PROBLEM TO BE SOLVED: To provide an estimation device for estimating a concentration degree of a viewer of an image in a TV conference system.SOLUTION: The estimation device includes measurement means for measuring the quantity of oxygenation hemoglobin in a brain blood flow of a person, acquisition means for acquiring line-of-sight information on the person indicating a line-of-sight direction, determination means for dividing a video into blocks and determining a degree of change of an image of each block over a predetermined period, first calculation means for determining a block viewed by the person in a determination period of the predetermined period or longer on the basis of the line-of-sight information, and calculating a gaze score on the basis of the determined degree of change of the block, second calculation means for calculating an activation score on the basis of the quantity of oxygenation hemoglobin of the person in the determination period, and third calculation means for calculating a concentration degree score indicating a concentration degree of the person on the basis of the gaze score and the activation score.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】TV会議システムや映像の視聴者の集中度を推定する推定装置を提供する。【解決手段】推定装置は、前記人の脳血流における酸素化ヘモグロビン量を測定する測定手段と、前記人の視線方向を示す視線情報を取得する取得手段と、前記映像をブロックに分割し、所定期間に渡る各ブロックの画像の変化度合いを判定する判定手段と、前記視線情報に基づき、前記所定期間以上の判定期間において前記人が見ていたブロックを判定し、前記判定したブロックの前記変化度合いに基づき注視スコアを算出する第1算出手段と、前記判定期間における前記人の酸素化ヘモグロビン量に基づき賦活スコアを算出する第2算出手段と、前記注視スコア及び前記賦活スコアに基づき前記人の集中度を示す集中度スコアを算出する第3算出手段と、を備えていることを特徴とする。【選択図】図2
