommendations for the field.

A Public Ideation of Shape-Changing Applications

Abstract: The shape-changing concept where objects reconfigure their physical geometry has the potential to transform our interactions with computing devices, displays and everyday artifacts. Their dynamic physicality capitalizes on our inherent tactile sense and facilitates object re-appropriation. Research both within and outside HCI continues to develop a diverse range of technological solutions and materials to enable shape-change. However, as an early-stage enabling technology, the community has yet to identify important applications and use-cases to fully exploit its value. To expose and document a range of applications for shape-change, we employed unstructured brainstorming within a public engagement study. A 74-participant brainstorming exercise with members of the public produced 336 individual ideas that were coded into 11 major themes: entertainment, augmented living, medical, tools & utensils, research, architecture, infrastructure, industry, wearables, and education & training. This work documents the methodology and resultant application ideas along with reflections on the approach for gathering application ideas to enable shape-changing interactive surfaces and objects.

Non-Rigid HCI: A Review of Deformable Interfaces and Input

Abstract: Deformable interfaces are emerging in HCI and prototypes show potential for non-rigid interactions. Previous reviews looked at deformation as a material property of shape-changing interfaces and concentrated on output. As such,deformable input was under-discussed. We distinguish deformable from shape-changing interfaces to concentrate on input. We survey 131 papers on deformable interfaces and review their key design elements (e.g., shape, material) based on how they support input. Our survey shows that deformable input was often used to augment or replace rigid input, particularly on elastic and flexible displays. However, when shapes and materials guide interactions, deformable input was used to explore new HCI paradigms, where gestures are potentially endless, and input become analogy to sculpting, metaphor to non-verbal communication, and expressive controls are enhanced. Our review provides designers and practitioners with a baseline for designing deformable interfaces and input methodically. We conclude by highlighting under-explored areas and identify research goals to tackle in future work with deformable interfaces.

Cito: An Actuated Smartwatch for Extended Interactions

Abstract: We propose and explore actuating a smartwatch face to enable extended interactions. Five face movements are defined: rotation, hinging, translation, rising, and orbiting. These movements are incorporated into interaction techniques to address limitations of a fixed watch face. A 20-person study uses concept videos of a passive low fidelity prototype to confirm the usefulness of the actuated interaction techniques. A second 20-person study uses 3D rendered animations to access social acceptability and perceived comfort for different actuation dynamics and usage contexts. Finally, we present Cito, a high-fidelity proof-of-concept hardware prototype that investigates technical challenges.

Using Design Fiction to Inform Shape-Changing Interface Design and Use

Abstract: Shape-changing interfaces are tangible, physically dynamic devices which enable user-experience beyond 2D screens. Within Human Computer Interaction, researchers are developing these from low-resolution, low-fidelity prototypes, toward a vision of a truly malleable world. The main focus is in producing and testing hardware, and basic user interactions, which leaves the question unanswered: what are shape-changing interfaces good for? In response, we propose the use of design fiction to investigate potential applications for this technology: to create and analyse artifacts relating to future use-scenarios for shape-change. Whilst research within shape-change often proposes future use-cases for prototypes during discussion, they are seldom in a form that presents them as everyday artifacts. Here, we present and discuss a printed game-play instruction manual for a truly high resolution shape-changing game entitled First Hand, which aims to draw parallels between current gaming practices and the tangible nature of shape-changing interfaces.