Monitoring Chewing and Eating in Free-Living Using Smart Eyeglasses

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Zhang R, Amft O
Zeitschrift: IEEE Journal of Biomedical and Health Informatics
Jahr der Veröffentlichung: 2018
Band: 22
Heftnummer: 1
Seitenbereich: 23-32
ISSN: 2168-2194


We propose to 3-D-print personal fitted regular-look smart eyeglasses frames equipped with bilateral electromyography recording to monitor temporalis muscles' activity for automatic dietary monitoring. Personal fitting supported electrode-skin contacts are at temple ear bend and temple end positions. We evaluated the smart monitoring eyeglasses during in-lab and free-living studies of food chewing and eating event detection with ten participants. The in-lab study was designed to explore three natural food hardness levels and determine parameters of an energy-based chewing cycle detection. Our free-living study investigated whether chewing monitoring and eating event detection using smart eyeglasses is feasible in free-living. An eating event detection algorithm was developed to determine intake activities based on the estimated chewing rate. Results showed an average food hardness classification accuracy of 94% and chewing cycle detection precision and recall above 90% for the in-lab study and above 77% for the free-living study covering 122 hours of recordings. Eating detection revealed the 44 eating events with an average accuracy above 95%. We conclude that smart eyeglasses are suitable for monitoring chewing and eating events in free-living and even could provide further insights into the wearer's natural chewing patterns.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Amft, Oliver Prof. Dr.
Lehrstuhl für Digital Health

Einrichtungen weiterer Autorinnen und Autoren

Universität Passau


Zhang, R., & Amft, O. (2018). Monitoring Chewing and Eating in Free-Living Using Smart Eyeglasses. IEEE Journal of Biomedical and Health Informatics, 22(1), 23-32.

Zhang, Rui, and Oliver Amft. "Monitoring Chewing and Eating in Free-Living Using Smart Eyeglasses." IEEE Journal of Biomedical and Health Informatics 22.1 (2018): 23-32.


Zuletzt aktualisiert 2019-25-03 um 09:08