In eye-tracking data analysis, researchers analyze where subjects’ attention is directed from temporal gaze position data. This study proposes a new visualization tool called “Gaze Tiling” that combines three different timelines. Traditional visualization methods made it difficult to understand changes in gaze position transitioning over video, but our approach solves this problem by using three timelines with different characteristics.
Gaze Tiling consists of the following three timelines:
- Context Timeline
- Visualizes spatio-temporal changes in video using the TimeSpaceSlice method
- Focus Timeline
- Displays images around gaze positions in a tiled arrangement
- Color-coded Gaze Plot
- Visualizes gaze position coordinates using a 2D color map
The Focus Timeline shows temporal changes in what subjects are looking at. The Context Timeline uses the TimeSpaceSlice method to visualize rapid video changes that are not displayed in typical thumbnails.
Application Examples
In experiments using mahjong games, clear differences were observed between the gaze patterns of beginners and advanced players.
Advanced players can be seen to observe not only their own hand tiles but also opponents’ discarded tiles and the overall game situation.