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arXiv · 2010.08278

Real-Time Face & Eye Tracking and Blink Detection using Event Cameras

Cian Ryan·Brian O Sullivan·Amr Elrasad·Joe Lemley·Paul Kielty·Christoph Posch·Etienne Perot
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Abstract

Event cameras contain emerging, neuromorphic vision sensors that capture local light intensity changes at each pixel, generating a stream of asynchronous events. This way of acquiring visual information constitutes a departure from traditional frame based cameras and offers several significant advantages: low energy consumption, high temporal resolution, high dynamic range and low latency. Driver monitoring systems (DMS) are in-cabin safety systems designed to sense and understand a drivers physical and cognitive state. Event cameras are particularly suited to DMS due to their inherent advantages. This paper proposes a novel method to simultaneously detect and track faces and eyes for driver monitoring. A unique, fully convolutional recurrent neural network architecture is presented. To train this network, a synthetic event-based dataset is simulated with accurate bounding box annotations, called Neuromorphic HELEN. Additionally, a method to detect and analyse drivers eye blinks is proposed, exploiting the high temporal resolution of event cameras. Behaviour of blinking provides greater insights into a driver level of fatigue or drowsiness. We show that blinks have a unique temporal signature that can be better captured by event cameras.

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Cian Ryan, Brian O Sullivan, Amr Elrasad, Joe Lemley, Paul Kielty, Christoph Posch, Etienne Perot. 2020-10-16. Real-Time Face & Eye Tracking and Blink Detection using Event Cameras. https://arxiv.org/abs/2010.08278

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