Active Spaces：活动空间.pptVIP

Roy H. Campbell (rhc@cs.uiuc.edu) Active Spaces Roy H. Campbell rhc@cs.uiuc.edu Computer Science Department University of Illinois at Urbana-Champaign  Introduction A standard definition for an Active Space does not exist, but it is evolving. There are different approaches regarding functionality required and implementation details. Overview Georgia Tech, Microsoft: Emerging perspectives University of Illinois: Scale Software Infrastructure Berkeley, M.I.T., Washington: Comparison Active Spaces Properties Some common requirements: Location Detection Contextual Model Autonomous and Responsive Behavior Correlation of Heterogeneous Input Interaction Mechanism Example Implementations Classroom 2000. Georgia Tech Goal: Preservation and augmentation of electronic notes taken by students and teachers. Attach and synchronize audio, video and annotations to class notes Example Implementations Classroom 2000. Georgia Tech The architectural scheme must be able to evolve with time. ? Scheme phases: Preproduction: Automate tasks to begin class Live Capture: Record and timestamp all events associated to class. Postproduction: Support development of interfaces to integrate and associate related streams. Access: Provide a universal access method (WEB) Example Implementations Classroom 2000. Georgia Tech First implementation: Useful as an experimentation prototype. Equipment and software not good enough. Lessons learned were applied to the next implementation. Example Implementations Classroom 2000. Georgia Tech Living Laboratory Completely equipped classroom that hosted several courses Improved software that allowed better media integration. Software infrastructure did not require as much attention from users as in previous implementation (invisibility required by ubiquitous computing) Example Implementations Classroom 2000. Georgia Tech Their conclusions: There should be a motivating application. Built system should address some notion of scale: Physica