Adaptive algorithm for power efficient eye tracking

An apparatus for eye tracking, comprising:

• at least one memory;
• and
• at least one processor coupled to the at least one memory and configured to:
• obtain an image of an eye, the image of the eye including a glint of light from a light source;
• determine information associated with the glint of light based on the image of the eye;
• obtain one or more target glint parameter values;
• compare the information associated with the glint of light to the one or more target glint parameter values;
• and
• adjust an amount of power for the light source based on comparing the information associated with the glint of light and the one or more target glint parameter values.

A non-transitory computer-readable medium having stored thereon instructions that, when executed by at least one processor, cause the at least one processor to:

• obtain an image of an eye, the image of the eye including a glint of light from a light source;
• determine information associated with the glint of light based on the image of the eye;
• obtain one or more target glint parameter values;
• compare the information associated with the glint of light to the one or more target glint parameter values;
• and
• adjust an amount of power for the light source based on comparing the information associated with the glint of light and the one or more target glint parameter values.

An apparatus for eye tracking, comprising:

• means for obtaining an image of an eye, the image of the eye including a glint of light from a light source;
• means for determining information associated with the glint of light based on the image of the eye;
• means for obtaining one or more target glint parameter values;
• means for comparing the information associated with the glint of light to the one or more target glint parameter values;
• and
• means for adjusting an amount of power for the light source based on comparing the information associated with the glint of light and the one or more target glint parameter values.