Detecting Eating Episodes by Tracking Jawbone Movements with a Non-Contact Wearable Sensor

Author:

Chun Keum San1,Bhattacharya Sarnab1,Thomaz Edison1

Affiliation:

1. University of Texas at Austin, Austin, Texas, USA

Abstract

Eating is one of the most fundamental human activities, and because of the important role it plays in our lives, it has been extensively studied. However, an objective and usable method for dietary intake tracking remains unrealized despite numerous efforts by researchers over the last decade. In this work, we present a new wearable computing approach for detecting eating episodes. Using a novel multimodal sensing strategy combining accelerometer and range sensing, the approach centers on a discreet and lightweight instrumented necklace that captures head and jawbone movements without direct contact with the skin. An evaluation of the system with 32 participants comprised of three phases resulted in eating episodes detected with 95.2% precision and 81.9% recall in controlled studies and 78.2% precision and 72.5% recall in the free-living study. This research add technical contributions to the fields of wearable computing, human activity recognition, and mobile health.

Publisher

Association for Computing Machinery (ACM)

Subject

Computer Networks and Communications,Hardware and Architecture,Human-Computer Interaction

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