Communication Behaviors In Colocated Collaborative AR Interfaces

Lecture Notes in Computer Science, 2005

Conventional interaction in large screen projection-based display systems only allows a "master user" to have full control over the application. We have developed the VRGEO Demonstrator application based on an interaction paradigm that allows multiple users to share large projection-based environment displays for co-located collaboration. Following SDG systems we introduce a collaborative interface based on tracked PDAs and integrate common device metaphors into the interface to improve user's learning experience of the virtual environment system. The introduction of multiple workspaces in a virtual environment allows users to spread out data for analysis making use of the large screen space more effectively. Two extended informal evaluation sessions with application domain experts and demonstrations of the system show that our collaborative interaction paradigm improves the learning experience and interactivity of the virtual environment.

arXiv (Cornell University), 2019

Face-to-face telepresence promotes the sense of "being there" and can improve collaboration by allowing immediate understanding of remote people's nonverbal cues. Several approaches successfully explored interactions with 2D content using a see-through whiteboard metaphor. However, with 3D content there is a decrease in awareness due to ambiguities originated by participants' opposing points-of-view. In this paper we investigate how people and content should be presented for discussing 3D renderings within face-to-face collaborative sessions. To this end, we performed a user evaluation to compare four different conditions, in which we varied reflections of both workspace and remote people representation. Results suggest potentially more benefits to remote collaboration from workspace consistency rather than people's representation fidelity. We contribute a novel design space, the Negative Space, for remote face-to-face collaboration focusing on 3D content.

Interactive Artifacts and Furniture Supporting Collaborative Work and Learning, 2008

Design of augmented furniture should address interaction with and between people, as devices that simply satisfy technical requirements are not enough. Often, good practice does not emerge spontaneously, and this is especially true in activities which require some extra individual effort to bring a collective benefit. Then the artefacts themselves should be the catalysts for good practice.

Proceedings of the eighth …, 2003

Simon Fraser University …, 2001

Multimedia and Expo, …, 2000

In the Shared Space project, we explore, innovate, design and evaluate future computing environments that will radically enhance interaction between human and computers as well as interaction between humans mediated by computers. In particular, we investigate how augmented reality enhanced by physical and spatial 3D user interfaces can be used to develop effective face-toface collaborative computing environments. How will we interact in such collaborative spaces? How will we interact with each other? What new applications can be developed using this technology? These are the questions that we are trying to answer in research on Shared Space. This paper provides a short overview of Shared Space, its directions, technologies and applications.

ACM Transactions on Computer-human Interaction, 2000

This paper explores and evaluates the support for object-focused collaboration provided by a desktop Collaborative Virtual Environment. An experimental 'design' task was conducted and video recordings of the participants' activities facilitated an observational analysis of interaction in, and through, the virtual world. Observations include: problems due to 'fragmented' views of embodiments in relation to shared objects; participants compensating with spoken accounts of their actions; and difficulties in understanding others' perspectives. Implications and proposals for the design of CVEs drawn from these observations: the use of semi-distorted views to support peripheral awareness; representations of actions and pseudo-humanoid embodiments; and navigation techniques that are sensitive to the actions of others. The paper also presents some examples of the ways in which these proposals might be realised.

2015

This paper describes Manufaktur, a prototype of a concept and infrastructure that goes beyond the classical CVE sys-tems toward a collaborative augmented reality environ-ment, where users ' documents and objects appear as live representations in a 3D workspace. Manufaktur supports collaborative, distributed work across platforms. It provides the possibility of display on the MS Windows and the SGI IRIX platforms with mono and stereographic displays rang-ing from a monitor built into a table to a Holobench. The emphasis is on representing the materials with which people are working, and the actions they are taking with them, and far less on the visual representation, e.g. through avatars, of the collaborating persons. It seeks to facilitate users ’ collective self-organisation of environments, spaces and traces that embody the trajectory of their work.

Virtual Reality, 1999

In this paper, we present a three-dimensional user interface for synchronous co-operative work, Spin, which has been designed for multi-user synchronous real-time applications to be used in, for example, meetings and learning situations. Spin is based on a new metaphor of virtual workspace. We have designed an interface, for an office environment, which recreates the three-dimensional elements needed during a meeting and increases the user's scope of interaction. In order to accomplish these objectives, animation and three-dimensional interaction in real time are used to enhance the feeling of collaboration within the three-dimensional workspace. Spin is designed to maintain a maximum amount of information visible. The workspace is created using artificial geometry — as opposed to true three-dimensional geometry — and spatial distortion, a technique that allows all documents and information to be displayed simultaneously while centring the user's focus of attention. Users interact with each other via their respective clones, which are three-dimensional representations displayed in each user's interface, and are animated with user action on shared documents. An appropriate object manipulation system (direct manipulation, 3D devices and specific interaction metaphors) is used to point out and manipulate 3D documents.