Gaze detection apparatus

A gaze detection apparatus comprising at least one memory and at least one processor which function as:

• a gaze detection unit configured to detect, based on an eye image in which an eye of a user is imaged, a gaze position which is a position at which the user looks;
• and
• a calibration unit configured to acquire a correction value for reducing a detection error of the gaze position by a predetermined calibration operation, wherein
• after the predetermined calibration operation is performed in a state in which a head of the user has a first orientation, a gaze position which is detected in a state in which the head of the user has the first orientation and the user looks at a predetermined position and a gaze position which is detected in a state in which the head of the user has a second orientation different from the first orientation and the user looks at the predetermined position substantially match each other.

A control method of a gaze detection apparatus, comprising:

• detecting, based on an eye image in which an eye of a user is imaged, a gaze position which is a position at which the user looks;
• detecting a head orientation which is an orientation of a head of the user, based on the eye image;
• acquiring a first correction value for reducing a detection error of the gaze position by a predetermined calibration operation;
• and
• correcting the first correction value, based on gaze information related to a current gaze position, a head orientation during the predetermined calibration operation, and a current head orientation.

A non-transitory computer readable medium that stores a program, wherein the program causes a computer to execute a control method of a gaze detection apparatus, the control method comprising:

• detecting, based on an eye image in which an eye of a user is imaged, a gaze position which is a position at which the user looks;
• detecting a head orientation which is an orientation of a head of the user, based on the eye image;
• acquiring a first correction value for reducing a detection error of the gaze position by a predetermined calibration operation;
• and
• correcting the first correction value, based on gaze information related to a current gaze position, a head orientation during the predetermined calibration operation, and a current head orientation.