Session:「Video Communications」

Mini-Me: An Adaptive Avatar for Mixed Reality Remote Collaboration

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3173620

論文アブストラクト: We present Mini-Me, an adaptive avatar for enhancing Mixed Reality (MR) remote collaboration between a local Augmented Reality (AR) user and a remote Virtual Reality (VR) user. The Mini-Me avatar represents the VR user's gaze direction and body gestures while it transforms in size and orientation to stay within the AR user's field of view. A user study was conducted to evaluate Mini-Me in two collaborative scenarios: an asymmetric remote expert in VR assisting a local worker in AR, and a symmetric collaboration in urban planning. We found that the presence of the Mini-Me significantly improved Social Presence and the overall experience of MR collaboration.

日本語のまとめ:

ARユーザと離れたVRユーザの協働のためのMRシステムを開発した。VRユーザの視線方向やジェスチャを方向を保ったまま小さくして、ARユーザの視界に表示した。対称・非対称の2シナリオで評価し、社会的存在感が向上したことがわかった。

Perspective on and Re-orientation of Physical Proxies in Object-Focused Remote Collaboration

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3173855

論文アブストラクト: Remote collaborators working together on physical objects have difficulty building a shared understanding of what each person is talking about. Conventional video chat systems are insufficient for many situations because they present a single view of the object in a flattened image. To understand how this limited perspective affects collaboration, we designed the Remote Manipulator (ReMa), which can reproduce orientation manipulations on a proxy object at a remote site. We conducted two studies with ReMa, with two main findings. First, a shared perspective is more effective and preferred compared to the opposing perspective offered by conventional video chat systems. Second, the physical proxy and video chat complement one another in a combined system: people used the physical proxy to understand objects, and used video chat to perform gestures and confirm remote actions.

日本語のまとめ:

現行のビデオ通話は視点が限られ困難が多い。遠隔地でオブジェクトの方向を再現するシステムを作った。まず、対面型の視界よりも、同じ方向からオブジェクトをみる視界の方が効率的とわかった。さらに、代理オブジェクトとビデオ通話が相補的に働いた。

Geocaching with a Beam: Shared Outdoor Activities through a Telepresence Robot with 360 Degree Viewing

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3173933

論文アブストラクト: People often enjoy sharing outdoor activities together such as walking and hiking. However, when family and friends are separated by distance it can be difficult if not impossible to share such activities. We explore this design space by investigating the benefits and challenges of using a telepresence robot to support outdoor leisure activities. In our study, participants participated in the outdoor activity of geocaching where one person geocached with the help of a remote partner via a telepresence robot. We compared a wide field of view (WFOV) camera to a 360° camera. Results show the benefits of having a physical embodiment and a sense of immersion with the 360° view. Yet challenges related to a lack of environmental awareness, safety issues, and privacy concerns resulting from bystander interactions. These findings illustrate the need to design telepresence robots with the environment and public in mind to provide an enhanced sensory experience while balancing safety and privacy issues resulting from being amongst the general public.

日本語のまとめ:

屋外でのテレプレゼンスロボット使用のため, Beamロボットを用いた2人ペアでの宝探しを行わせ, ユーザ評価を行った。屋外特有の環境把握が困難であることや、ロボットの安全性やプライバシー, 周辺状況の把握能力も考慮すべきだ。

The Benefits and Challenges of Video Calling for Emergency Situations

論文URL: http://dl.acm.org/citation.cfm?doid=3173574.3174231

論文アブストラクト: In the coming years, emergency calling services in North America will begin to incorporate new modalities for reporting emergencies, including video-based calling. The challenge is that we know little of how video calling systems should be designed and what benefits or challenges video calling might bring. We conducted observations and contextual interviews within three emergency response call centres to investigate these points. We focused on the work practices of call takers and dispatchers. Results show that video calls could provide valuable contextual information about a situation and help to overcome call taker challenges with information ambiguity, location, deceit, and communication issues. Yet video calls have the potential to introduce issues around control, information overload, and privacy if systems are not designed well. These results point to the need to think about emergency video calling along a continuum of visual modalities ranging from audio calls accompanied with images or video clips to one-way video streams to two-way video streams where camera control and camera work need to be carefully designed.

日本語のまとめ:

北米におけるエマージェンシーコール(911)時のビデオ通話機能の導入のため, コールセンターにおける行動観察を通じてその設計を探る。シチュエーション把握やリスク回避に有用な一方、システムへの依存やプライバシー問題が存在する。