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This paper illustrates the development of the roomXT system, a mixed reality communication system for the home domain. RoomXT virtually extends a user's physical environment by providing a "life-like" communication channel for informal and spontaneous interactions. We use a wall-sized display together with head-tracking and 3D rendering to achieve visual contiguity between the real and a virtual environment. As one possible application of this system, we set up a remote dining situation for two users. The dinner table is visually extended into the virtual environment in which a live video stream of the dining partner is shown. Great care was taken in regard to the aesthetic and device-free integration into the living room. First impressions of potential users support the validity of our design decisions.

This paper gives an overview of how the role of architecture, design, and HCI is to be redefined in a world of ubiquitous computing and the recent advances in display technology. It describes the future care lab and our take on research in this field. We elaborate on how wall-sized displays can form an integral part of an ambient intelligence space that aims to assist the elderly and empower them to stay longer in their familiar surroundings before moving into nursing homes. We propose a classification of different concepts that virtually extend a real environment and describe some possible scenarios.

Abstract:The current wave of attempts to create virtual design studios has demonstrated a wide range of didactical as well as computational models. Through work performed over the past year, an evolution of many of these concepts has been created which fosters a sense of place. This aspect of place has to do with identity and community rather than with form and space. Initial virtual design studio projects were often merely a digital pin-up board, which enabled distributed and asynchronous criticism and review. However, the web sites were more analogous to a directory than to the studio setting of an upper level design problem. The establishment of a truly distributed design studio in the past year, which involved design teams spread over three universities (not parallel to one another) led to the need for an independent place to share and discuss the student's work. Previous virtual design studios have also established web sites with communication facilities, but one was always alone with the information. In order to enhance this virtual design studio and to give it a sense of place, a studio platform that serves as a console for participants was developed. The console is a front end to a dynamic database which mediates information about the participants, their work, timetables and changes to the dynamic community. Through a logon mechanism, the presence of members is traceable and displayed. When a member logs onto the console, other members currently online are displayed to the participant. An online embedded talk function allows informal impromptu discussions to occur at a mouseclick, thus imitating ways similar to the traditional design studio setting. Personal profiles and consultation scheduling constitute the core services available. Use of the platform has proven to be well above expected levels. The students often used the platform as a meeting place to see what was going on and to co-ordinate further discussions using other forums (videoconferences, irc chats or simple telephone conversations. Surveys taken at the end of the semester show a strong affinity for the platform concept in conjunction with a general frustration in pursuing collaboration with low bandwidth communication channels.

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