Eye Tracking with Consumer Hardware
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If you have a question about this talk, please contact Phil Cowans.
Present commercial gaze trackers (i.e. from Tobii and LC
Technology) are easy to use, robust and sufficiently
accurate for many screen-based applications but their costs
exceed the budget of most people. Low cost eye tracking has
received an increased attention due to the rapid
developments in tracking hardware (video boards, digital
camera and CPUs). Eye tracking based on consumer hardware
is subject to several unknown factors as various system
parameters (i.e. camera parameters and geometry) are
unknown. Robust statistical principles to accommodate
uncertainties in image data are therefore needed. I will
discuss the components (detection, tracking and gaze
estimation) used in a low-cost eye tracker. I will in
particular describe our contour-based iris tracker. The
contour model is based on the statistics of natural images.
It turns out that through fairly simple modeling that
explicit feature detection can be avoided and thus
thresholds become needless. Based on the data from the eye
tracker I will then discuss current gaze estimation methods
and compare them with gaze estimation methods using
Gaussian Processes.
This talk is part of the Inference Group series.
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