PROBLEM TO BE SOLVED: To provide a mechanism capable of accurately detecting a visual cell of a subject's eye.SOLUTION: A picture processing device comprises: a picture acquisition unit 110 that acquires a picture obtained by imaging a visual cell of a subject's eye； a division unit 142 that divides the picture acquired by the picture acquisition unit 110 into small areas； a feature amount acquisition unit 143 that performs space frequency conversion on each of the small areas obtained by the division unit 142's division to acquire a feature amount of each small area； and an area extraction unit 144 that, on the basis of the feature amount of each small area acquired by the feature amount acquisition unit 143, extracts a non-resolution area, i.e., an area in which a visual cell has not yet been resolved, in the picture acquired by the picture acquisition unit 110.SELECTED DRAWING: Figure 1【課題】被検眼の視細胞の検出を正確に行える仕組みを提供する。【解決手段】被検眼の視細胞を撮影した画像を取得する画像取得部１１０と、画像取得部１１０で取得された画像を小領域に分割する分割部１４２と、分割部１４２で分割された各小領域を空間周波数変換し、各小領域の特徴量を取得する特徴量取得部１４３と、特徴量取得部１４３で取得された各小領域の特徴量に基づいて、画像取得部１１０で取得された画像において視細胞が未解像の領域である未解像領域を抽出する領域抽出部１４４を備える。【選択図】図１
