Scientific publications
Read about the research that supports the FaceReader Ecosystem
Over the past 20+ years, our facial coding platform and its embedded technologies have been the subject as well as the preferred instrument for numerous accredited scientific studies. Below we present a comprehensive overview of the literature that has emerged from these studies, highlighting and validating the cutting-edge technology of FaceReader Online.
2014
62 citations
Moral violations reduce oral consumption
Chan, van Boven, Andrade, Ariely
Consumers frequently encounter moral violations in everyday life, such as through media portrayals of crime and deception, news reports of corporate fraud, and gossip about unethical behavior. This study investigates how exposure to moral violations influences consumption behavior. Given that moral violations elicit disgust—a signal of contamination that typically reduces oral consumption—the researchers hypothesized that exposure to moral violations would lead to decreased consumption. Across three experiments, participants consumed less water and chocolate milk when: watching a film depicting incest, writing about cheating or theft, and listening to a report on fraud and manipulation. These findings suggest that “moral disgust” affects consumption similarly to core disgust, highlighting the connection between moral violations, emotions, and consumer behavior.
2014
3 citations
Turkish presidential elections trt publicity speech facial expression analysis
H.E. Tasli, P. Ivan
In this paper, the facial expressions of the three Turkish presidential candidates—Demirtas, Erdogan, and Ihsanoglu—are analyzed during their publicity speeches broadcasted on TRT on August 3, 2014. The analysis utilizes FaceReader, which employs active appearance models to achieve 3D facial modeling. Over 500 landmark points are tracked and analyzed to determine the candidates’ facial expressions throughout their speeches. All source videos and the data are publicly available for research purposes.
2014
31 citations
The role of facial microexpression state (FMES) change in the process of conceptual conflic
Chiu, Chou, Wu, Liaw
This study investigates whether changes in facial microexpression states can identify moments of conceptual conflict, a pathway to conceptual change. Involving 102 university and high school students, approximately 80% held misconceptions on the chosen scientific topic. Findings revealed that most students who made erroneous predictions exhibited FMES changes during conceptual conflict. Notably, the absence of FMES change indicated a reduced likelihood of conceptual change, whereas its presence doubled this likelihood. These results suggest that FMES can effectively determine learners’ awareness of conflicting concepts and their progress toward scientific understanding. Educational implications are discussed.
2014
9 citations
Integrating Remote PPG in Facial Expression Analysis Framework
H.E. Tasli, A. Gudi, M. den Uyl
This demonstration paper presents the FaceReader framework, which analyzes human face images and skin color variations to observe facial expressions and vital signs, including average heart rate , heart rate variability , stress levels, and confidence levels. Remote monitoring of facial and vital signs can be beneficial for a wide range of applications. FaceReader utilizes active appearance modeling for facial analysis and novel signal processing techniques for heart rate and variability estimation. The performance has been objectively evaluated, and psychological guidelines for stress measurements are incorporated into the framework for analysis.
2014
16 citations
Emotion and Interface Design
Lockner & Bonnardel
The emotional experience of an interactive system has garnered significant interest in the HCI community. While predicting or controlling these experiences through design choices is challenging, our user study offers a different perspective. We found that certain controllable aspects of interactive products consistently elicited specific emotional responses from participants, despite influences from contextual factors. This paper discusses these findings and their implications for designing emotional experiences in interactive devices.
2014
124 citations
Remote PPG based vital sign measurement using adaptive facial regions
H.E. Tasli, A. Gudi, M. den Uyl
This paper introduces a remote photoplethysmography technique that analyzes human skin color variations to monitor vital signs, such as average heart rate and its variability. Utilizing a non-invasive video camera, the method employs facial appearance modeling to stabilize color variations in selected facial regions during signal acquisition. A novel signal processing approach is presented to extract the periodic components of raw color signals for accurate heart rate estimation. The authors collected a ground truth dataset using a PPG instrument attached to the subject’s skin and demonstrated a strong correlation between the estimated heart rate and the ground truth values.