ETRA 2019


Author(s): Pupil Dev Team

June 24, 2019

We will be exhibiting Pupil Labs products and presenting research and at the ACM Symposium on Eye Tracking Research & Applications (ETRA) in Denver, Colorado from June 25-28, 2019.

We are proud to be sponsoring ETRA again this year, and are looking forward to listening to talks, participating in workshops, and learning from the community!


We will be exhibiting throughout the duration of the symposium. This will be the first time that we will be demoing Pupil Invisible publicly, so make sure to stop by the sponsor area to get a hands-on demo!


Pupil Labs R&D Lead, Kai Dierkes, will be presenting his paper A fast approach to refraction-aware 3D eye-model fitting and gaze prediction at ETRA on Thursday, June 27 15:30-17:30 (Oxford / Pike's Peak / Humboldt)


By temporally integrating information about pupil contours extracted from eye images, model-based methods for glint-free gaze estimation can mitigate pupil detection noise. However, current approaches require time-consuming iterative solving of a nonlinear minimization problem to estimate key parameters, such as eyeball position. Based on the method presented by [Swirski and Dodgson 2013], we propose a novel approach to glint-free 3D eye-model fitting and gaze prediction using a single near-eye camera. By recasting model optimization as a least-squares intersection of lines, we make it amenable to a fast non-iterative solution. We further present a method for estimating deterministic refraction-correction functions from synthetic eye images and validate them on both synthetic and real eye images. We demonstrate the robustness of our method in the presence of pupil detection noise and show the benefit of temporal integration of pupil contour information on eyeball position and gaze estimation accuracy.