DGaze: CNN-Based Gaze Prediction in Dynamic Scenes

Gaze Analysis and Prediction in Dynamic Virtual Scenes

Zhiming Hu, Sheng Li, Congyi Zhang, Kangrui Yi, Guoping Wang, and Dinesh Manocha

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Abstract

We conduct novel analyses of users' gaze behaviors in dynamic virtual scenes and, based on our analyses, we present a novel CNN-based model called DGaze for gaze prediction in HMD-based applications. We first collect 43 users' eye tracking data in 5 dynamic scenes under free-viewing conditions. Next, we perform statistical analysis of our data and observe that dynamic object positions, head rotation velocities, and salient regions are correlated with users' gaze positions. Based on our analysis, we present a CNN-based model (DGaze) that combines object position sequence, head velocity sequence, and saliency features to predict users' gaze positions. Our model can be applied to predict not only realtime gaze positions but also gaze positions in the near future and can achieve better performance than prior method. In terms of realtime prediction, DGaze achieves a 22.0% improvement over prior method in dynamic scenes and obtains an improvement of 9.5% in static scenes, based on using the angular distance as the evaluation metric. We also propose a variant of our model called DGaze_ET that can be used to predict future gaze positions with higher precision by combining accurate past gaze data gathered using an eye tracker. We further analyze our CNN architecture and verify the effectiveness of each component in our model. We apply DGaze to gaze-contingent rendering and a game, and also present the evaluation results from a user study.

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Related work


Our related work on gaze analysis and prediction in virtual reality:

Gaze Analysis and Prediction in Virtual Reality

Temporal Continuity of Visual Attention for Future Gaze Prediction in Immersive Virtual Reality

SGaze: A Data-Driven Eye-Head Coordination Model for Realtime Gaze Prediction

Bibtex


@article{Hu_TVCG_DGaze, author = {Zhiming Hu and Sheng Li and Congyi Zhang and Kangrui Yi and Guoping Wang and Dinesh Manocha}, title = {DGaze: CNN-Based Gaze Prediction in Dynamic Scenes}, journal = {IEEE Transactions on Visualization and Computer Graphics}, year = {2020} }