A Lightweight Spatiotemporal Network for Online Eye Tracking with Event Camera

• URL: http://arxiv.org/abs/2404.08858v1
• Date: Sat, 13 Apr 2024 00:13:20 GMT
• Title: A Lightweight Spatiotemporal Network for Online Eye Tracking with Event Camera
• Authors: Yan Ru Pei, Sasskia Brüers, Sébastien Crouzet, Douglas McLelland, Olivier Coenen,
• Abstract summary: Event-based data are commonly encountered in edge computing environments where efficiency and low latency are critical. To interface with such data and leverage their rich temporal temporal, we propose a causal convolutional network. We apply our model on the AIS 2024 event-based eye tracking challenge, reaching a score of 0.9916 p10 accuracy on the Kaggle private testset.
• Score: 0.8576354642891824
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Event-based data are commonly encountered in edge computing environments where efficiency and low latency are critical. To interface with such data and leverage their rich temporal features, we propose a causal spatiotemporal convolutional network. This solution targets efficient implementation on edge-appropriate hardware with limited resources in three ways: 1) deliberately targets a simple architecture and set of operations (convolutions, ReLU activations) 2) can be configured to perform online inference efficiently via buffering of layer outputs 3) can achieve more than 90% activation sparsity through regularization during training, enabling very significant efficiency gains on event-based processors. In addition, we propose a general affine augmentation strategy acting directly on the events, which alleviates the problem of dataset scarcity for event-based systems. We apply our model on the AIS 2024 event-based eye tracking challenge, reaching a score of 0.9916 p10 accuracy on the Kaggle private testset.

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