METHOD OF ACQUIRING GAZE INFORMATION IRRESPECTIVE OF WHETHER USER WEARS VISION AID AND MOVES

摘要

Provided is a gaze tracking apparatus for a user wearing a vision aid, the apparatus including a lighting element unit including a first infrared lighting element and a second infrared lighting element to radiate an infrared light to a user, an image acquirer to acquire an eye image of the user, the eye image including a first corneal reflection light, a second corneal reflection light, a first lens reflection light, and a second lens reflection light, and a processor to turn off the second infrared lighting element when interference occurs between the second lens reflection light and the first corneal reflection light in the acquired eye image, to and to compute a gaze position of the user based on user calibration information, and coordinates of the first corneal reflection light.

主权项

1. A gaze tracking apparatus comprising:
a lighting element unit comprising a first infrared lighting element and a second infrared lighting element to radiate an infrared light to a user; an image acquirer to acquire an eye image of the user, the eye image comprising a first corneal reflection light generated by reflecting, to a pupil of the user, infrared light radiated from the first infrared lighting element, a second corneal reflection light generated by reflecting, to the pupil of the user, infrared light radiated from the second infrared lighting element, a first lens reflection light generated by reflecting, to a vision aid of the user, the infrared light radiated from the first infrared lighting element, and a second lens reflection light generated by reflecting, to the vision aid of the user, the infrared light radiated from the second infrared lighting element; and a processor to eliminate the second lens reflection light when interference occurs between the second lens reflection light and the first corneal reflection light or the second corneal reflection light in the acquired eye image, and to compute a gaze position of the user based on user movement information, user calibration information, and coordinates of the first corneal reflection light.