Controlling illuminators for optimal glints

An eye tracking system comprising:

• one or more processors;
• and
• one or more non-transitory computer-readable media storing instructions that, upon execution by the one or more processors, cause the eye tracking system to perform operations comprising:
• generating a first image and a second image showing at least a portion of a user eye illuminated by a predetermined set of illuminators;
• determining a first position of a glint in the first image and a second position of the glint in the second image, wherein each of the first position and the second position is relative to a pupil edge;
• predicting a third position of the glint relative to the pupil edge based on the first position and the second position;
• determining, from the predetermined set, an illuminator that corresponds to the glint;
• determining, based on the third position, whether to power off the illuminator to generate a third image of at least the portion of the user eye;
• and
• wherein predicting the third position comprises:
• determining a distance between the first position and the second position of the glint;
• and
• generating a circle centered at the third position and having a radius based on the distance, and wherein determining whether to power off the illuminator comprises:
• determining that the circle intersects the pupil edge;
• and
• determining that the illuminator should be powered off based on the circle intersecting the pupil edge.

One or more non-transitory computer-readable media storing instructions that, upon execution by one or more processors, cause an eye tracking system to perform operations comprising:

• generating a first image and a second image showing at least a portion of a user eye illuminated by a predetermined set of illuminators;
• determining a first position of a glint in the first image and a second position of the glint in the second image, wherein each of the first position and the second position is relative to a pupil edge;
• predicting a third position of the glint relative to the pupil edge based on the first position and the second position;
• determining, from the predetermined set, an illuminator that corresponds to the glint;
• determining, based on the third position, whether to power off the illuminator to generate a third image of at least the portion of the user eye;
• and
• wherein predicting the third position comprises:
• determining a distance between the first position and the second position of the glint;
• and
• generating a circle centered at the third position and having a radius based on the distance, and
• wherein determining whether to power off the illuminator comprises:
• determining that the circle intersects the pupil edge;
• and
• determining that the illuminator should be powered off based on the circle intersecting the pupil edge.