VISUAL LINE DIRECTION ESTIMATING DEVICE, VISUAL LINE DIRECTION ESTIMATING METHOD, AND VISUAL LINE DIRECTION ESTIMATING PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a visual line direction estimating device capable of enhancing estimation accuracy of an eyeball center position, in a method for estimating a visual line direction as a direction connecting an eyeball center and an iris (pupil).SOLUTION: A visual line direction estimating device obtains a moving image including a human head area in an observation area and multiple basic feature points are preliminarily specified in the head area. A feature point extracting unit 5610 extracts feature points including the basic feature points in each image frame of the captured moving image. An eyeball center position estimating unit 5640 estimates an eyeball center position in the current image frame on the basis of: the basic feature points extracted in the moving images up to the image frame at the time point subject to processing of estimating a visual line direction; and an additional feature point extracted additionally. A visual line direction estimating unit 5660 estimates a visual line direction of a person to be estimated, on the basis of the eyeball center position and an iris center position.