Context and consciousness: activity theory and human-computer interaction
Context and consciousness: activity theory and human-computer interaction
Personal and Ubiquitous Computing
Activity and Location Recognition Using Wearable Sensors
IEEE Pervasive Computing
Inferring Activities from Interactions with Objects
IEEE Pervasive Computing
Fine-Grained Activity Recognition by Aggregating Abstract Object Usage
ISWC '05 Proceedings of the Ninth IEEE International Symposium on Wearable Computers
Wearable Hand Activity Recognition for Event Summarization
ISWC '05 Proceedings of the Ninth IEEE International Symposium on Wearable Computers
Activity Recognition of Assembly Tasks Using Body-Worn Microphones and Accelerometers
IEEE Transactions on Pattern Analysis and Machine Intelligence
A hybrid discriminative/generative approach for modeling human activities
IJCAI'05 Proceedings of the 19th international joint conference on Artificial intelligence
Bathroom activity monitoring based on sound
PERVASIVE'05 Proceedings of the Third international conference on Pervasive Computing
Colosseum3D: authoring framework for virtual environments
EGVE'05 Proceedings of the 11th Eurographics conference on Virtual Environments
Activity recognition using an egocentric perspective of everyday objects
UIC'07 Proceedings of the 4th international conference on Ubiquitous Intelligence and Computing
Office activity recognition using hand posture cues
BCS-HCI '08 Proceedings of the 22nd British HCI Group Annual Conference on People and Computers: Culture, Creativity, Interaction - Volume 2
An activity-centered wearable computing infrastructure for intelligent environment applications
EUC'07 Proceedings of the 2007 international conference on Embedded and ubiquitous computing
The easy ADL home: A physical-virtual approach to domestic living
Journal of Ambient Intelligence and Smart Environments
Towards a model for egocentric interaction with physical and virtual objects
Proceedings of the 6th Nordic Conference on Human-Computer Interaction: Extending Boundaries
Object interaction detection using hand posture cues in an office setting
International Journal of Human-Computer Studies
Egocentric interaction as a tool for designing ambient ecologies-The case of the easy ADL ecology
Pervasive and Mobile Computing
Modeling actions based on a situative space model for recognizing human activities
AIMSA'12 Proceedings of the 15th international conference on Artificial Intelligence: methodology, systems, and applications
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Recognizing activities based on an actor's interaction with everyday objects is an important research approach within ubiquitous computing. We present a recognition approach which complement objects grabbed or released information with the object's internal state changes (as an effect of intra manipulation) and the object's external state changes with reference to other objects (as an effect of extra manipulation). The concept of Intra manipulation is inspired by the fact that many everyday objects change their internal state when manipulated by the human actor, while extra manipulation is motivated by the fact that humans commonly rearrange the spatial relations between everyday objects as part of their activities. A detailed evaluation of our prototype activity recognition system in virtual reality (VR) environment is presented as a "proof of concept". We have obtained a recognition precision of 92% on the activity-level and 81% on the action-level among 15 everyday home activities. Virtual reality was used as a test-bed in order to speed up the design process of our activity recognition system, allowing us to compensate for the limitations with currently available sensing technologies and to compare the contributions of intra manipulation and extra manipulation for activity recognition.