Adaptive camera and illuminator eyetracker
AssigneeTobii AB
InventorsPeter Blixt, Gunnar Troili, Anders Kingbäck, John Mikael Elvesjö, Mårten Skogö
Life of this patent
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Abstract
A method includes obtaining an image of an eye in a bright-pupil imaging mode in which a retinal retro-reflection complements the image of the eye in the bright-pupil mode, and obtaining an image of the eye in a dark-pupil imaging mode in which a corneo-scleral retro-reflection complements the image of the eye in the dark-pupil mode. One of the bright-pupil imaging mode and the dark-pupil imaging mode is selected based on quality of obtained images.
Claims20
A system for determining a gaze direction of at least one eye of a user, wherein the system comprises:
- a plurality of image sensors;
- a plurality of illuminators;
- and
- a processor configured to:
- determine whether to operate the system in a first mode or a second mode;
- select, based on whether the system is operated in the first mode or the second mode, a particular image sensor from the plurality of image sensors;
- select, based on whether the system is operated in the first mode or the second mode, and the particular image sensor selected, a particular illuminator from the plurality of illuminators;
- activate the particular image sensor and the particular illuminator;
- and
- determine a gaze direction of at least one eye of a user based at least in part on an image captured by the particular image sensor of light from the particular illuminator reflecting from the at least one eye of the user.
A non-transitory machine readable medium having instructions stored thereon for determining a gaze direction of at least one eye of a user, wherein the instructions are executable by one or more processors to at least:
- determine whether to operate an eye tracking system in a first mode or a second mode;
- select, based on whether the eye tracking system is operated in the first mode or the second mode, a particular image sensor from a plurality of image sensors;
- select, based on whether the eye tracking system is operated in the first mode or the second mode, and the particular image sensor selected, a particular illuminator from a plurality of illuminators;
- and
- activate the particular image sensor and the particular illuminator.
A method for determining a gaze direction of at least one eye of a user, wherein the method comprises:
- determining whether to operate an eye tracking system in a first mode or a second mode;
- selecting, based on whether the eye tracking system is operated in the first mode or the second mode, a particular image sensor from a plurality of image sensors;
- and
- selecting, based on whether the eye tracking system is operated in the first mode or the second mode, and the particular image sensor selected, a particular illuminator from a plurality of illuminators.
Dependencies are inferred from the claim text.