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EUROSSC
2009
Springer

Automatic Event-Based Synchronization of Multimodal Data Streams from Wearable and Ambient Sensors

13 years 10 months ago
Automatic Event-Based Synchronization of Multimodal Data Streams from Wearable and Ambient Sensors
A major challenge in using multi-modal, distributed sensor systems for activity recognition is to maintain a temporal synchronization between individually recorded data streams. A common approach is to use well defined ‘synchronization actions’ performed by the user to generate, easily identifiable pattern events in all recorded data streams. The events are then used to manually align data streams. This paper proposes an automatic method for this synchronization. We demonstrate that synchronization actions can be automatically identified and used for stream synchronization across widely different sensors such as acceleration, sound, force, and a motion tracking system. We describe fundamental properties and bounds of our event-based synchronization approach. In particular, we show that the event timing relation is transitive for sensor groups with shared members. We analyzed our synchronization approach in three studies. For a large dataset of 5 users and totally 308 data strea...
David Bannach, Oliver Amft, Paul Lukowicz
Added 26 May 2010
Updated 26 May 2010
Type Conference
Year 2009
Where EUROSSC
Authors David Bannach, Oliver Amft, Paul Lukowicz
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