Determining user intent based on attention values

A method on a computing device, the method comprising:

• receiving, via an eye-tracking sensor, eye tracking samples each corresponding to a gaze direction of a user,
• based at least on the eye tracking samples, determining a time-dependent attention value for a location in a field of view of the see-through display,
• based at least on the time-dependent attention value for the location, determining an intent of the user to interact with a user interface associated with the location that is at least partially hidden from a current view, and
• in response to determining the intent, displaying via the see-through display the user interface.

A head-mounted display device comprising:

• a see-through display;
• a head-tracking system comprising sensors configured to track a position and orientation of a head;
• an eye-tracking system comprising an eye tracking sensor;
• a logic subsystem;
• and
• a storage subsystem holding instructions executable by the logic subsystem to:
• receive, via the head-tracking system, head tracking data,
• receive, via the eye-tracking sensor, eye tracking samples each corresponding to a gaze direction of a user,
• position a user interface at a location outside of a field view of the see-through display,
• determine, based on the head tracking data, a change in the field of view of the see-through display that corresponds to a head tilt toward the user interface that
• meets a threshold, and in response reveal at least a portion of the user interface,
• based at least on the eye tracking samples, determine a time-dependent attention value for the user interface,
• based at least on the time-dependent attention value for the user interface, determine an intent of the user to interact with the user interface, and
• in response to determining the intent, perform an action associated with the user interface.