Title
Deep semantic gaze embedding and scanpath comparison for expertise classification during OPT viewing
Abstract
Modeling eye movement indicative of expertise behavior is decisive in user evaluation. However, it is indisputable that task semantics affect gaze behavior. We present a novel approach to gaze scanpath comparison that incorporates convolutional neural networks (CNN) to process scene information at the fixation level. Image patches linked to respective fixations are used as input for a CNN and the resulting feature vectors provide the temporal and spatial gaze information necessary for scanpath similarity comparison. We evaluated our proposed approach on gaze data from expert and novice dentists interpreting dental radiographs using a local alignment similarity score. Our approach was capable of distinguishing experts from novices with 93% accuracy while incorporating the image semantics. Moreover, our scanpath comparison using image patch features has the potential to incorporate task semantics from a variety of tasks.
Year
DOI
Venue
2020
10.1145/3379155.3391320
ETRA '20: 2020 Symposium on Eye Tracking Research and Applications Stuttgart Germany June, 2020
DocType
ISBN
Citations 
Conference
978-1-4503-7133-9
0
PageRank 
References 
Authors
0.34
0
8
Name
Order
Citations
PageRank
Castner Nora100.34
Thomas C. Kübler212412.57
Katharina Scheiter323130.32
Richter Juilane400.34
Eder Thérése500.34
Hüttig Fabian600.34
Keutel Constanze700.34
Enkelejda Kasneci820233.86