Title
Wearable-Based Affect Recognition - A Review.
Abstract
Affect recognition is an interdisciplinary research field bringing together researchers from natural and social sciences. Affect recognition research aims to detect the affective state of a person based on observables, with the goal to, for example, provide reasoning for the person's decision making or to support mental wellbeing (e.g., stress monitoring). Recently, beside of approaches based on audio, visual or text information, solutions relying on wearable sensors as observables, recording mainly physiological and inertial parameters, have received increasing attention. Wearable systems enable an ideal platform for long-term affect recognition applications due to their rich functionality and form factor, while providing valuable insights during everyday life through integrated sensors. However, existing literature surveys lack a comprehensive overview of state-of-the-art research in wearable-based affect recognition. Therefore, the aim of this paper is to provide a broad overview and in-depth understanding of the theoretical background, methods and best practices of wearable affect and stress recognition. Following a summary of different psychological models, we detail the influence of affective states on the human physiology and the sensors commonly employed to measure physiological changes. Then, we outline lab protocols eliciting affective states and provide guidelines for ground truth generation in field studies. We also describe the standard data processing chain and review common approaches related to the preprocessing, feature extraction and classification steps. By providing a comprehensive summary of the state-of-the-art and guidelines to various aspects, we would like to enable other researchers in the field to conduct and evaluate user studies and develop wearable systems.
Year
DOI
Venue
2019
10.3390/s19194079
SENSORS
Keywords
Field
DocType
review,affective computing,affect recognition,wearables,data collection,physiological signals,machine learning,physiological features,sensors
Data collection,Everyday life,Data processing,Best practice,Wearable computer,Feature extraction,Electronic engineering,Human–computer interaction,Engineering,Affective computing,Affect (psychology)
Journal
Volume
Issue
ISSN
19
19.0
1424-8220
Citations 
PageRank 
References 
4
0.39
0
Authors
4
Name
Order
Citations
PageRank
Philip Schmidt1514.32
Attila Reiss241024.01
Robert Dürichen3184.32
K Van Laerhoven41083185.94