PROBLEM TO BE SOLVED: To automatically and accurately learn a projection function in a case when attentive action is influenced depending on a speaker.SOLUTION: After acquiring pupil data of a first person and an image in a view field of the first person, a coordinate on a face as the center of a second person who is a speaker in the image located in the view field of the first person is acquired. A projection function for associating the pupil data with a look-at point is obtained by using the face centered coordinate of the second person in the image in the view field of the first person and the pupil data of the first person.SELECTED DRAWING: Figure 1【課題】話者が誰であるかが注視行動に影響を与える場合の射影関数を精度よく自動学習する【解決手段】第一の人物の瞳孔データを取得し、第一の人物の視野の画像を取得し、第一の人物の視野の画像における話者である第二の人物の顔中心座標を取得し、第一の人物の視野の画像における第二の人物の顔中心座標と第一の人物の瞳孔データとを用いて、瞳孔データと注視点とを関連付ける射影関数を求める。【選択図】図1