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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/32906

Title: Dealing with the effects of sensor displacement in wearable activity recognition
Authors: Baños Legrán, Oresti
Attila Toth, Mate
Damas Hermoso, Miguel
Pomares Cintas, Héctor
Rojas Ruiz, Ignacio
Issue Date: 2014
Abstract: Most wearable activity recognition systems assume a predefined sensor deployment that remains unchanged during runtime. However, this assumption does not reflect real-life conditions. During the normal use of such systems, users may place the sensors in a position different from the predefined sensor placement. Also, sensors may move from their original location to a different one, due to a loose attachment. Activity recognition systems trained on activity patterns characteristic of a given sensor deployment may likely fail due to sensor displacements. In this work, we innovatively explore the effects of sensor displacement induced by both the intentional misplacement of sensors and self-placement by the user. The effects of sensor displacement are analyzed for standard activity recognition techniques, as well as for an alternate robust sensor fusion method proposed in a previous work. While classical recognition models show little tolerance to sensor displacement, the proposed method is proven to have notable capabilities to assimilate the changes introduced in the sensor position due to self-placement and provides considerable improvements for large misplacements.
Sponsorship: This work was supported by the High Performance Computing (HPC)-Europa2 project funded by the European Commission-DG Research in the Seventh Framework Programme under grant agreement No. 228398 and by the EU Marie Curie Network iCareNet under grant No. 264738. This work was also supported by the Spanish Comision Interministerial de Ciencia y Tecnologia (CICYT) Project SAF2010-20558, Junta de Andalucia Project P09-TIC-175476 and the FPU Spanish grant, AP2009-2244.
Publisher: MDPI
Keywords: Activity recognition
Sensor displacement
Wearable sensors
Inertial sensing
Sensor fusion
Human behavior inference
URI: http://hdl.handle.net/10481/32906
ISSN: 1424-8220
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Baños, O.; et al. Dealing with the effects of sensor displacement in wearable activity recognition. Sensors, 14(6): 9995-10023 (2014). [http://hdl.handle.net/10481/32906]
Appears in Collections:OpenAIRE (Open Access Infrastructure for Research in Europe)
DATC - Artículos

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