Automatic orchestration of video streams to enhance group communication
Proceedings of the 2012 international workshop on Socially-aware multimedia
The utility of social and topical factors in anticipating repliers in Twitter conversations
Proceedings of the 5th Annual ACM Web Science Conference
Towards a format-agnostic approach for production, delivery and rendering of immersive media
Proceedings of the 4th ACM Multimedia Systems Conference
Orchestration: tv-like mixing grammars applied to video-communication for social groups
Proceedings of the 21st ACM international conference on Multimedia
Virtual director technology for social video communication and live event broadcast production
Proceedings of the 21st ACM international conference on Multimedia
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Audiovisual group communication systems deal with a large number of video streams, and, unlike less advanced videoconferencing systems, require intelligence for selecting adequate views for each of the connected rooms, in order to convey best what is happening in the other locations. Such a decision making component, in our implementation called Orchestration Engine (OE), acts as a Virtual Director. It processes low level events, emitted by content analysis sensors, into editing commands. The OE has two main components: one that semantically lifts low-level events into communication events and one that associates editing decisions to communication contexts. The former has to deal with uncertain and delayed information. The latter subsumes knowledge that reflects both conversation and narrative principles. Both components include contradicting bodies of knowledge. We investigate a rule-based event processing approach and reflect the scalability of our solution regarding competing and contradicting rules.