Session:「Augmenting Augmented Reality」

iTurk: Turning Passive Haptics into Active Haptics by Making Users Reconfigure Props in Virtual Reality

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3173663

論文アブストラクト: We present a system that complements virtual reality experiences with passive props, yet still allows modifying the virtual world at runtime. The main contribution of our system is that it does not require any actuators; instead, our system employs the user to reconfigure and actuate otherwise passive props. We demonstrate a foldable prop that users reconfigure to represent a suitcase, fuse cabinet, railing, and a seat. A second prop, suspended from a long pendulum, not only stands in for inanimate objects, but also for objects that move and demonstrate proactive behavior, such as a group of flying droids that physically attack the user. Our approach conveys a sense of a living, animate world, when in reality the user is the only animate entity present in the system, complemented with only one or two physical props. In our study, participants rated their experience as more enjoyable and realistic than a corresponding no-haptics condition.

日本語のまとめ:

VRにおいて折りたたみ式の板と振り子を用いて,多様な状況における触覚を提示した.アクチュエータが無くとも,ユーザ自身のVR中の行動によりこれらの物体を動かすことで,触覚が無いときよりも現実感ある体験を創造した.

Understanding Users' Capability to Transfer Information between Mixed and Virtual Reality: Position Estimation across Modalities and Perspectives

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3173937

論文アブストラクト: Mixed Reality systems combine physical and digital worlds, with great potential for the future of HCI. It is possible to design systems that support flexible degrees of virtuality by combining complementary technologies. In order for such systems to succeed, users must be able to create unified mental models out of heterogeneous representations. In this paper, we present two studies focusing on the users' accuracy on heterogeneous systems using Spatial Augmented Reality (SAR) and immersive Virtual Reality (VR) displays, and combining viewpoints (egocentric and exocentric). The results show robust estimation capabilities across conditions and viewpoints.

日本語のまとめ:

SAR/VRで提示した物体位置をVR/SARで正しく指せるか検証し,現実とVR間で統一されたメンタルモデルを会得可能だと示した.またVRにおいて1人称視点ではない視点を提示しても, 正しく両者の情報を組み合わせられた.

Two Kinds of Novel Multi-user Immersive Display Systems

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3174173

論文アブストラクト: Stereoscopic display is a standard display mode for virtual reality environments. Typical 3D projection provides only a single stereoscopic video stream; thus co-located users cannot correctly perceive the virtual scene based on their own position and view. Several works devoted to developing multi-user stereoscopic display, but the number of users is very limited or the technical implementation is complicated. In this paper we put forward two flexible and simple projection-based multi-user stereoscopic display systems. The first one, named TPA, is based on a triple-projector array and provides a 120Hz active stereo for three users. Two TPAs can be combined to form a six-user system. The second one, named DPA, is a dual-projector and easy-implemented system providing individual stereoscopic video stream for two to six users. Finally, a co-located multi-user virtual fireman simulation training system and a virtual tennis simulation system were created to verify the effectiveness of our systems.

日本語のまとめ:

同時に複数人へ立体映像を示すシステムを提案した.1つはカラーホイールを付け替えた3つのプロジェクタとシャッターゴーグルで3人に120Hz映像を,もう1つは2つのプロジェクタとシャッターゴーグルで2-6人に映像を提示する.

Whiskers: Exploring the Use of Ultrasonic Haptic Cues on the Face

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3174232

論文アブストラクト: Haptic cues are a valuable feedback mechanism for smart glasses. Prior work has shown how they can support navigation, deliver notifications and cue targets. However, a focus on actuation technologies such as mechanical tactors or fans has restricted the scope of research to a small number of cues presented at fixed locations. To move beyond this limitation, we explore perception of in-air ultrasonic haptic cues on the face. We present two studies examining the fundamental properties of localization, duration and movement perception on three facial sites suitable for use with glasses: the cheek, the center of the forehead, and above the eyebrow. The center of the forehead led to optimal performance with a localization error of 3.77mm and accurate duration (80%) and movement perception (87%). We apply these findings in a study delivering eight different ultrasonic notifications and report mean recognition rates of up to 92.4% (peak: 98.6%). We close with design recommendations for ultrasonic haptic cues on the face.

日本語のまとめ:

位置が固定/可変の超音波を顔の頬・鼻梁・眉の上に当てたところ,鼻梁に当てたときが最も精度よく認識された.さらに車の運転案内という具体的状況での触覚による情報提示にこれを用いたところ,正答率が92.4%と高かった.